style: apply cargo fmt across the crate (A20)

The repo never enforced rustfmt, so formatting had drifted broadly. This is a
single mechanical `cargo fmt` pass over the whole crate (no behavioral change;
lib suite green, 493 passed). Going forward fmt should be enforced (planned CI
fmt --check step). Part of the 0.6.1 hygiene pass.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/audio/cpal_impl.rs

@@ -578,7 +578,9 @@ fn choose_config(device: &Device, output: bool) -> Result<cpal::SupportedStreamC
     let pick = |channels: Option<u16>| {
         ranges
             .iter()
-            .find(|r| usable_range(r) && supports_48k(r) && channels.is_none_or(|c| r.channels() == c))
+            .find(|r| {
+                usable_range(r) && supports_48k(r) && channels.is_none_or(|c| r.channels() == c)
+            })
             .cloned()
     };
 
@@ -666,15 +668,30 @@ fn run_capture(
         let device_rate = config.sample_rate.0;
         let stream = match sample_format {
             SampleFormat::F32 => build_input::<f32, _>(
-                &device, &config, producer, channels, overrun.clone(), callbacks.clone(),
+                &device,
+                &config,
+                producer,
+                channels,
+                overrun.clone(),
+                callbacks.clone(),
                 err_code.clone(),
             ),
             SampleFormat::I16 => build_input::<i16, _>(
-                &device, &config, producer, channels, overrun.clone(), callbacks.clone(),
+                &device,
+                &config,
+                producer,
+                channels,
+                overrun.clone(),
+                callbacks.clone(),
                 err_code.clone(),
             ),
             SampleFormat::U16 => build_input::<u16, _>(
-                &device, &config, producer, channels, overrun.clone(), callbacks.clone(),
+                &device,
+                &config,
+                producer,
+                channels,
+                overrun.clone(),
+                callbacks.clone(),
                 err_code.clone(),
             ),
             other => Err(AudioError::Stream(format!(
@@ -764,7 +781,10 @@ fn run_capture(
         // Surface a stream error the RT callback flagged (it can't log itself).
         let ec = err_code.load(Ordering::Relaxed);
         if ec != STREAM_ERR_NONE && ec != last_err {
-            crate::log_msg(&format!("cpal capture stream error: {}", stream_err_text(ec)));
+            crate::log_msg(&format!(
+                "cpal capture stream error: {}",
+                stream_err_text(ec)
+            ));
             last_err = ec;
         }
         if !drained {
@@ -914,16 +934,34 @@ fn run_playback(
         let device_rate = config.sample_rate.0;
         let stream = match sample_format {
             SampleFormat::F32 => build_output::<f32, _>(
-                &device, &config, consumer, ring_fill.clone(), underrun.clone(),
-                max_cb.clone(), callbacks.clone(), err_code.clone(),
+                &device,
+                &config,
+                consumer,
+                ring_fill.clone(),
+                underrun.clone(),
+                max_cb.clone(),
+                callbacks.clone(),
+                err_code.clone(),
             ),
             SampleFormat::I16 => build_output::<i16, _>(
-                &device, &config, consumer, ring_fill.clone(), underrun.clone(),
-                max_cb.clone(), callbacks.clone(), err_code.clone(),
+                &device,
+                &config,
+                consumer,
+                ring_fill.clone(),
+                underrun.clone(),
+                max_cb.clone(),
+                callbacks.clone(),
+                err_code.clone(),
             ),
             SampleFormat::U16 => build_output::<u16, _>(
-                &device, &config, consumer, ring_fill.clone(), underrun.clone(),
-                max_cb.clone(), callbacks.clone(), err_code.clone(),
+                &device,
+                &config,
+                consumer,
+                ring_fill.clone(),
+                underrun.clone(),
+                max_cb.clone(),
+                callbacks.clone(),
+                err_code.clone(),
             ),
             other => Err(AudioError::Stream(format!(
                 "unsupported playback sample format: {other:?}"
@@ -1199,7 +1237,10 @@ fn spawn_health_logger(
             // Surface a stream error the RT callback flagged (it can't log itself).
             let ec = err_code.load(Ordering::Relaxed);
             if ec != STREAM_ERR_NONE && ec != last_err {
-                crate::log_msg(&format!("cpal playback stream error: {}", stream_err_text(ec)));
+                crate::log_msg(&format!(
+                    "cpal playback stream error: {}",
+                    stream_err_text(ec)
+                ));
                 last_err = ec;
             }
             // Report the device's per-cycle demand (in internal 48 kHz-stereo

src/audio/echo_cancel.rs

@@ -54,7 +54,10 @@ impl Drop for EchoCancelGuard {
             .arg("unload-module")
             .arg(&self.module_index)
             .output();
-        crate::log_msg(&format!("Echo cancel: unloaded module {}", self.module_index));
+        crate::log_msg(&format!(
+            "Echo cancel: unloaded module {}",
+            self.module_index
+        ));
     }
 }
 
@@ -65,7 +68,10 @@ impl Drop for EchoCancelGuard {
 /// `None` (or an empty string) to bind to the system defaults. Returns `Err` with
 /// a human-readable reason if `pactl` is missing, the load fails, or the nodes
 /// don't appear — the caller should fall back to the direct devices.
-pub fn enable(real_source: Option<&str>, real_sink: Option<&str>) -> Result<EchoCancelGuard, String> {
+pub fn enable(
+    real_source: Option<&str>,
+    real_sink: Option<&str>,
+) -> Result<EchoCancelGuard, String> {
     // Best-effort: clear any stale instance left by a crashed prior run so we
     // don't stack duplicate modules / fight over the virtual node names.
     unload_stale();
@@ -101,7 +107,11 @@ pub fn enable(real_source: Option<&str>, real_sink: Option<&str>) -> Result<Echo
     if module_index.parse::<u64>().is_err() {
         return Err(format!("unexpected pactl output: {module_index:?}"));
     }
-    let guard = EchoCancelGuard { module_index, source_name, sink_name };
+    let guard = EchoCancelGuard {
+        module_index,
+        source_name,
+        sink_name,
+    };
 
     // The virtual nodes appear shortly after the module loads; wait for both so
     // the subsequent capture/playback streams can actually target them. If they
@@ -134,7 +144,12 @@ fn wait_for_nodes(source_name: &str, sink_name: &str) -> bool {
 /// Whether `pactl list <kind> short` lists a node named `name`.
 /// `kind` is "sources" or "sinks".
 fn node_present(kind: &str, name: &str) -> bool {
-    let Ok(out) = Command::new("pactl").arg("list").arg(kind).arg("short").output() else {
+    let Ok(out) = Command::new("pactl")
+        .arg("list")
+        .arg(kind)
+        .arg("short")
+        .output()
+    else {
         return false;
     };
     String::from_utf8_lossy(&out.stdout)
@@ -167,7 +182,12 @@ fn process_is_alive(_pid: u32) -> bool {
 /// Unloads leftover PeerSpeak `module-echo-cancel` instances only when their
 /// owning process is gone. Best-effort and conservative on non-Linux platforms.
 fn unload_stale() {
-    let Ok(out) = Command::new("pactl").arg("list").arg("modules").arg("short").output() else {
+    let Ok(out) = Command::new("pactl")
+        .arg("list")
+        .arg("modules")
+        .arg("short")
+        .output()
+    else {
         return;
     };
     for line in String::from_utf8_lossy(&out.stdout).lines() {
@@ -179,7 +199,10 @@ fn unload_stale() {
             && ec_module_is_stale(args, process_is_alive)
             && index.parse::<u64>().is_ok()
         {
-            let _ = Command::new("pactl").arg("unload-module").arg(index).output();
+            let _ = Command::new("pactl")
+                .arg("unload-module")
+                .arg(index)
+                .output();
             crate::log_msg(&format!("Echo cancel: cleaned up stale module {index}"));
         }
     }
@@ -198,13 +221,25 @@ mod tests {
         let guard = enable(None, None).expect("module-echo-cancel should load");
         let source_name = guard.source_name().to_string();
         let sink_name = guard.sink_name().to_string();
-        assert!(node_present("sources", &source_name), "cleaned source must exist");
-        assert!(node_present("sinks", &sink_name), "reference sink must exist");
+        assert!(
+            node_present("sources", &source_name),
+            "cleaned source must exist"
+        );
+        assert!(
+            node_present("sinks", &sink_name),
+            "reference sink must exist"
+        );
         drop(guard);
         // Give pactl a moment to tear the nodes down.
         std::thread::sleep(Duration::from_millis(300));
-        assert!(!node_present("sources", &source_name), "source must be gone after unload");
-        assert!(!node_present("sinks", &sink_name), "sink must be gone after unload");
+        assert!(
+            !node_present("sources", &source_name),
+            "source must be gone after unload"
+        );
+        assert!(
+            !node_present("sinks", &sink_name),
+            "sink must be gone after unload"
+        );
     }
 
     #[test]
@@ -220,7 +255,10 @@ mod tests {
             pid_from_ec_args("source_name=peerspeak_echocancel_source.not-a-pid"),
             None
         );
-        assert_eq!(pid_from_ec_args("source_name=someone_elses_source.4242"), None);
+        assert_eq!(
+            pid_from_ec_args("source_name=someone_elses_source.4242"),
+            None
+        );
     }
 
     #[test]

src/audio/eq.rs

@@ -251,7 +251,10 @@ mod tests {
         let before = rms(&low);
         eq.process_frame(&mut low);
         let after = rms(&low);
-        assert!(after > before * 1.6, "low shelf should boost low RMS: {before} -> {after}");
+        assert!(
+            after > before * 1.6,
+            "low shelf should boost low RMS: {before} -> {after}"
+        );
     }
 
     #[test]
@@ -264,7 +267,10 @@ mod tests {
         let before = rms(&high);
         eq.process_frame(&mut high);
         let after = rms(&high);
-        assert!(after > before * 1.6, "high shelf should boost high RMS: {before} -> {after}");
+        assert!(
+            after > before * 1.6,
+            "high shelf should boost high RMS: {before} -> {after}"
+        );
     }
 
     #[test]
@@ -275,7 +281,10 @@ mod tests {
                 Biquad::peaking(DEFAULT_SAMPLE_RATE, MID_PEAK_HZ, gain, MID_Q),
                 Biquad::high_shelf(DEFAULT_SAMPLE_RATE, HIGH_SHELF_HZ, gain, SHELF_Q),
             ] {
-                assert!(b.coeffs.all_finite(), "coefficients must be finite at {gain} dB");
+                assert!(
+                    b.coeffs.all_finite(),
+                    "coefficients must be finite at {gain} dB"
+                );
             }
         }
     }
@@ -289,12 +298,11 @@ mod tests {
         });
         let mut frame = sine(1_000.0, 48_000, 30_000.0);
         eq.process_frame(&mut frame);
-        let peak = frame
-            .iter()
-            .map(|&s| i32::from(s).abs())
-            .max()
-            .unwrap_or(0);
-        assert!(peak > 1_000, "processed signal should retain audible energy");
+        let peak = frame.iter().map(|&s| i32::from(s).abs()).max().unwrap_or(0);
+        assert!(
+            peak > 1_000,
+            "processed signal should retain audible energy"
+        );
         assert!(
             frame.iter().any(|&s| s > 0) && frame.iter().any(|&s| s < 0),
             "a boosted sine should retain both polarities"

src/audio/gate.rs

@@ -169,7 +169,10 @@ mod tests {
             assert!(g.process(&mut f, 0.05), "loud frame must transmit");
             last = peak(&f);
         }
-        assert!(last >= 9900, "gain should reach ~1.0 on sustained loud input, got peak {last}");
+        assert!(
+            last >= 9900,
+            "gain should reach ~1.0 on sustained loud input, got peak {last}"
+        );
     }
 
     #[test]
@@ -179,8 +182,15 @@ mod tests {
         g.process(&mut f, 0.05);
         // 5ms attack @48k = 240 samples; across a 960-sample frame the gain ramps
         // 0->1, so the early samples are well below full scale (no instant click).
-        assert!(f[0].abs() < 5000, "attack should start near zero, got {}", f[0]);
-        assert!(f[FRAME - 1].abs() > 9000, "attack should complete within the frame");
+        assert!(
+            f[0].abs() < 5000,
+            "attack should start near zero, got {}",
+            f[0]
+        );
+        assert!(
+            f[FRAME - 1].abs() > 9000,
+            "attack should complete within the frame"
+        );
     }
 
     #[test]
@@ -193,8 +203,14 @@ mod tests {
         }
         // First quiet frame right after speech: hold keeps it open (not chopped).
         let mut q = frame(50); // rms ~0.0015, below close (0.03)
-        assert!(g.process(&mut q, 0.05), "first quiet frame must stay open (hangover)");
-        assert!(peak(&q) > 0, "held-open frame must not be silenced immediately");
+        assert!(
+            g.process(&mut q, 0.05),
+            "first quiet frame must stay open (hangover)"
+        );
+        assert!(
+            peak(&q) > 0,
+            "held-open frame must not be silenced immediately"
+        );
 
         // Hold is 200ms = 10 frames; keep feeding quiet until it fully closes.
         let mut closed = false;
@@ -205,7 +221,10 @@ mod tests {
                 break;
             }
         }
-        assert!(closed, "gate must eventually close and stop transmitting after sustained silence");
+        assert!(
+            closed,
+            "gate must eventually close and stop transmitting after sustained silence"
+        );
     }
 
     #[test]
@@ -216,8 +235,14 @@ mod tests {
         g.process(&mut f, 0.05); // open=0.05, close=0.03
         // A frame between close and open thresholds: rms ~0.04 (amp ~1310).
         let mut mid = frame(1310);
-        assert!(g.process(&mut mid, 0.05), "between-threshold frame must keep an open gate open");
-        assert!(g.open, "hysteresis: gate stays open above the close threshold");
+        assert!(
+            g.process(&mut mid, 0.05),
+            "between-threshold frame must keep an open gate open"
+        );
+        assert!(
+            g.open,
+            "hysteresis: gate stays open above the close threshold"
+        );
     }
 
     #[test]
@@ -225,7 +250,10 @@ mod tests {
         let mut g = NoiseGate::new(SR);
         // Never opened; feed silence — should report don't-transmit promptly.
         let mut f = frame(0);
-        assert!(!g.process(&mut f, 0.05), "an unopened gate on silence must not transmit");
+        assert!(
+            !g.process(&mut f, 0.05),
+            "an unopened gate on silence must not transmit"
+        );
     }
 
     #[test]
@@ -266,7 +294,11 @@ mod tests {
 
         let mut f2 = frame(10000);
         assert!(g.process(&mut f2, 0.05)); // enabled
-        assert!(f2[0].abs() > 9000, "expected first sample of enabled frame to have no fade-in, got {}", f2[0]);
+        assert!(
+            f2[0].abs() > 9000,
+            "expected first sample of enabled frame to have no fade-in, got {}",
+            f2[0]
+        );
     }
 
     #[test]
@@ -302,7 +334,10 @@ mod tests {
             let mut f = frame(1310);
             assert!(g.process(&mut f, 0.05));
         }
-        assert!(g.open, "gate must stay open (hold refreshed by mid-level input)");
+        assert!(
+            g.open,
+            "gate must stay open (hold refreshed by mid-level input)"
+        );
     }
 
     #[test]
@@ -333,6 +368,10 @@ mod tests {
             last_peak = peak(&f);
         }
         assert!(g.open);
-        assert!(last_peak >= 9900, "peak of the 3rd reopened frame must be >= 9900, got {}", last_peak);
+        assert!(
+            last_peak >= 9900,
+            "peak of the 3rd reopened frame must be >= 9900, got {}",
+            last_peak
+        );
     }
 }

src/audio/limiter.rs

@@ -123,7 +123,10 @@ mod tests {
         let out = lim.process(&loud, 1.0);
         let ceiling = lim.ceiling().ceil() as i16;
         for &s in &out {
-            assert!(s > 0, "positive loud input stays positive (no wrap), got {s}");
+            assert!(
+                s > 0,
+                "positive loud input stays positive (no wrap), got {s}"
+            );
             assert!(s <= ceiling, "sample {s} exceeded ceiling {ceiling}");
         }
     }
@@ -175,7 +178,10 @@ mod tests {
         let out_pos = lim.process(&pos_loud, 1.0);
         for &s in &out_pos {
             assert!(s > 0, "positive input stays positive, got {s}");
-            assert!(s <= ceiling_ceil, "positive sample {s} exceeded ceiling {ceiling_ceil}");
+            assert!(
+                s <= ceiling_ceil,
+                "positive sample {s} exceeded ceiling {ceiling_ceil}"
+            );
         }
 
         // Sustained negative loud sum
@@ -185,7 +191,10 @@ mod tests {
         let neg_ceiling = -ceiling_ceil;
         for &s in &out_neg {
             assert!(s < 0, "negative input stays negative, got {s}");
-            assert!(s >= neg_ceiling, "negative sample {s} exceeded negative ceiling {neg_ceiling}");
+            assert!(
+                s >= neg_ceiling,
+                "negative sample {s} exceeded negative ceiling {neg_ceiling}"
+            );
         }
     }
 
@@ -200,8 +209,14 @@ mod tests {
         let out = lim.process(&input, 8.0);
         for &s in &out {
             assert!(s > 0, "positive stays positive");
-            assert!(s <= ceiling_ceil, "sample {s} must be limited to ceiling {ceiling_ceil}");
-            assert!((s - ceiling_ceil).abs() <= 2, "sample {s} should ride the ceiling {ceiling_ceil}");
+            assert!(
+                s <= ceiling_ceil,
+                "sample {s} must be limited to ceiling {ceiling_ceil}"
+            );
+            assert!(
+                (s - ceiling_ceil).abs() <= 2,
+                "sample {s} should ride the ceiling {ceiling_ceil}"
+            );
         }
     }
 
@@ -213,7 +228,10 @@ mod tests {
         let out = lim.process(&input, 0.5);
         for (i, &s) in out.iter().enumerate() {
             let expected = (input[i] as f32 * 0.5).round() as i16;
-            assert!((s - expected).abs() <= 1, "sample {s} should be close to expected {expected}");
+            assert!(
+                (s - expected).abs() <= 1,
+                "sample {s} should be close to expected {expected}"
+            );
         }
 
         // Subsequently feed a new sample at unity gain. It must be transparent,
@@ -230,7 +248,12 @@ mod tests {
 
         let loud = vec![200_000i32; 10];
         let out = lim.process(&loud, 1.0);
-        assert!(out[0] <= ceiling_ceil, "first sample {} must not overshoot ceiling {}", out[0], ceiling_ceil);
+        assert!(
+            out[0] <= ceiling_ceil,
+            "first sample {} must not overshoot ceiling {}",
+            out[0],
+            ceiling_ceil
+        );
     }
 
     /// 5. Release direction & monotonicity.
@@ -247,13 +270,23 @@ mod tests {
 
         // Output should be monotonic (non-decreasing)
         for i in 1..out.len() {
-            assert!(out[i] >= out[i - 1], "output must be monotonic; index {} was {}, index {} was {}", i - 1, out[i - 1], i, out[i]);
+            assert!(
+                out[i] >= out[i - 1],
+                "output must be monotonic; index {} was {}, index {} was {}",
+                i - 1,
+                out[i - 1],
+                i,
+                out[i]
+            );
         }
 
         // The end sample should be closer to the original input than the start sample
         let start_diff = (mid_val as i16 - out[0]).abs();
         let end_diff = (mid_val as i16 - *out.last().unwrap()).abs();
-        assert!(end_diff < start_diff, "end diff {end_diff} should be smaller than start diff {start_diff}");
+        assert!(
+            end_diff < start_diff,
+            "end diff {end_diff} should be smaller than start diff {start_diff}"
+        );
     }
 
     /// 6. Release is gradual, not instantaneous.
@@ -265,7 +298,11 @@ mod tests {
 
         // Immediately follow with a sub-ceiling sample
         let out = lim.process(&[10_000i32], 1.0);
-        assert!(out[0] < 10_000, "first quiet sample should still be attenuated (got {})", out[0]);
+        assert!(
+            out[0] < 10_000,
+            "first quiet sample should still be attenuated (got {})",
+            out[0]
+        );
     }
 
     /// 7. State carries across process calls.
@@ -287,7 +324,10 @@ mod tests {
         let mut out_split = out_split1;
         out_split.extend(&out_split2);
 
-        assert_eq!(out_single, out_split, "splitting process calls must produce identical output to a single call");
+        assert_eq!(
+            out_single, out_split,
+            "splitting process calls must produce identical output to a single call"
+        );
 
         // Test 2: Pre-loaded limiter vs fresh limiter on the same input
         let mut lim_preloaded = SoftLimiter::new(SR);
@@ -299,8 +339,16 @@ mod tests {
         let out_preloaded = lim_preloaded.process(&test_input, 1.0);
         let out_fresh = lim_fresh.process(&test_input, 1.0);
 
-        assert_ne!(out_preloaded, out_fresh, "pre-loaded and fresh limiter outputs should differ");
-        assert!(out_preloaded[0] < out_fresh[0], "pre-loaded limiter first sample {} should be smaller than fresh limiter first sample {}", out_preloaded[0], out_fresh[0]);
+        assert_ne!(
+            out_preloaded, out_fresh,
+            "pre-loaded and fresh limiter outputs should differ"
+        );
+        assert!(
+            out_preloaded[0] < out_fresh[0],
+            "pre-loaded limiter first sample {} should be smaller than fresh limiter first sample {}",
+            out_preloaded[0],
+            out_fresh[0]
+        );
     }
 
     /// 8. Empty input.
@@ -320,7 +368,10 @@ mod tests {
         // Gain 0.0
         let out_zero = lim.process(&input, 0.0);
         assert_eq!(out_zero.len(), input.len());
-        assert!(out_zero.iter().all(|&s| s == 0), "0.0 gain should result in all zeros");
+        assert!(
+            out_zero.iter().all(|&s| s == 0),
+            "0.0 gain should result in all zeros"
+        );
 
         // Gain 1.0
         let out_unity = lim.process(&input, 1.0);
@@ -354,6 +405,9 @@ mod tests {
 
         let out = lim.process(&input, 1.0);
         let expected: Vec<i16> = input.iter().map(|&s| s as i16).collect();
-        assert_eq!(out, expected, "below ceiling input must be bit-exact at unity gain");
+        assert_eq!(
+            out, expected,
+            "below ceiling input must be bit-exact at unity gain"
+        );
     }
 }

src/audio/mod.rs

@@ -1,6 +1,6 @@
-use std::sync::mpsc::{Receiver, Sender};
 use std::sync::Arc;
 use std::sync::atomic::AtomicUsize;
+use std::sync::mpsc::{Receiver, Sender};
 use thiserror::Error;
 
 /// Playback output channel count. Capture/encode/network remain mono; only the
@@ -35,7 +35,11 @@ pub enum AudioError {
 pub trait AudioBackend: Send + Sync {
     /// Starts capturing raw PCM audio from the input device (microphone),
     /// sending chunks of samples (e.g. `Vec<i16>`) to the provided Sender.
-    fn start_capture(&self, tx: Sender<Vec<i16>>, target_node: Option<String>) -> Result<(), AudioError>;
+    fn start_capture(
+        &self,
+        tx: Sender<Vec<i16>>,
+        target_node: Option<String>,
+    ) -> Result<(), AudioError>;
 
     /// Starts playing back raw PCM audio to the output device (speaker),
     /// reading mixed/incoming chunks of samples from the provided Receiver.
@@ -65,16 +69,16 @@ pub mod pan;
 // Linear resamplers used by the Windows/cpal backend (W4). Platform-neutral and
 // pure, so it builds (and its tests run) everywhere even though only the cpal
 // backend wires it in.
-pub mod resample;
+#[cfg(windows)]
+pub mod cpal_impl;
 #[cfg(target_os = "linux")]
 pub mod echo_cancel;
 #[cfg(target_os = "linux")]
 pub mod pipewire_impl;
-#[cfg(windows)]
-pub mod cpal_impl;
 #[cfg(target_os = "linux")]
 pub mod pw_cli;
 pub mod recorder;
+pub mod resample;
 
 /// A selectable audio device for the input/output pickers. `name` is the stable
 /// identifier the backend uses to request the device (`target_node`);
@@ -96,10 +100,10 @@ impl std::fmt::Display for AudioDevice {
 // Enumerate audio input/output devices for the pickers (sorted by description),
 // returning the same `AudioDevice` shape regardless of platform: PipeWire
 // (`pw-cli`) on Linux, cpal/WASAPI on Windows.
-#[cfg(target_os = "linux")]
-pub use pw_cli::enumerate_audio_devices;
 #[cfg(windows)]
 pub use cpal_impl::enumerate_audio_devices;
+#[cfg(target_os = "linux")]
+pub use pw_cli::enumerate_audio_devices;
 
 /// The audio backend implementation for the current platform.
 ///

src/audio/multitrack.rs

@@ -108,7 +108,13 @@ pub fn track_filename(name: &str, id: &EndpointId) -> String {
     let clean = crate::sanitize::sanitize_name(name);
     let mut slug: String = clean
         .chars()
-        .map(|c| if c.is_ascii_alphanumeric() { c.to_ascii_lowercase() } else { '-' })
+        .map(|c| {
+            if c.is_ascii_alphanumeric() {
+                c.to_ascii_lowercase()
+            } else {
+                '-'
+            }
+        })
         .collect();
     // Collapse runs of '-' and trim them off the ends.
     while slug.contains("--") {
@@ -284,7 +290,10 @@ mod tests {
         let short: String = id.to_string().chars().take(8).collect();
         assert_eq!(track_filename("Alice", &id), format!("alice-{short}.wav"));
         // Spaces / punctuation collapse to single dashes, trimmed.
-        assert_eq!(track_filename("  Bob the Builder! ", &id), format!("bob-the-builder-{short}.wav"));
+        assert_eq!(
+            track_filename("  Bob the Builder! ", &id),
+            format!("bob-the-builder-{short}.wav")
+        );
         // A name that sanitizes/slugs to nothing falls back to "peer".
         assert_eq!(track_filename("!!!", &id), format!("peer-{short}.wav"));
     }
@@ -327,10 +336,18 @@ mod tests {
         rec.finalize().unwrap();
 
         let expected = 3 * frame;
-        assert_eq!(wav_samples(&dir.join("me.wav")), expected, "mic padded to full length");
+        assert_eq!(
+            wav_samples(&dir.join("me.wav")),
+            expected,
+            "mic padded to full length"
+        );
         assert_eq!(wav_samples(&dir.join("mix.wav")), expected);
         assert_eq!(wav_samples(&dir.join(track_filename("p1", &p1))), expected);
-        assert_eq!(wav_samples(&dir.join(track_filename("p2", &p2))), expected, "silent peer still full length");
+        assert_eq!(
+            wav_samples(&dir.join(track_filename("p2", &p2))),
+            expected,
+            "silent peer still full length"
+        );
     }
 
     #[test]
@@ -357,8 +374,14 @@ mod tests {
         rec.finalize().unwrap();
 
         // Both tracks are the full 5 cycles long (late one was back-padded).
-        assert_eq!(wav_samples(&dir.join(track_filename("early", &early))), 5 * frame);
-        assert_eq!(wav_samples(&dir.join(track_filename("late", &late))), 5 * frame);
+        assert_eq!(
+            wav_samples(&dir.join(track_filename("early", &early))),
+            5 * frame
+        );
+        assert_eq!(
+            wav_samples(&dir.join(track_filename("late", &late))),
+            5 * frame
+        );
 
         // The late track's first 2 cycles are silence, then the real audio.
         let bytes = std::fs::read(dir.join(track_filename("late", &late))).unwrap();
@@ -378,6 +401,9 @@ mod tests {
         rec.end_cycle().unwrap();
         rec.finalize().unwrap();
         assert!(dir.join("me.wav").exists());
-        assert!(!dir.join("mix.wav").exists(), "no mix track in stems-only mode");
+        assert!(
+            !dir.join("mix.wav").exists(),
+            "no mix track in stems-only mode"
+        );
     }
 }

src/audio/pan.rs

@@ -23,7 +23,10 @@ pub fn pan_gains(pan: f32) -> (f32, f32) {
 /// still following the same equal-power curve as a peer is moved away from center.
 pub fn playback_pan_gains(pan: f32) -> (f32, f32) {
     let (left, right) = pan_gains(pan);
-    (left * std::f32::consts::SQRT_2, right * std::f32::consts::SQRT_2)
+    (
+        left * std::f32::consts::SQRT_2,
+        right * std::f32::consts::SQRT_2,
+    )
 }
 
 #[cfg(test)]
@@ -36,8 +39,14 @@ mod tests {
     fn hard_left_and_right_are_endpoints() {
         assert_eq!(pan_gains(-1.0), (1.0, 0.0));
         let (l, r) = pan_gains(1.0);
-        assert!(l.abs() < EPS, "left at hard-right should be zero-ish, got {l}");
-        assert!((r - 1.0).abs() < EPS, "right at hard-right should be one, got {r}");
+        assert!(
+            l.abs() < EPS,
+            "left at hard-right should be zero-ish, got {l}"
+        );
+        assert!(
+            (r - 1.0).abs() < EPS,
+            "right at hard-right should be one, got {r}"
+        );
     }
 
     #[test]
@@ -55,8 +64,14 @@ mod tests {
         let mut prev_r = f32::NEG_INFINITY;
         for pan in pans {
             let (l, r) = pan_gains(pan);
-            assert!(l <= prev_l + EPS, "left gain must not rise as pan moves right");
-            assert!(r >= prev_r - EPS, "right gain must not fall as pan moves right");
+            assert!(
+                l <= prev_l + EPS,
+                "left gain must not rise as pan moves right"
+            );
+            assert!(
+                r >= prev_r - EPS,
+                "right gain must not fall as pan moves right"
+            );
             prev_l = l;
             prev_r = r;
         }

src/audio/pipewire_impl.rs

@@ -1,13 +1,16 @@
 use crate::audio::{AudioBackend, AudioError};
-use std::sync::mpsc::{Sender, Receiver, RecvTimeoutError};
-use std::sync::{Arc, Mutex};
-use std::sync::atomic::{AtomicBool, AtomicU64, AtomicUsize, Ordering};
-use std::thread::{self, JoinHandle};
-use std::time::Duration;
 use pipewire as pw;
 use pw::{properties::properties, spa};
+use ringbuf::{
+    HeapRb,
+    traits::{Consumer, Producer, Split},
+};
 use spa::pod::Pod;
-use ringbuf::{HeapRb, traits::{Consumer, Producer, Split}};
+use std::sync::atomic::{AtomicBool, AtomicU64, AtomicUsize, Ordering};
+use std::sync::mpsc::{Receiver, RecvTimeoutError, Sender};
+use std::sync::{Arc, Mutex};
+use std::thread::{self, JoinHandle};
+use std::time::Duration;
 
 pub struct PipeWireBackend {
     capture_state: Mutex<Option<CaptureState>>,
@@ -41,7 +44,11 @@ impl PipeWireBackend {
 }
 
 impl AudioBackend for PipeWireBackend {
-    fn start_capture(&self, tx: Sender<Vec<i16>>, target_node: Option<String>) -> Result<(), AudioError> {
+    fn start_capture(
+        &self,
+        tx: Sender<Vec<i16>>,
+        target_node: Option<String>,
+    ) -> Result<(), AudioError> {
         let mut capture_guard = self.capture_state.lock().unwrap();
         if capture_guard.is_some() {
             return Err(AudioError::Stream("Capture already started".to_string()));
@@ -108,12 +115,17 @@ impl AudioBackend for PipeWireBackend {
     }
 }
 
-fn run_capture(cmd_rx: pw::channel::Receiver<()>, tx: Sender<Vec<i16>>, target_node: Option<String>) -> Result<(), AudioError> {
-    let mainloop = pw::main_loop::MainLoopRc::new(None)
-        .map_err(|e| AudioError::Init(e.to_string()))?;
+fn run_capture(
+    cmd_rx: pw::channel::Receiver<()>,
+    tx: Sender<Vec<i16>>,
+    target_node: Option<String>,
+) -> Result<(), AudioError> {
+    let mainloop =
+        pw::main_loop::MainLoopRc::new(None).map_err(|e| AudioError::Init(e.to_string()))?;
     let context = pw::context::ContextRc::new(&mainloop, None)
         .map_err(|e| AudioError::Init(e.to_string()))?;
-    let core = context.connect_rc(None)
+    let core = context
+        .connect_rc(None)
         .map_err(|e| AudioError::Init(e.to_string()))?;
 
     // Ring buffer setup: 9600 samples (200ms capacity for mono 48kHz)
@@ -181,15 +193,16 @@ fn run_capture(cmd_rx: pw::channel::Receiver<()>, tx: Sender<Vec<i16>>, target_n
 
     let mut params = [Pod::from_bytes(&values).unwrap()];
 
-    stream.connect(
-        spa::utils::Direction::Input,
-        None,
-        pw::stream::StreamFlags::AUTOCONNECT
-            | pw::stream::StreamFlags::MAP_BUFFERS
-            | pw::stream::StreamFlags::RT_PROCESS,
-        &mut params,
-    )
-    .map_err(|e| AudioError::Stream(e.to_string()))?;
+    stream
+        .connect(
+            spa::utils::Direction::Input,
+            None,
+            pw::stream::StreamFlags::AUTOCONNECT
+                | pw::stream::StreamFlags::MAP_BUFFERS
+                | pw::stream::StreamFlags::RT_PROCESS,
+            &mut params,
+        )
+        .map_err(|e| AudioError::Stream(e.to_string()))?;
 
     // Spawn the worker thread to pop from consumer and send Vec<i16> frames
     let running = Arc::new(AtomicBool::new(true));
@@ -257,11 +270,7 @@ const WORKER_POLL: Duration = Duration::from_millis(100);
 /// every `WORKER_POLL` even when no frames arrive — this is what lets `stop()`
 /// join the worker promptly instead of hanging on a parked blocking `recv()`
 /// (bug A7). Pure w.r.t. its inputs (no PipeWire), so it's unit-testable.
-fn drain_loop(
-    rx: &Receiver<Vec<i16>>,
-    running: &AtomicBool,
-    mut on_frame: impl FnMut(Vec<i16>),
-) {
+fn drain_loop(rx: &Receiver<Vec<i16>>, running: &AtomicBool, mut on_frame: impl FnMut(Vec<i16>)) {
     while running.load(Ordering::Relaxed) {
         match rx.recv_timeout(WORKER_POLL) {
             Ok(frame) => on_frame(frame),
@@ -293,7 +302,11 @@ fn publish_frame<P: Producer<Item = i16>>(
 fn frames_to_produce(requested: usize, mapped_frames: usize) -> usize {
     /// Safe per-cycle fallback when the graph doesn't report a quantum.
     const FALLBACK_FRAMES: usize = 1024;
-    let want = if requested > 0 { requested } else { FALLBACK_FRAMES };
+    let want = if requested > 0 {
+        requested
+    } else {
+        FALLBACK_FRAMES
+    };
     want.min(mapped_frames)
 }
 
@@ -303,11 +316,12 @@ fn run_playback(
     target_node: Option<String>,
     fill_gauge: Arc<AtomicUsize>,
 ) -> Result<(), AudioError> {
-    let mainloop = pw::main_loop::MainLoopRc::new(None)
-        .map_err(|e| AudioError::Init(e.to_string()))?;
+    let mainloop =
+        pw::main_loop::MainLoopRc::new(None).map_err(|e| AudioError::Init(e.to_string()))?;
     let context = pw::context::ContextRc::new(&mainloop, None)
         .map_err(|e| AudioError::Init(e.to_string()))?;
-    let core = context.connect_rc(None)
+    let core = context
+        .connect_rc(None)
         .map_err(|e| AudioError::Init(e.to_string()))?;
 
     // Ring buffer setup: 19200 interleaved samples (200ms capacity for stereo
@@ -428,7 +442,9 @@ fn run_playback(
                         }
                         if starved > 0 {
                             // One wait-free atomic add per quantum — RT-safe.
-                            user_data.underrun_samples.fetch_add(starved, Ordering::Relaxed);
+                            user_data
+                                .underrun_samples
+                                .fetch_add(starved, Ordering::Relaxed);
                         }
                         // Decrement the exact occupancy counter by the samples we
                         // actually pulled (excluding underruns, which removed
@@ -493,7 +509,11 @@ fn run_playback(
                 pw::spa::pod::Value::Choice(pw::spa::pod::ChoiceValue::Int(
                     pw::spa::utils::Choice(
                         pw::spa::utils::ChoiceFlags::empty(),
-                        pw::spa::utils::ChoiceEnum::Range { default: 8, min: 2, max: 64 },
+                        pw::spa::utils::ChoiceEnum::Range {
+                            default: 8,
+                            min: 2,
+                            max: 64,
+                        },
                     ),
                 )),
             ),
@@ -524,15 +544,16 @@ fn run_playback(
         Pod::from_bytes(&buffers_values).unwrap(),
     ];
 
-    stream.connect(
-        spa::utils::Direction::Output,
-        None,
-        pw::stream::StreamFlags::AUTOCONNECT
-            | pw::stream::StreamFlags::MAP_BUFFERS
-            | pw::stream::StreamFlags::RT_PROCESS,
-        &mut params,
-    )
-    .map_err(|e| AudioError::Stream(e.to_string()))?;
+    stream
+        .connect(
+            spa::utils::Direction::Output,
+            None,
+            pw::stream::StreamFlags::AUTOCONNECT
+                | pw::stream::StreamFlags::MAP_BUFFERS
+                | pw::stream::StreamFlags::RT_PROCESS,
+            &mut params,
+        )
+        .map_err(|e| AudioError::Stream(e.to_string()))?;
 
     // Spawn a worker thread to read from rx and push to producer
     let running = Arc::new(AtomicBool::new(true));
@@ -607,7 +628,10 @@ fn run_playback(
 #[cfg(test)]
 mod tests {
     use super::{drain_loop, for_each_capture_sample, frames_to_produce, publish_frame};
-    use ringbuf::{HeapRb, traits::{Consumer, Producer, Split}};
+    use ringbuf::{
+        HeapRb,
+        traits::{Consumer, Producer, Split},
+    };
     use std::sync::atomic::{AtomicBool, AtomicU64, AtomicUsize, Ordering};
     use std::sync::{Arc, Mutex};
     use std::time::Duration;
@@ -647,9 +671,7 @@ mod tests {
     #[test]
     fn capture_size_larger_than_mapping_is_clamped() {
         let mut samples = Vec::new();
-        for_each_capture_sample(&[1, 0, 2, 0, 3], usize::MAX, |sample| {
-            samples.push(sample)
-        });
+        for_each_capture_sample(&[1, 0, 2, 0, 3], usize::MAX, |sample| samples.push(sample));
         assert_eq!(samples, vec![1, 2]);
     }
 

src/audio/pw_cli.rs

@@ -16,11 +16,20 @@ pub fn enumerate_audio_devices() -> Vec<AudioDevice> {
 /// Emits the in-progress node as an `AudioDevice` if it's a complete Audio/*
 /// node, then resets the accumulators for the next block. Non-audio or
 /// incomplete blocks are dropped (but still reset).
-fn push_device(name: &mut String, desc: &mut String, class: &mut String, out: &mut Vec<AudioDevice>) {
+fn push_device(
+    name: &mut String,
+    desc: &mut String,
+    class: &mut String,
+    out: &mut Vec<AudioDevice>,
+) {
     if !name.is_empty() && class.starts_with("Audio/") {
         out.push(AudioDevice {
             name: name.clone(),
-            description: if desc.is_empty() { name.clone() } else { desc.clone() },
+            description: if desc.is_empty() {
+                name.clone()
+            } else {
+                desc.clone()
+            },
             is_input: class == "Audio/Source",
         });
     }
@@ -44,7 +53,12 @@ fn parse_pw_nodes(text: &str) -> Vec<AudioDevice> {
     for line in text.lines() {
         let line = line.trim();
         if line.starts_with("id ") {
-            push_device(&mut current_name, &mut current_desc, &mut current_class, &mut devices);
+            push_device(
+                &mut current_name,
+                &mut current_desc,
+                &mut current_class,
+                &mut devices,
+            );
         } else if let Some(val) = line.strip_prefix("node.name = \"") {
             current_name = val.trim_end_matches('"').to_string();
         } else if let Some(val) = line.strip_prefix("node.description = \"") {
@@ -53,7 +67,12 @@ fn parse_pw_nodes(text: &str) -> Vec<AudioDevice> {
             current_class = val.trim_end_matches('"').to_string();
         }
     }
-    push_device(&mut current_name, &mut current_desc, &mut current_class, &mut devices);
+    push_device(
+        &mut current_name,
+        &mut current_desc,
+        &mut current_class,
+        &mut devices,
+    );
 
     devices.sort_by(|a, b| a.description.cmp(&b.description));
     devices
@@ -108,8 +127,14 @@ mod tests {
     fn source_is_input_sink_is_output() {
         let devices = parse_pw_nodes(SAMPLE_NODES);
         // Find devices by name or description to verify is_input
-        let mic = devices.iter().find(|d| d.name == "alsa_input.builtin").unwrap();
-        let speakers = devices.iter().find(|d| d.name == "alsa_output.builtin").unwrap();
+        let mic = devices
+            .iter()
+            .find(|d| d.name == "alsa_input.builtin")
+            .unwrap();
+        let speakers = devices
+            .iter()
+            .find(|d| d.name == "alsa_output.builtin")
+            .unwrap();
         let bare = devices.iter().find(|d| d.name == "bare.sink").unwrap();
 
         assert!(mic.is_input);

src/audio/resample.rs

@@ -145,7 +145,10 @@ impl StereoPullResampler {
             self.frac -= 1.0;
         }
         let f = self.frac as f32;
-        let out = (lerp(self.prev.0, self.cur.0, f), lerp(self.prev.1, self.cur.1, f));
+        let out = (
+            lerp(self.prev.0, self.cur.0, f),
+            lerp(self.prev.1, self.cur.1, f),
+        );
         self.frac += self.step;
         Some(out)
     }
@@ -273,7 +276,10 @@ mod tests {
             }
         }
         // At step 2.0 we consume ~2 input frames per output frame.
-        assert!(idx > emitted, "consumed {idx} input, emitted {emitted} output");
+        assert!(
+            idx > emitted,
+            "consumed {idx} input, emitted {emitted} output"
+        );
     }
 
     /// A zero rate must not produce a zero `step` (which would spin `push`'s inner

src/avatar.rs

@@ -206,7 +206,10 @@ pub struct ByteLru<V> {
 impl<V: Clone> ByteLru<V> {
     /// Create an LRU holding at most `cap` entries (`cap` is clamped to >= 1).
     pub fn new(cap: usize) -> Self {
-        Self { cap: cap.max(1), entries: Vec::new() }
+        Self {
+            cap: cap.max(1),
+            entries: Vec::new(),
+        }
     }
 
     /// Return the cached value for these exact `bytes`, building and inserting it
@@ -349,7 +352,10 @@ mod tests {
     fn preset_png_in_range_and_out_of_range() {
         // Every declared preset index resolves to embedded bytes.
         for i in 0..PRESET_COUNT {
-            assert!(Avatar::Preset(i).preset_png().is_some(), "preset {i} missing");
+            assert!(
+                Avatar::Preset(i).preset_png().is_some(),
+                "preset {i} missing"
+            );
         }
         // Out-of-range index gracefully yields None (→ monogram fallback).
         assert!(Avatar::Preset(PRESET_COUNT).preset_png().is_none());
@@ -406,7 +412,10 @@ mod tests {
     #[test]
     fn sanitize_incoming_rejects_junk_and_oversize() {
         // Not valid base64 / not a PNG → downgraded to monogram.
-        assert_eq!(Avatar::Custom("not base64!!!".into()).sanitize_incoming(), Avatar::Monogram);
+        assert_eq!(
+            Avatar::Custom("not base64!!!".into()).sanitize_incoming(),
+            Avatar::Monogram
+        );
         // Over the byte cap → downgraded without even decoding.
         let huge = Avatar::Custom("A".repeat(CUSTOM_MAX_B64 + 1));
         assert_eq!(huge.sanitize_incoming(), Avatar::Monogram);

src/background.rs

@@ -66,7 +66,10 @@ pub fn game_background_filename(game_id: &str) -> String {
 /// recedes the image so body text and panel chrome stay readable, and it re-tints
 /// per theme since `base` comes from the active palette.
 pub fn scrim_color(base: Color, dim: f32) -> Color {
-    Color { a: dim.clamp(0.0, 1.0), ..base }
+    Color {
+        a: dim.clamp(0.0, 1.0),
+        ..base
+    }
 }
 
 #[cfg(test)]

src/bin/specview.rs

@@ -105,7 +105,11 @@ fn cmd_gen(args: &[String]) -> Result<(), String> {
         "pink" => generators::pink_noise(amp, len, seed),
         "impulse" => generators::impulse(amp, len),
         "silence" => generators::silence(len),
-        other => return Err(format!("unknown kind {other:?} (sine sweep white pink impulse silence)")),
+        other => {
+            return Err(format!(
+                "unknown kind {other:?} (sine sweep white pink impulse silence)"
+            ));
+        }
     };
 
     wav::write(Path::new(out), &samples, SAMPLE_RATE)?;
@@ -125,8 +129,12 @@ fn cmd_gen(args: &[String]) -> Result<(), String> {
 /// in which frequency range any residual lives.
 fn cmd_erle(args: &[String]) -> Result<(), String> {
     let (positional, flags) = parse_args(args);
-    let before = positional.first().ok_or("erle needs <before.wav> <after.wav>")?;
-    let after = positional.get(1).ok_or("erle needs <before.wav> <after.wav>")?;
+    let before = positional
+        .first()
+        .ok_or("erle needs <before.wav> <after.wav>")?;
+    let after = positional
+        .get(1)
+        .ok_or("erle needs <before.wav> <after.wav>")?;
 
     let b = wav::read(Path::new(before))?;
     let a = wav::read(Path::new(after))?;
@@ -239,17 +247,34 @@ fn cmd_aec(args: &[String]) -> Result<(), String> {
         1000.0 * tail as f32 / sr as f32,
         metrics::dbfs(atten),
     );
-    println!("  filter: {taps} taps, mu {mu}{}", if has_near { " (with near-end / double-talk)" } else { "" });
+    println!(
+        "  filter: {taps} taps, mu {mu}{}",
+        if has_near {
+            " (with near-end / double-talk)"
+        } else {
+            ""
+        }
+    );
     if has_near {
         let dtd = if flags.present("no-dtd") { "off" } else { "on" };
         println!(
             "  double-talk: detector {dtd}, threshold {dtd_threshold}, flagged {:.0}% of samples{}",
             100.0 * canceller.double_talk_rate(),
-            if onset > 0 { format!(", near-end onset {:.1}s", onset as f32 / sr as f32) } else { String::new() },
+            if onset > 0 {
+                format!(", near-end onset {:.1}s", onset as f32 / sr as f32)
+            } else {
+                String::new()
+            },
         );
     }
-    println!("  mic before: {:.1} dBFS rms", metrics::dbfs(metrics::rms(&mic)));
-    println!("  residual echo after: {:.1} dBFS rms", metrics::dbfs(metrics::rms(&residual)));
+    println!(
+        "  mic before: {:.1} dBFS rms",
+        metrics::dbfs(metrics::rms(&mic))
+    );
+    println!(
+        "  residual echo after: {:.1} dBFS rms",
+        metrics::dbfs(metrics::rms(&residual))
+    );
     println!("  ERLE broadband: {broadband:+.1} dB");
     println!("  ERLE early/late: {early:+.1} -> {late:+.1} dB  (rise = filter converging)");
 
@@ -278,9 +303,21 @@ fn cmd_aec(args: &[String]) -> Result<(), String> {
     }
     if flags.present("show") {
         println!("\n--- mic (echo present) ---");
-        print!("{}", render::render(&stft::analyze(&mic, sr, 2048, 512), &render::RenderOpts::default()));
+        print!(
+            "{}",
+            render::render(
+                &stft::analyze(&mic, sr, 2048, 512),
+                &render::RenderOpts::default()
+            )
+        );
         println!("\n--- cleaned (post-AEC) ---");
-        print!("{}", render::render(&stft::analyze(&cleaned, sr, 2048, 512), &render::RenderOpts::default()));
+        print!(
+            "{}",
+            render::render(
+                &stft::analyze(&cleaned, sr, 2048, 512),
+                &render::RenderOpts::default()
+            )
+        );
     }
     Ok(())
 }
@@ -339,13 +376,22 @@ impl Flags {
         self.bools.iter().any(|b| b == key) || self.map.contains_key(key)
     }
     fn f32_or(&self, key: &str, default: f32) -> f32 {
-        self.map.get(key).and_then(|v| v.parse().ok()).unwrap_or(default)
+        self.map
+            .get(key)
+            .and_then(|v| v.parse().ok())
+            .unwrap_or(default)
     }
     fn usize_or(&self, key: &str, default: usize) -> usize {
-        self.map.get(key).and_then(|v| v.parse().ok()).unwrap_or(default)
+        self.map
+            .get(key)
+            .and_then(|v| v.parse().ok())
+            .unwrap_or(default)
     }
     fn u64_or(&self, key: &str, default: u64) -> u64 {
-        self.map.get(key).and_then(|v| v.parse().ok()).unwrap_or(default)
+        self.map
+            .get(key)
+            .and_then(|v| v.parse().ok())
+            .unwrap_or(default)
     }
 }
 

src/bin/test_net.rs

@@ -1,9 +1,6 @@
-use peerspeak::network::{
-    gossip::IrohGossipState,
-    RoomState, PeerState,
-};
 use iroh::{Endpoint, endpoint::presets};
 use iroh_gossip::net::Gossip;
+use peerspeak::network::{PeerState, RoomState, gossip::IrohGossipState};
 use tokio::time::{self, Duration};
 
 #[tokio::main]
@@ -18,7 +15,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         .address_lookup(lookup_a.clone())
         .bind()
         .await?;
-    
+
     endpoint_a.online().await;
     println!("Node A online. ID: {}", endpoint_a.id());
 
@@ -27,7 +24,12 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         .accept(iroh_gossip::net::GOSSIP_ALPN, gossip_a.clone())
         .spawn();
 
-    let room_a = IrohGossipState::new(endpoint_a.clone(), gossip_a.clone(), lookup_a.clone(), secret_a);
+    let room_a = IrohGossipState::new(
+        endpoint_a.clone(),
+        gossip_a.clone(),
+        lookup_a.clone(),
+        secret_a,
+    );
 
     // 2. Node B (Client) Setup
     let lookup_b = iroh::address_lookup::memory::MemoryLookup::new();
@@ -46,7 +48,12 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         .accept(iroh_gossip::net::GOSSIP_ALPN, gossip_b.clone())
         .spawn();
 
-    let room_b = IrohGossipState::new(endpoint_b.clone(), gossip_b.clone(), lookup_b.clone(), secret_b);
+    let room_b = IrohGossipState::new(
+        endpoint_b.clone(),
+        gossip_b.clone(),
+        lookup_b.clone(),
+        secret_b,
+    );
 
     // 3. Create room on Node A
     let topic_id = rand::random();

src/codec/opus_impl.rs

@@ -1,5 +1,5 @@
-use crate::codec::{AudioEncoder, AudioDecoder, CodecError};
-use opus::{Encoder, Decoder, Application, Channels};
+use crate::codec::{AudioDecoder, AudioEncoder, CodecError};
+use opus::{Application, Channels, Decoder, Encoder};
 
 pub struct OpusEncoder {
     encoder: Encoder,
@@ -8,7 +8,11 @@ pub struct OpusEncoder {
 impl OpusEncoder {
     /// Creates a new Opus encoder.
     /// Standard voice parameters: sample_rate = 48000, channels = Channels::Mono, application = Application::Voip
-    pub fn new(sample_rate: u32, channels: Channels, application: Application) -> Result<Self, CodecError> {
+    pub fn new(
+        sample_rate: u32,
+        channels: Channels,
+        application: Application,
+    ) -> Result<Self, CodecError> {
         let encoder = Encoder::new(sample_rate, channels, application)
             .map_err(|e| CodecError::Init(format!("Failed to create Opus encoder: {}", e)))?;
         Ok(Self { encoder })
@@ -20,9 +24,11 @@ impl AudioEncoder for OpusEncoder {
         // We allocate a buffer for the compressed output.
         // A maximum packet size of 4000 bytes is more than enough for a single voice frame.
         let mut compressed = vec![0u8; 4000];
-        let len = self.encoder.encode(pcm, &mut compressed)
+        let len = self
+            .encoder
+            .encode(pcm, &mut compressed)
             .map_err(|e| CodecError::Encode(format!("Opus encoding failed: {}", e)))?;
-        
+
         compressed.truncate(len);
         Ok(compressed)
     }
@@ -42,10 +48,18 @@ impl OpusDecoder {
     /// Creates a new Opus decoder.
     /// Standard voice parameters: sample_rate = 48000, channels = Channels::Mono.
     /// `frame_samples` is the per-channel length of one transmitted frame (e.g. 960).
-    pub fn new(sample_rate: u32, channels: Channels, frame_samples: usize) -> Result<Self, CodecError> {
+    pub fn new(
+        sample_rate: u32,
+        channels: Channels,
+        frame_samples: usize,
+    ) -> Result<Self, CodecError> {
         let decoder = Decoder::new(sample_rate, channels)
             .map_err(|e| CodecError::Init(format!("Failed to create Opus decoder: {}", e)))?;
-        Ok(Self { decoder, channels, frame_samples })
+        Ok(Self {
+            decoder,
+            channels,
+            frame_samples,
+        })
     }
 
     fn channels_count(&self) -> usize {
@@ -73,7 +87,9 @@ impl AudioDecoder for OpusDecoder {
             }
         };
 
-        let decoded_per_channel = self.decoder.decode(input, &mut pcm, false)
+        let decoded_per_channel = self
+            .decoder
+            .decode(input, &mut pcm, false)
             .map_err(|e| CodecError::Decode(format!("Opus decoding failed: {}", e)))?;
 
         pcm.truncate(decoded_per_channel * channels_count);
@@ -100,7 +116,10 @@ mod tests {
 
         // encode it
         let compressed = encoder.encode(&pcm).unwrap();
-        assert!(!compressed.is_empty(), "Compressed buffer should not be empty");
+        assert!(
+            !compressed.is_empty(),
+            "Compressed buffer should not be empty"
+        );
         assert!(
             compressed.len() < pcm.len() * std::mem::size_of::<i16>(),
             "Compressed size ({}) should be smaller than raw PCM size ({})",
@@ -110,13 +129,21 @@ mod tests {
 
         // decode it
         let decoded = decoder.decode(Some(&compressed)).unwrap();
-        assert_eq!(decoded.len(), 960, "Decoded sample count should be exactly 960");
+        assert_eq!(
+            decoded.len(),
+            960,
+            "Decoded sample count should be exactly 960"
+        );
 
         // 2. Round-trip carries signal energy (not silence)
         let sum_sq: f64 = decoded.iter().map(|&x| (x as f64).powi(2)).sum();
         let rms = (sum_sq / decoded.len() as f64).sqrt();
         // Since input had amplitude ~10000, let's verify RMS is significantly above 0 (e.g. > 100.0)
-        assert!(rms > 100.0, "Decoded signal should carry energy (RMS was {})", rms);
+        assert!(
+            rms > 100.0,
+            "Decoded signal should carry energy (RMS was {})",
+            rms
+        );
     }
 
     #[test]
@@ -125,11 +152,19 @@ mod tests {
 
         // decode(None) returns exactly frame_samples (960) samples
         let plc_none = decoder.decode(None).unwrap();
-        assert_eq!(plc_none.len(), 960, "decode(None) should yield exactly 960 samples");
+        assert_eq!(
+            plc_none.len(),
+            960,
+            "decode(None) should yield exactly 960 samples"
+        );
 
         // decode(Some(&[])) (empty slice) does the same
         let plc_empty = decoder.decode(Some(&[])).unwrap();
-        assert_eq!(plc_empty.len(), 960, "decode(Some(&[])) should yield exactly 960 samples");
+        assert_eq!(
+            plc_empty.len(),
+            960,
+            "decode(Some(&[])) should yield exactly 960 samples"
+        );
     }
 
     #[test]
@@ -140,7 +175,11 @@ mod tests {
         let pcm = vec![0i16; 960];
         let compressed = encoder.encode(&pcm).unwrap();
         let decoded = decoder.decode(Some(&compressed)).unwrap();
-        assert_eq!(decoded.len(), 960, "Decoded sample count should match packet duration");
+        assert_eq!(
+            decoded.len(),
+            960,
+            "Decoded sample count should match packet duration"
+        );
     }
 
     #[test]
@@ -149,11 +188,18 @@ mod tests {
 
         // decode(None) returns exactly frame_samples * 2 (1920) samples
         let plc_none = decoder.decode(None).unwrap();
-        assert_eq!(plc_none.len(), 960 * 2, "Stereo decode(None) should yield exactly 1920 samples");
+        assert_eq!(
+            plc_none.len(),
+            960 * 2,
+            "Stereo decode(None) should yield exactly 1920 samples"
+        );
 
         // decode(Some(&[])) (empty slice) does the same
         let plc_empty = decoder.decode(Some(&[])).unwrap();
-        assert_eq!(plc_empty.len(), 960 * 2, "Stereo decode(Some(&[])) should yield exactly 1920 samples");
+        assert_eq!(
+            plc_empty.len(),
+            960 * 2,
+            "Stereo decode(Some(&[])) should yield exactly 1920 samples"
+        );
     }
 }
-

src/config.rs

@@ -27,8 +27,11 @@ pub enum NetworkMode {
 
 impl NetworkMode {
     /// All variants, for presentation in a picker.
-    pub const ALL: [NetworkMode; 3] =
-        [NetworkMode::RelayNoDiscovery, NetworkMode::N0Full, NetworkMode::DirectOnly];
+    pub const ALL: [NetworkMode; 3] = [
+        NetworkMode::RelayNoDiscovery,
+        NetworkMode::N0Full,
+        NetworkMode::DirectOnly,
+    ];
 }
 
 /// Arrangement of the in-call room screen, chosen via the layout picker.
@@ -45,8 +48,11 @@ pub enum RoomLayout {
 
 impl RoomLayout {
     /// All variants, in picker display order.
-    pub const ALL: [RoomLayout; 3] =
-        [RoomLayout::ThreeColumn, RoomLayout::BottomDock, RoomLayout::Drawer];
+    pub const ALL: [RoomLayout; 3] = [
+        RoomLayout::ThreeColumn,
+        RoomLayout::BottomDock,
+        RoomLayout::Drawer,
+    ];
 }
 
 /// What a call recording captures. `Mixed` is the original single-file behaviour;
@@ -65,8 +71,11 @@ pub enum RecordingMode {
 
 impl RecordingMode {
     /// All variants, in picker display order.
-    pub const ALL: [RecordingMode; 3] =
-        [RecordingMode::Mixed, RecordingMode::Multitrack, RecordingMode::Both];
+    pub const ALL: [RecordingMode; 3] = [
+        RecordingMode::Mixed,
+        RecordingMode::Multitrack,
+        RecordingMode::Both,
+    ];
 
     /// True when this mode writes per-peer stem tracks (Multitrack or Both).
     pub fn is_multitrack(self) -> bool {
@@ -707,7 +716,10 @@ mod tests {
 
         assert_eq!(deserialized.network_mode, NetworkMode::RelayNoDiscovery);
         // Configs predating the presence posture load as friends-only (no beacon).
-        assert_eq!(deserialized.presence_mode, crate::presence::PresenceMode::Normal);
+        assert_eq!(
+            deserialized.presence_mode,
+            crate::presence::PresenceMode::Normal
+        );
         assert!(!deserialized.echo_cancellation_enabled);
         assert!(deserialized.notifications_enabled);
         // Configs predating the volume sliders must load at unity gain.
@@ -735,7 +747,10 @@ mod tests {
         // Configs predating the per-sound flags (W6) enable every chime, so an
         // upgrade is silent-change-free.
         for sound in Sound::ALL {
-            assert!(deserialized.sound_enabled(sound), "{sound:?} should default on");
+            assert!(
+                deserialized.sound_enabled(sound),
+                "{sound:?} should default on"
+            );
         }
         // The accessor and mutator agree round-trip.
         let mut cfg = AppConfig::default();
@@ -782,7 +797,10 @@ mod tests {
         }"#;
         let cfg: AppConfig = serde_json::from_str(legacy_json).unwrap();
         // The pre-existing single background survives untouched (still Option<String>).
-        assert_eq!(cfg.background.as_deref(), Some("/home/eric/.config/peerspeak/background.png"));
+        assert_eq!(
+            cfg.background.as_deref(),
+            Some("/home/eric/.config/peerspeak/background.png")
+        );
         assert!((cfg.background_dim - 0.4).abs() < f32::EPSILON);
         // The new game-detection fields default to off/empty → silent, opt-in upgrade.
         assert!(!cfg.game_presence_enabled);
@@ -794,9 +812,12 @@ mod tests {
     fn test_game_maps_serialize_deterministically() {
         // BTreeMap ordering makes the serialized config stable across runs.
         let mut cfg = AppConfig::default();
-        cfg.game_backgrounds.insert("steam:730".into(), "/a.png".into());
-        cfg.game_backgrounds.insert("exe:hl2_linux".into(), "/b.png".into());
-        cfg.game_process_map.insert("hl2_linux".into(), "Half-Life 2".into());
+        cfg.game_backgrounds
+            .insert("steam:730".into(), "/a.png".into());
+        cfg.game_backgrounds
+            .insert("exe:hl2_linux".into(), "/b.png".into());
+        cfg.game_process_map
+            .insert("hl2_linux".into(), "Half-Life 2".into());
         let json = serde_json::to_string(&cfg).unwrap();
         // Keys appear in sorted order (exe: before steam:).
         let bg = json.find("game_backgrounds").unwrap();
@@ -854,8 +875,7 @@ mod tests {
             recording_mode: RecordingMode::Both,
             ..AppConfig::default()
         };
-        let back: AppConfig =
-            serde_json::from_str(&serde_json::to_string(&cfg).unwrap()).unwrap();
+        let back: AppConfig = serde_json::from_str(&serde_json::to_string(&cfg).unwrap()).unwrap();
         assert_eq!(back.recording_mode, RecordingMode::Both);
         // is_multitrack() classifies correctly.
         assert!(!RecordingMode::Mixed.is_multitrack());
@@ -941,7 +961,10 @@ mod tests {
         assert_eq!(round_tripped.input_volume, 1.5);
         assert_eq!(round_tripped.output_volume, 0.25);
         assert_eq!(round_tripped.clip_volume, 0.7);
-        assert_eq!(round_tripped.music_playlist, vec!["/tmp/song.ogg".to_string()]);
+        assert_eq!(
+            round_tripped.music_playlist,
+            vec!["/tmp/song.ogg".to_string()]
+        );
         assert_eq!(round_tripped.music_volume, 0.6);
         assert!(round_tripped.music_broadcast);
         assert!(!round_tripped.show_player_bar);
@@ -950,7 +973,8 @@ mod tests {
 
     #[test]
     fn test_notifications_enabled_specifically() {
-        let missing_notifications = r#"{"input_device":"","output_device":"","noise_gate_threshold":0.01}"#;
+        let missing_notifications =
+            r#"{"input_device":"","output_device":"","noise_gate_threshold":0.01}"#;
         let config_missing: AppConfig = serde_json::from_str(missing_notifications).unwrap();
         assert!(config_missing.notifications_enabled);
 
@@ -1009,7 +1033,10 @@ mod tests {
 
         // Assert that deserialization succeeds even with unrecognized/unknown fields.
         // This confirms that serde does not reject unknown fields (i.e. default behavior).
-        assert!(deserialized_res.is_ok(), "Config deserialization failed when an unknown field was present");
+        assert!(
+            deserialized_res.is_ok(),
+            "Config deserialization failed when an unknown field was present"
+        );
 
         let config = deserialized_res.unwrap();
         assert_eq!(config.input_device, "");

src/core/messages.rs

@@ -9,7 +9,15 @@ pub enum CoreCommand {
     /// Join a room. `ticket` is "create" (or empty) to mint a fresh room, else a
     /// share ticket to join. `room_name` is the creator's chosen cosmetic label
     /// for a NEW room; it's ignored when joining (the label rides in the ticket).
-    Join { name: String, ticket: String, room_name: String, input_device: Option<String>, output_device: Option<String>, echo_cancellation: bool, avatar: crate::avatar::Avatar },
+    Join {
+        name: String,
+        ticket: String,
+        room_name: String,
+        input_device: Option<String>,
+        output_device: Option<String>,
+        echo_cancellation: bool,
+        avatar: crate::avatar::Avatar,
+    },
     Leave,
     /// Orderly app shutdown: finalize recordings, leave any active room, stop local
     /// audio/screen-share work, close the persistent network stack, then ack with
@@ -41,7 +49,10 @@ pub enum CoreCommand {
     /// Start/stop a standalone capture-only stream that reports the raw mic
     /// level via [`UiEvent::MicLevel`], for gate calibration outside a call.
     /// Ignored while a room session is active (the in-call meter covers that).
-    SetMicMonitor { enabled: bool, input_device: Option<String> },
+    SetMicMonitor {
+        enabled: bool,
+        input_device: Option<String>,
+    },
     /// Set the relay/discovery posture. Takes effect on the next room join,
     /// since the endpoint is (re)built then.
     SetNetworkMode(NetworkMode),
@@ -56,22 +67,40 @@ pub enum CoreCommand {
     /// Send a chat message carrying a file attachment. The app has already read +
     /// capped the file and built the descriptor; core makes the bytes available
     /// on the file plane and broadcasts the descriptor.
-    SendChatFile { text: String, attachment: crate::files::ChatAttachment, data: Vec<u8> },
+    SendChatFile {
+        text: String,
+        attachment: crate::files::ChatAttachment,
+        data: Vec<u8>,
+    },
     /// Fetch a received attachment's bytes from its sender over the file plane
     /// (used for on-demand file/chip downloads; images are auto-fetched on
     /// receipt). Replies with `AttachmentReady`/`AttachmentFailed`.
-    FetchAttachment { from: EndpointId, attachment: crate::files::ChatAttachment },
+    FetchAttachment {
+        from: EndpointId,
+        attachment: crate::files::ChatAttachment,
+    },
     /// Register `data` as fetchable under `id` for room members (the current
     /// broadcast track). Called once per track when broadcasting.
-    ServeMusicTrack { id: crate::files::AttachmentId, data: std::sync::Arc<Vec<u8>> },
+    ServeMusicTrack {
+        id: crate::files::AttachmentId,
+        data: std::sync::Arc<Vec<u8>>,
+    },
     /// Drop a music blob that is no longer current-or-next.
     ForgetMusicTrack(crate::files::AttachmentId),
     /// Set (or clear) our broadcast music timeline and re-announce presence.
     SetMusicPresence(Option<crate::network::MusicPresence>),
     /// Fetch a source peer's current track bytes after tuning into them.
-    FetchMusic { from: EndpointId, id: crate::files::AttachmentId, size: u64 },
+    FetchMusic {
+        from: EndpointId,
+        id: crate::files::AttachmentId,
+        size: u64,
+    },
     /// Fetch a source peer's advertised next track bytes before it becomes current.
-    PrefetchMusic { from: EndpointId, id: crate::files::AttachmentId, size: u64 },
+    PrefetchMusic {
+        from: EndpointId,
+        id: crate::files::AttachmentId,
+        size: u64,
+    },
     /// Set the pixelpass binary location (config override, empty = use `$PATH`).
     /// Sent at startup so screen-share can resolve the binary.
     SetPixelpassPath(Option<String>),
@@ -84,7 +113,9 @@ pub enum CoreCommand {
     /// `audio_app` selects which app's audio to capture: `Some(name)` captures
     /// only that app (avoiding the call-loopback echo, A23); `None` shares the
     /// whole desktop audio (the legacy behavior).
-    StartScreenShare { audio_app: Option<String> },
+    StartScreenShare {
+        audio_app: Option<String>,
+    },
     /// Stop sharing our screen: kill the pixelpass host and clear the presence
     /// ticket. No-op when not sharing.
     StopScreenShare,
@@ -98,7 +129,11 @@ pub enum CoreCommand {
     /// Add a friend (W7). Core owns the friends store: it mutates + persists it and
     /// replies with [`UiEvent::FriendsUpdated`]. `addr` seeds `last_addr` if known
     /// (e.g. added from a room). Idempotent — re-adding an existing id is a no-op.
-    AddFriend { id: EndpointId, name: String, addr: Option<EndpointAddr> },
+    AddFriend {
+        id: EndpointId,
+        name: String,
+        addr: Option<EndpointAddr>,
+    },
     /// Remove a friend by id (W7).
     RemoveFriend(EndpointId),
     /// Locally rename a friend (W7).
@@ -189,10 +224,7 @@ pub fn delivery_class(cmd: &CoreCommand) -> DeliveryClass {
             from: _,
             attachment: _,
         }
-        | CoreCommand::ServeMusicTrack {
-            id: _,
-            data: _,
-        }
+        | CoreCommand::ServeMusicTrack { id: _, data: _ }
         | CoreCommand::ForgetMusicTrack(_)
         | CoreCommand::SetMusicPresence(_)
         | CoreCommand::FetchMusic {
@@ -272,10 +304,7 @@ pub fn coalesce_key(cmd: &CoreCommand) -> Option<CoalesceKey> {
             from: _,
             attachment: _,
         }
-        | CoreCommand::ServeMusicTrack {
-            id: _,
-            data: _,
-        }
+        | CoreCommand::ServeMusicTrack { id: _, data: _ }
         | CoreCommand::ForgetMusicTrack(_)
         | CoreCommand::SetMusicPresence(_)
         | CoreCommand::FetchMusic {
@@ -311,55 +340,106 @@ pub fn coalesce_key(cmd: &CoreCommand) -> Option<CoalesceKey> {
 
 #[derive(Debug, Clone)]
 pub enum UiEvent {
-    RoomJoined { ticket: String, self_id: String },
+    RoomJoined {
+        ticket: String,
+        self_id: String,
+    },
     RoomLeft,
     /// Clear room-scoped UI state after a failed in-call room switch, without a
     /// leave chime. The persistent identity remains unchanged.
     RoomReset,
-    PeerJoined { id: EndpointId, state: PeerState },
-    PeerLeft { id: EndpointId },
+    PeerJoined {
+        id: EndpointId,
+        state: PeerState,
+    },
+    PeerLeft {
+        id: EndpointId,
+    },
     /// The fixed reconnect grace expired and bounded background gossip recovery
     /// has started. This is non-terminal and must not play the failure chime.
-    PeerRecoveryStarted { id: EndpointId },
-    PeerConnectionFailed { id: EndpointId },
-    PeerUpdated { id: EndpointId, state: PeerState },
+    PeerRecoveryStarted {
+        id: EndpointId,
+    },
+    PeerConnectionFailed {
+        id: EndpointId,
+    },
+    PeerUpdated {
+        id: EndpointId,
+        state: PeerState,
+    },
     /// Audio link to a peer is being (re)established — show a connecting state.
-    PeerConnecting { id: EndpointId },
+    PeerConnecting {
+        id: EndpointId,
+    },
     /// Audio link to a peer is up and carrying audio.
-    PeerConnected { id: EndpointId },
+    PeerConnected {
+        id: EndpointId,
+    },
     AudioLevels(Vec<(EndpointId, f32)>),
     /// Raw (pre-gate, pre-mute) normalized RMS of the local mic, `0.0..=1.0`,
     /// for the settings level meter. Throttled to ~10/sec.
     MicLevel(f32),
     /// Call recording started; carries the absolute WAV path being written.
-    RecordingStarted { path: String },
+    RecordingStarted {
+        path: String,
+    },
     /// Call recording stopped; carries the finished WAV path.
-    RecordingStopped { path: String },
+    RecordingStopped {
+        path: String,
+    },
     /// A room text-chat message arrived from a peer (never our own — local
     /// messages are echoed by the UI on send). `from` is the sender's node id
     /// string, used to key their avatar (W4).
-    ChatMessage { from: String, name: String, text: String, attachment: Option<crate::files::ChatAttachment> },
+    ChatMessage {
+        from: String,
+        name: String,
+        text: String,
+        attachment: Option<crate::files::ChatAttachment>,
+    },
     /// An attachment's bytes are now available (auto-fetched for images, or
     /// fetched on demand for files). Keyed by `(from, id)`: the id is
     /// attacker-chosen, so a malicious peer can reuse a victim's id — the author
     /// disambiguates whose bytes these are and stops content aliasing (Tier C
     /// F-12).
-    AttachmentReady { from: EndpointId, id: crate::files::AttachmentId, data: Vec<u8> },
+    AttachmentReady {
+        from: EndpointId,
+        id: crate::files::AttachmentId,
+        data: Vec<u8>,
+    },
     /// An attachment fetch failed (sender gone, too large, decode error, etc.).
-    AttachmentFailed { from: EndpointId, id: crate::files::AttachmentId, error: String },
+    AttachmentFailed {
+        from: EndpointId,
+        id: crate::files::AttachmentId,
+        error: String,
+    },
     /// A tuned-in source's track bytes arrived; play them in the music sink.
-    MusicReady { from: EndpointId, id: crate::files::AttachmentId, data: Vec<u8> },
+    MusicReady {
+        from: EndpointId,
+        id: crate::files::AttachmentId,
+        data: Vec<u8>,
+    },
     /// A tuned-in source's next-track bytes arrived; cache them for a gapless swap.
-    MusicPrefetched { from: EndpointId, id: crate::files::AttachmentId, data: Vec<u8> },
+    MusicPrefetched {
+        from: EndpointId,
+        id: crate::files::AttachmentId,
+        data: Vec<u8>,
+    },
     /// A music-track fetch failed (source gone, too large, etc.).
-    MusicFetchFailed { from: EndpointId, id: crate::files::AttachmentId, error: String },
+    MusicFetchFailed {
+        from: EndpointId,
+        id: crate::files::AttachmentId,
+        error: String,
+    },
     /// The apps currently producing audio, for the screen-share audio picker
     /// (A23). Sorted, deduplicated `application.name`s; empty when nothing is
     /// playing or enumeration isn't available. `app_audio_supported` reports
     /// whether the resolved pixelpass understands `--strict-audio`: when `false`
     /// (an older pixelpass) the picker must offer whole-desktop audio only, since
     /// a per-app share would pass a flag that older binary rejects (audit P2).
-    AudioAppsListed { apps: Vec<String>, app_audio_supported: bool },
+    AudioAppsListed {
+        apps: Vec<String>,
+        app_audio_supported: bool,
+    },
     /// Our own screen share started; the UI flips the Share button to "Stop".
     ScreenShareStarted,
     /// Our own screen share stopped (or failed to start).
@@ -372,24 +452,37 @@ pub enum UiEvent {
     /// A validly signed peer cannot be admitted because its gossip timestamp is
     /// outside the replay freshness window. `peer_ahead` describes the peer's
     /// sender-stamped timestamp relative to this machine's clock.
-    ClockSkewWarning { skew_secs: u64, peer_ahead: bool },
+    ClockSkewWarning {
+        skew_secs: u64,
+        peer_ahead: bool,
+    },
     /// Our node identity (W7): the current node id string, and whether it is
     /// PERSISTED to disk. Sent once at startup and again after a regenerate.
     /// `persisted = false` means the key file couldn't be read/written and we're
     /// running on an ephemeral fallback — a degraded state the UI must surface,
     /// since the id (and thus friend recognition) won't survive the next launch.
     /// `error` carries the reason when degraded, for the UI explainer.
-    IdentityStatus { node_id: String, persisted: bool, error: Option<String> },
+    IdentityStatus {
+        node_id: String,
+        persisted: bool,
+        error: Option<String>,
+    },
     /// The friends list (W7), now owned by core. Sent at startup (after load) and
     /// after every add/remove/rename so the GUI renders from this snapshot instead
     /// of owning the store. `read_only` is true when `friends.json` failed to load
     /// (malformed) — the GUI shows a degraded warning and disables edits so we never
     /// overwrite the damaged file (backlog A16).
-    FriendsUpdated { friends: Vec<Friend>, read_only: bool },
+    FriendsUpdated {
+        friends: Vec<Friend>,
+        read_only: bool,
+    },
     /// A friend's live presence from a successful ping reply (W7): online, or in a
     /// joinable gathering (with a one-click ticket). Emitted by the outbound ping
     /// scheduler; absence of a recent event = treat as offline.
-    FriendPresence { id: EndpointId, presence: FriendPresence },
+    FriendPresence {
+        id: EndpointId,
+        presence: FriendPresence,
+    },
     /// A manual "Rescan" pass finished (every friend has been probed and its
     /// per-friend `FriendPresence` already emitted). Lets the GUI clear the
     /// transient "Rescanning…" status. Sent only for the on-demand button, not the
@@ -399,7 +492,9 @@ pub enum UiEvent {
     /// time-box elapsed and the core auto-reverted to `Normal`; on discovery apply
     /// failure, this carries the previous truthful mode. The GUI must mirror +
     /// persist this so its presence picker matches the endpoint's discovery state.
-    PresenceModeReverted { mode: PresenceMode },
+    PresenceModeReverted {
+        mode: PresenceMode,
+    },
     /// The locally-detected running game changed (game detection). Carries the
     /// debounced `DetectedGame` (id + display name + source) or `None` when nothing
     /// is detected. The GUI uses the stable `id` to switch the per-game background
@@ -413,7 +508,7 @@ pub enum UiEvent {
 
 #[cfg(test)]
 mod tests {
-    use super::{coalesce_key, delivery_class, CoalesceKey, CoreCommand, DeliveryClass};
+    use super::{CoalesceKey, CoreCommand, DeliveryClass, coalesce_key, delivery_class};
     use crate::audio::eq::EqSettings;
     use crate::presence::PresenceMode;
     use iroh::{EndpointId, SecretKey};

src/core/mod.rs

@@ -1,31 +1,33 @@
-pub mod messages;
 pub mod jitter;
+pub mod messages;
 mod recovery;
 
-use crate::audio::{AudioBackend, PlatformAudioBackend};
 use crate::audio::eq::{Eq, EqSettings};
+use crate::audio::{AudioBackend, PlatformAudioBackend};
 use crate::codec::{AudioEncoder, opus_impl::OpusEncoder};
-use crate::core::jitter::{JitterBuffer, FRAME_SAMPLES};
-use crate::network::{
-    NetworkTransport, RoomState, SelfPresence, RoomEvent, ConnEvent, PeerSpeakTicket,
-    iroh_impl::{IrohTransport, AudioRouter, FileRouter},
-    gossip::IrohGossipState,
-};
+use crate::core::jitter::{FRAME_SAMPLES, JitterBuffer};
 use crate::core::messages::{
     CoalesceKey, CoreCommand, DeliveryClass, UiEvent, coalesce_key, delivery_class,
 };
 use crate::core::recovery::RecoveryCoordinator;
+use crate::network::{
+    ConnEvent, NetworkTransport, PeerSpeakTicket, RoomEvent, RoomState, SelfPresence,
+    gossip::IrohGossipState,
+    iroh_impl::{AudioRouter, FileRouter, IrohTransport},
+};
 
+use crate::audio::multitrack::MultitrackRecorder;
 use crate::config::{NetworkMode, RecordingMode};
 use crate::presence::PresenceMode;
-use crate::audio::multitrack::MultitrackRecorder;
-use iroh::{Endpoint, EndpointAddr, EndpointId, RelayMode, SecretKey, endpoint::presets, protocol::Router};
+use iroh::{
+    Endpoint, EndpointAddr, EndpointId, RelayMode, SecretKey, endpoint::presets, protocol::Router,
+};
 use iroh_gossip::net::Gossip;
-use tokio::sync::{mpsc, Mutex};
 use std::collections::{HashMap, HashSet};
-use std::sync::{Arc, Mutex as StdMutex};
 use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
+use std::sync::{Arc, Mutex as StdMutex};
 use std::time::Duration;
+use tokio::sync::{Mutex, mpsc};
 
 type CoalesceStore = Arc<StdMutex<HashMap<CoalesceKey, CoreCommand>>>;
 
@@ -205,8 +207,7 @@ type GraceTimers = Arc<std::sync::Mutex<HashMap<EndpointId, tokio::task::JoinHan
 /// Scrubbed whenever a peer is evicted or leaves so a later rejoin starts clean.
 type SeenConnected = Arc<std::sync::Mutex<HashSet<EndpointId>>>;
 
-type KnownPeers =
-    Arc<std::sync::Mutex<HashMap<[u8; 32], HashMap<EndpointId, EndpointAddr>>>>;
+type KnownPeers = Arc<std::sync::Mutex<HashMap<[u8; 32], HashMap<EndpointId, EndpointAddr>>>>;
 
 /// Per-topic cap on the retained rejoin-bootstrap / recovery target table
 /// (Tier C recovery-identity cap). Set comfortably above the live-roster cap
@@ -322,7 +323,9 @@ fn arm_grace_timer(
         seen_evict.lock().unwrap().remove(&peer_id);
 
         let Some(recovery) = recovery_evict else {
-            let _ = ui_evict.send(UiEvent::PeerConnectionFailed { id: peer_id }).await;
+            let _ = ui_evict
+                .send(UiEvent::PeerConnectionFailed { id: peer_id })
+                .await;
             return;
         };
         if !recovery.coordinator.is_active(&peer_id) {
@@ -335,13 +338,17 @@ fn arm_grace_timer(
                 peer_id
             ));
             recovery.cancel(peer_id);
-            let _ = ui_evict.send(UiEvent::PeerConnectionFailed { id: peer_id }).await;
+            let _ = ui_evict
+                .send(UiEvent::PeerConnectionFailed { id: peer_id })
+                .await;
             return;
         };
 
         match recovery.coordinator.activate(peer_id, addr) {
             Ok(true) => {
-                let _ = ui_evict.send(UiEvent::PeerRecoveryStarted { id: peer_id }).await;
+                let _ = ui_evict
+                    .send(UiEvent::PeerRecoveryStarted { id: peer_id })
+                    .await;
             }
             Ok(false) => {}
             Err(()) => {
@@ -349,7 +356,9 @@ fn arm_grace_timer(
                     "Cannot recover peer {:?}: recovery coordinator unavailable",
                     peer_id
                 ));
-                let _ = ui_evict.send(UiEvent::PeerConnectionFailed { id: peer_id }).await;
+                let _ = ui_evict
+                    .send(UiEvent::PeerConnectionFailed { id: peer_id })
+                    .await;
             }
         }
     });
@@ -370,11 +379,7 @@ fn apply_volume(frame: &mut [i16], vol: f32) {
 
 /// Apply the listener's per-peer volume for the audio sender id currently being
 /// mixed. The map key must be the same `EndpointId` used for the jitter buffer.
-fn apply_peer_volume(
-    frame: &mut [i16],
-    peer_id: EndpointId,
-    volumes: &HashMap<EndpointId, f32>,
-) {
+fn apply_peer_volume(frame: &mut [i16], peer_id: EndpointId, volumes: &HashMap<EndpointId, f32>) {
     let vol = volumes.get(&peer_id).copied().unwrap_or(1.0);
     apply_volume(frame, vol);
 }
@@ -670,7 +675,8 @@ impl ActiveSession {
             crate::log_msg("Stopping audio backend...");
             let _ = audio_backend_clone.stop();
             crate::log_msg("Audio backend stopped");
-        }).await;
+        })
+        .await;
 
         // Unload the echo-cancel module now that the audio streams releasing its
         // virtual nodes have stopped. (Dropping the guard runs `pactl unload`.)
@@ -744,7 +750,8 @@ fn apply_discovery(
     plan: crate::discovery::LookupPlan,
 ) -> Result<(), anyhow::Error> {
     use iroh::address_lookup::{
-        AddressLookupBuilder, dns::DnsAddressLookup,
+        AddressLookupBuilder,
+        dns::DnsAddressLookup,
         pkarr::{PkarrPublisher, PkarrResolver},
     };
     let services = endpoint.address_lookup()?;
@@ -810,7 +817,11 @@ async fn build_net_stack(
         .await?;
 
     // Install the n0 DNS services for the current (mode, publish) posture.
-    apply_discovery(&endpoint, &memory_lookup, crate::discovery::lookup_plan(network_mode, publish))?;
+    apply_discovery(
+        &endpoint,
+        &memory_lookup,
+        crate::discovery::lookup_plan(network_mode, publish),
+    )?;
 
     // Bring the endpoint online in the background so launch isn't blocked on the
     // relay handshake; joins/sends just work once it's up (online() is idempotent).
@@ -862,8 +873,7 @@ const MAX_INFLIGHT_ATTACHMENT_FETCHES: usize = 4;
 
 /// In-flight `(author, attachment_id)` markers for bounded, deduplicated auto-
 /// fetches (Tier C F-02). Bounded by [`MAX_INFLIGHT_ATTACHMENT_FETCHES`].
-type InflightAttachments =
-    Arc<std::sync::Mutex<HashSet<(EndpointId, crate::files::AttachmentId)>>>;
+type InflightAttachments = Arc<std::sync::Mutex<HashSet<(EndpointId, crate::files::AttachmentId)>>>;
 
 /// RAII bookkeeping for one bounded auto-fetch: holds the concurrency permit for
 /// the task's lifetime and clears the in-flight `(author, id)` marker when the
@@ -921,12 +931,20 @@ fn spawn_attachment_fetch(
                     return;
                 }
                 let _ = ui_tx
-                    .send(UiEvent::AttachmentReady { from, id: att.id, data })
+                    .send(UiEvent::AttachmentReady {
+                        from,
+                        id: att.id,
+                        data,
+                    })
                     .await;
             }
             Err(e) => {
                 let _ = ui_tx
-                    .send(UiEvent::AttachmentFailed { from, id: att.id, error: e.to_string() })
+                    .send(UiEvent::AttachmentFailed {
+                        from,
+                        id: att.id,
+                        error: e.to_string(),
+                    })
                     .await;
             }
         }
@@ -943,13 +961,15 @@ fn spawn_music_fetch(
     tokio::spawn(async move {
         match transport.fetch_blob(from, id, size).await {
             Ok(data) => {
-                let _ = ui_tx
-                    .send(UiEvent::MusicReady { from, id, data })
-                    .await;
+                let _ = ui_tx.send(UiEvent::MusicReady { from, id, data }).await;
             }
             Err(e) => {
                 let _ = ui_tx
-                    .send(UiEvent::MusicFetchFailed { from, id, error: e.to_string() })
+                    .send(UiEvent::MusicFetchFailed {
+                        from,
+                        id,
+                        error: e.to_string(),
+                    })
                     .await;
             }
         }
@@ -972,7 +992,11 @@ fn spawn_music_prefetch(
             }
             Err(e) => {
                 let _ = ui_tx
-                    .send(UiEvent::MusicFetchFailed { from, id, error: e.to_string() })
+                    .send(UiEvent::MusicFetchFailed {
+                        from,
+                        id,
+                        error: e.to_string(),
+                    })
                     .await;
             }
         }
@@ -1024,13 +1048,14 @@ async fn persist_and_emit_friends(
     ui_tx: &mpsc::Sender<UiEvent>,
 ) {
     let store = friends.lock().unwrap().clone();
-    if !read_only
-        && let Err(e) = crate::friends::save(&store)
-    {
+    if !read_only && let Err(e) = crate::friends::save(&store) {
         crate::log_msg(&format!("friends: save failed: {e:#}"));
     }
     let _ = ui_tx
-        .send(UiEvent::FriendsUpdated { friends: store.friends, read_only })
+        .send(UiEvent::FriendsUpdated {
+            friends: store.friends,
+            read_only,
+        })
         .await;
 }
 
@@ -1063,7 +1088,10 @@ async fn probe_friends_once(
         let Some(addr) = f.last_addr.clone() else {
             // Nothing to dial yet — report Offline so a prior status can't stick.
             let _ = ui_tx
-                .send(UiEvent::FriendPresence { id, presence: crate::presence::FriendPresence::Offline })
+                .send(UiEvent::FriendPresence {
+                    id,
+                    presence: crate::presence::FriendPresence::Offline,
+                })
                 .await;
             continue;
         };
@@ -1215,7 +1243,9 @@ async fn run_core_loop(
     let friends = Arc::new(std::sync::Mutex::new(initial_friends));
     // Our presence posture, shared with the listener + scheduler. The GUI pushes it
     // at startup + on change via SetPresenceMode; persistence stays in AppConfig.
-    let presence_mode = Arc::new(std::sync::Mutex::new(crate::presence::PresenceMode::default()));
+    let presence_mode = Arc::new(std::sync::Mutex::new(
+        crate::presence::PresenceMode::default(),
+    ));
     // The gathering we're currently in (its restamped member ticket + label), so the
     // listener can offer friends a one-click Join. `None` when not in a call. Set on
     // Join, cleared on Leave.
@@ -1248,7 +1278,15 @@ async fn run_core_loop(
     // rebuilt only when the network mode or identity changes. Moving `memory_lookup`
     // in — all later access is via `net.memory_lookup`.
     let initial_publish = presence_mode.lock().unwrap().publishes_to_discovery();
-    let mut net = match build_net_stack(secret_key.clone(), network_mode, memory_lookup, friends_handler.clone(), initial_publish).await {
+    let mut net = match build_net_stack(
+        secret_key.clone(),
+        network_mode,
+        memory_lookup,
+        friends_handler.clone(),
+        initial_publish,
+    )
+    .await
+    {
         Ok(stack) => stack,
         Err(e) => {
             // Only a local socket bind can fail here (the relay handshake is
@@ -1421,7 +1459,14 @@ async fn run_core_loop(
             CoreCommand::Shutdown => {
                 crate::log_msg("Core shutdown requested");
                 // Finalize recordings while capture/mixer feeders are still alive.
-                stop_recording(&recorder, &is_recording, &multitrack, &is_multitrack, &ui_tx).await;
+                stop_recording(
+                    &recorder,
+                    &is_recording,
+                    &multitrack,
+                    &is_multitrack,
+                    &ui_tx,
+                )
+                .await;
                 stop_mic_monitor(&audio_backend, mic_monitor.take());
 
                 if let Some(session) = active_session.take() {
@@ -1436,14 +1481,29 @@ async fn run_core_loop(
                 break;
             }
 
-            CoreCommand::Join { name, ticket, room_name, input_device, output_device, echo_cancellation, avatar } => {
+            CoreCommand::Join {
+                name,
+                ticket,
+                room_name,
+                input_device,
+                output_device,
+                echo_cancellation,
+                avatar,
+            } => {
                 presence.name = name.clone();
                 presence.avatar = avatar;
                 let was_in_room = active_session.is_some();
 
                 // Finalize any recording before tearing down the old session — its
                 // capture/mixer feeders are about to stop.
-                stop_recording(&recorder, &is_recording, &multitrack, &is_multitrack, &ui_tx).await;
+                stop_recording(
+                    &recorder,
+                    &is_recording,
+                    &multitrack,
+                    &is_multitrack,
+                    &ui_tx,
+                )
+                .await;
 
                 // Clean up any existing session FIRST (this calls `transport.leave()`
                 // on the current endpoint), before any stack rebuild closes it.
@@ -1462,7 +1522,14 @@ async fn run_core_loop(
                     let lookup = net.memory_lookup.clone();
                     net.shutdown().await;
                     let publish = presence_mode.lock().unwrap().publishes_to_discovery();
-                    net = build_net_stack(secret_key.clone(), network_mode, lookup, friends_handler.clone(), publish).await?;
+                    net = build_net_stack(
+                        secret_key.clone(),
+                        network_mode,
+                        lookup,
+                        friends_handler.clone(),
+                        publish,
+                    )
+                    .await?;
                     net_rebuild_pending = false;
                 }
 
@@ -1492,7 +1559,11 @@ async fn run_core_loop(
                     // The creator's chosen cosmetic label rides in the ticket so
                     // every joiner inherits it; sanitize it before it leaves here.
                     let label = crate::sanitize::sanitize_name(&room_name);
-                    let ticket = PeerSpeakTicket { host_addr, topic_id, name: label };
+                    let ticket = PeerSpeakTicket {
+                        host_addr,
+                        topic_id,
+                        name: label,
+                    };
                     ticket.to_string()
                 } else {
                     let ticket_str = ticket.trim().to_string();
@@ -1509,7 +1580,9 @@ async fn run_core_loop(
                         if was_in_room {
                             let _ = ui_tx.send(UiEvent::RoomReset).await;
                         }
-                        let _ = ui_tx.send(UiEvent::Error("invalid room ticket".to_string())).await;
+                        let _ = ui_tx
+                            .send(UiEvent::Error("invalid room ticket".to_string()))
+                            .await;
                         continue;
                     }
                 };
@@ -1531,11 +1604,8 @@ async fn run_core_loop(
 
                 // Fresh join starts not sharing; clear any stale share ticket.
                 current_sharing = None;
-                let self_state = presence.to_state(
-                    is_muted.load(Ordering::Relaxed),
-                    endpoint.addr(),
-                    None,
-                );
+                let self_state =
+                    presence.to_state(is_muted.load(Ordering::Relaxed), endpoint.addr(), None);
 
                 // Snapshot THIS room's retained peers (by topic) as extra bootstrap
                 // targets so a rejoin can dial them (A8) — including after a detour
@@ -1559,12 +1629,17 @@ async fn run_core_loop(
                     self_state.sharing.is_some(),
                     extra_bootstrap_ids
                 ));
-                if let Err(e) = room_state.join(&ticket_str, self_state.clone(), extra_bootstrap).await {
+                if let Err(e) = room_state
+                    .join(&ticket_str, self_state.clone(), extra_bootstrap)
+                    .await
+                {
                     crate::log_msg(&format!("Error room_state.join failed: {:?}", e));
                     if was_in_room {
                         let _ = ui_tx.send(UiEvent::RoomReset).await;
                     }
-                    let _ = ui_tx.send(UiEvent::Error(format!("Failed to join room: {}", e))).await;
+                    let _ = ui_tx
+                        .send(UiEvent::Error(format!("Failed to join room: {}", e)))
+                        .await;
                     net.audio_router.clear();
                     net.file_router.clear();
                     continue;
@@ -1601,7 +1676,9 @@ async fn run_core_loop(
                                 "Echo cancellation unavailable, using direct devices: {e}"
                             ));
                             let _ = ui_tx
-                                .send(UiEvent::Error(format!("Echo cancellation unavailable: {e}")))
+                                .send(UiEvent::Error(format!(
+                                    "Echo cancellation unavailable: {e}"
+                                )))
                                 .await;
                             (input_device.clone(), output_device.clone())
                         }
@@ -1612,13 +1689,16 @@ async fn run_core_loop(
                 #[cfg(not(target_os = "linux"))]
                 let _ = echo_cancellation;
                 #[cfg(not(target_os = "linux"))]
-                let (capture_target, playback_target) = (input_device.clone(), output_device.clone());
+                let (capture_target, playback_target) =
+                    (input_device.clone(), output_device.clone());
 
                 if let Err(e) = audio_backend.start_capture(capture_tx, capture_target) {
                     if was_in_room {
                         let _ = ui_tx.send(UiEvent::RoomReset).await;
                     }
-                    let _ = ui_tx.send(UiEvent::Error(format!("Failed to start capture: {}", e))).await;
+                    let _ = ui_tx
+                        .send(UiEvent::Error(format!("Failed to start capture: {}", e)))
+                        .await;
                     let _ = room_state.leave().await;
                     net.audio_router.clear();
                     net.file_router.clear();
@@ -1629,11 +1709,15 @@ async fn run_core_loop(
                 // here (drain side + fill side); the mixer reads it to pace
                 // production to the hardware clock instead of a fixed timer.
                 let ring_fill = Arc::new(AtomicUsize::new(0));
-                if let Err(e) = audio_backend.start_playback(playback_rx, playback_target, ring_fill.clone()) {
+                if let Err(e) =
+                    audio_backend.start_playback(playback_rx, playback_target, ring_fill.clone())
+                {
                     if was_in_room {
                         let _ = ui_tx.send(UiEvent::RoomReset).await;
                     }
-                    let _ = ui_tx.send(UiEvent::Error(format!("Failed to start playback: {}", e))).await;
+                    let _ = ui_tx
+                        .send(UiEvent::Error(format!("Failed to start playback: {}", e)))
+                        .await;
                     let _ = audio_backend.stop();
                     let _ = room_state.leave().await;
                     net.audio_router.clear();
@@ -1641,7 +1725,8 @@ async fn run_core_loop(
                     continue;
                 }
 
-                let jitter: Arc<Mutex<HashMap<EndpointId, JitterBuffer>>> = Arc::new(Mutex::new(HashMap::new()));
+                let jitter: Arc<Mutex<HashMap<EndpointId, JitterBuffer>>> =
+                    Arc::new(Mutex::new(HashMap::new()));
 
                 // 1. Capture & encoding thread
                 let is_muted_clone = is_muted.clone();
@@ -1657,14 +1742,15 @@ async fn run_core_loop(
                 let is_multitrack_capture = is_multitrack.clone();
 
                 let capture_thread = std::thread::spawn(move || {
-                    use opus::{Channels, Application};
-                    let mut encoder = match OpusEncoder::new(48000, Channels::Mono, Application::Voip) {
-                        Ok(enc) => enc,
-                        Err(e) => {
-                            crate::log_msg(&format!("Capture thread error: {:?}", e));
-                            return;
-                        }
-                    };
+                    use opus::{Application, Channels};
+                    let mut encoder =
+                        match OpusEncoder::new(48000, Channels::Mono, Application::Voip) {
+                            Ok(enc) => enc,
+                            Err(e) => {
+                                crate::log_msg(&format!("Capture thread error: {:?}", e));
+                                return;
+                            }
+                        };
                     // Per-sender packet sequence number, prepended to every frame so
                     // receivers can reorder and conceal loss. Wraps after ~years.
                     let mut seq: u32 = 0;
@@ -1679,7 +1765,10 @@ async fn run_core_loop(
                     while let Ok(mut pcm) = capture_rx.recv() {
                         // Apply the input gain first so the meter, gate, and what we
                         // transmit all reflect the same (gained) signal.
-                        apply_volume(&mut pcm, f32::from_bits(input_gain_clone.load(Ordering::Relaxed)));
+                        apply_volume(
+                            &mut pcm,
+                            f32::from_bits(input_gain_clone.load(Ordering::Relaxed)),
+                        );
 
                         if let Some(peak) = mic_meter.push(&pcm) {
                             let _ = ui_tx_capture.try_send(UiEvent::MicLevel(peak));
@@ -1688,7 +1777,9 @@ async fn run_core_loop(
                         if is_muted_clone.load(Ordering::Relaxed) {
                             continue;
                         }
-                        if ptt_mode_clone.load(Ordering::Relaxed) && !ptt_active_clone.load(Ordering::Relaxed) {
+                        if ptt_mode_clone.load(Ordering::Relaxed)
+                            && !ptt_active_clone.load(Ordering::Relaxed)
+                        {
                             continue;
                         }
 
@@ -1757,7 +1848,10 @@ async fn run_core_loop(
                                 match JitterBuffer::new() {
                                     Ok(jb) => entry.insert(jb),
                                     Err(e) => {
-                                        crate::log_msg(&format!("Failed to init jitter buffer for {:?}: {:?}", from_peer, e));
+                                        crate::log_msg(&format!(
+                                            "Failed to init jitter buffer for {:?}: {:?}",
+                                            from_peer, e
+                                        ));
                                         continue;
                                     }
                                 }
@@ -1819,7 +1913,9 @@ async fn run_core_loop(
                     loop {
                         // Pace to the hardware clock: only produce while the ring
                         // is draining below target. Otherwise yield and re-check.
-                        if ring_fill_mixer.load(Ordering::Relaxed) >= crate::audio::PLAYBACK_TARGET_SAMPLES {
+                        if ring_fill_mixer.load(Ordering::Relaxed)
+                            >= crate::audio::PLAYBACK_TARGET_SAMPLES
+                        {
                             tokio::time::sleep(IDLE_NAP).await;
                             continue;
                         }
@@ -1915,9 +2011,11 @@ async fn run_core_loop(
                                 peer_frames.push((frame, pan));
                             }
                         }
-                        peer_eqs.retain(|id, _| peers_seen.contains(id) || current_eq.contains_key(id));
-                        peer_noise_gates
-                            .retain(|id, _| peers_seen.contains(id) || current_gates.contains_key(id));
+                        peer_eqs
+                            .retain(|id, _| peers_seen.contains(id) || current_eq.contains_key(id));
+                        peer_noise_gates.retain(|id, _| {
+                            peers_seen.contains(id) || current_gates.contains_key(id)
+                        });
 
                         // Lossless i32 sum, then the limiter applies the master
                         // output gain (in f32, so a boost past the ceiling is
@@ -1954,7 +2052,8 @@ async fn run_core_loop(
                                     &multitrack_mixer,
                                     &is_multitrack_mixer,
                                     &ui_tx_mixer,
-                                ).await;
+                                )
+                                .await;
                                 let _ = ui_tx_mixer
                                     .send(UiEvent::Error(format!(
                                         "Recording stopped — write failed: {e}"
@@ -1977,7 +2076,8 @@ async fn run_core_loop(
                                     &multitrack_mixer,
                                     &is_multitrack_mixer,
                                     &ui_tx_mixer,
-                                ).await;
+                                )
+                                .await;
                                 let _ = ui_tx_mixer
                                     .send(UiEvent::Error(format!(
                                         "Recording stopped — write failed: {e}"
@@ -2013,7 +2113,9 @@ async fn run_core_loop(
                         if was_in_room {
                             let _ = ui_tx.send(UiEvent::RoomReset).await;
                         }
-                        let _ = ui_tx.send(UiEvent::Error(format!("Failed to subscribe events: {}", e))).await;
+                        let _ = ui_tx
+                            .send(UiEvent::Error(format!("Failed to subscribe events: {}", e)))
+                            .await;
                         continue;
                     }
                 };
@@ -2130,9 +2232,13 @@ async fn run_core_loop(
                                     && let Some(mt) = multitrack_events.lock().unwrap().as_mut()
                                     && let Err(e) = mt.add_peer(peer_id, &state.name)
                                 {
-                                    crate::log_msg(&format!("multitrack add_peer (join) failed: {e}"));
+                                    crate::log_msg(&format!(
+                                        "multitrack add_peer (join) failed: {e}"
+                                    ));
                                 }
-                                let _ = ui_tx_events.send(UiEvent::PeerJoined { id: peer_id, state }).await;
+                                let _ = ui_tx_events
+                                    .send(UiEvent::PeerJoined { id: peer_id, state })
+                                    .await;
                             }
                             RoomEvent::PeerLeft(peer_id) => {
                                 // Graceful leave — evict immediately.
@@ -2189,9 +2295,17 @@ async fn run_core_loop(
                                         ));
                                     }
                                 }
-                                let _ = ui_tx_events.send(UiEvent::PeerUpdated { id: peer_id, state }).await;
+                                let _ = ui_tx_events
+                                    .send(UiEvent::PeerUpdated { id: peer_id, state })
+                                    .await;
                             }
-                            RoomEvent::ChatMessage { from, name, text, ts: _, attachment } => {
+                            RoomEvent::ChatMessage {
+                                from,
+                                name,
+                                text,
+                                ts: _,
+                                attachment,
+                            } => {
                                 // Auto-fetch image attachments so they render inline
                                 // without a click; non-image files wait for an explicit
                                 // FetchAttachment (the "Save" chip). The descriptor was
@@ -2208,7 +2322,11 @@ async fn run_core_loop(
                                     let key = (from, att.id);
                                     let already_inflight =
                                         inflight_attachments.lock().unwrap().contains(&key);
-                                    if should_auto_fetch(is_image, roster.contains(&from), already_inflight) {
+                                    if should_auto_fetch(
+                                        is_image,
+                                        roster.contains(&from),
+                                        already_inflight,
+                                    ) {
                                         // Reserve the dedup slot, then a permit. If the
                                         // pool is exhausted, drop the auto-fetch (and the
                                         // dedup marker) — the descriptor still shows and
@@ -2238,12 +2356,14 @@ async fn run_core_loop(
                                         }
                                     }
                                 }
-                                let _ = ui_tx_events.send(UiEvent::ChatMessage {
-                                    from: from.to_string(),
-                                    name,
-                                    text,
-                                    attachment,
-                                }).await;
+                                let _ = ui_tx_events
+                                    .send(UiEvent::ChatMessage {
+                                        from: from.to_string(),
+                                        name,
+                                        text,
+                                        attachment,
+                                    })
+                                    .await;
                             }
                             RoomEvent::ClockSkewSuspected { author, skew_ms } => {
                                 crate::log_msg(&format!(
@@ -2267,7 +2387,9 @@ async fn run_core_loop(
                                 // rejoin (PeerJoined/PeerUpdated) or a transport
                                 // reconnect (ConnEvent::Connected) cancels it first.
                                 transport_events.keep_audio_sender_for_reconnect_grace(peer_id);
-                                let _ = ui_tx_events.send(UiEvent::PeerConnecting { id: peer_id }).await;
+                                let _ = ui_tx_events
+                                    .send(UiEvent::PeerConnecting { id: peer_id })
+                                    .await;
                                 arm_grace_timer(
                                     &grace_timers_events,
                                     &seen_connected_events,
@@ -2293,7 +2415,12 @@ async fn run_core_loop(
                         if was_in_room {
                             let _ = ui_tx.send(UiEvent::RoomReset).await;
                         }
-                        let _ = ui_tx.send(UiEvent::Error(format!("Failed to subscribe conn events: {}", e))).await;
+                        let _ = ui_tx
+                            .send(UiEvent::Error(format!(
+                                "Failed to subscribe conn events: {}",
+                                e
+                            )))
+                            .await;
                         continue;
                     }
                 };
@@ -2350,13 +2477,25 @@ async fn run_core_loop(
                     name: room_label,
                     ticket: share_ticket.clone(),
                 });
-                let _ = ui_tx.send(UiEvent::RoomJoined { ticket: share_ticket, self_id }).await;
+                let _ = ui_tx
+                    .send(UiEvent::RoomJoined {
+                        ticket: share_ticket,
+                        self_id,
+                    })
+                    .await;
                 active_session = Some(session);
             }
 
             CoreCommand::Leave => {
                 // Finalize any recording first, while the audio feeders are alive.
-                stop_recording(&recorder, &is_recording, &multitrack, &is_multitrack, &ui_tx).await;
+                stop_recording(
+                    &recorder,
+                    &is_recording,
+                    &multitrack,
+                    &is_multitrack,
+                    &ui_tx,
+                )
+                .await;
                 current_sharing = None;
                 if let Some(session) = active_session.take() {
                     session.shutdown(audio_backend.clone()).await;
@@ -2373,7 +2512,14 @@ async fn run_core_loop(
                     let lookup = net.memory_lookup.clone();
                     net.shutdown().await;
                     let publish = presence_mode.lock().unwrap().publishes_to_discovery();
-                    net = build_net_stack(secret_key.clone(), network_mode, lookup, friends_handler.clone(), publish).await?;
+                    net = build_net_stack(
+                        secret_key.clone(),
+                        network_mode,
+                        lookup,
+                        friends_handler.clone(),
+                        publish,
+                    )
+                    .await?;
                     net_rebuild_pending = false;
                 }
             }
@@ -2384,11 +2530,8 @@ async fn run_core_loop(
                 is_muted.store(new_state, Ordering::Relaxed);
 
                 if let Some(session) = &active_session {
-                    let self_state = presence.to_state(
-                        new_state,
-                        net.endpoint.addr(),
-                        current_sharing.clone(),
-                    );
+                    let self_state =
+                        presence.to_state(new_state, net.endpoint.addr(), current_sharing.clone());
                     let _ = session.room_state.update_self_state(self_state).await;
                 }
             }
@@ -2476,7 +2619,10 @@ async fn run_core_loop(
                 output_gain.store(vol.to_bits(), Ordering::Relaxed);
             }
 
-            CoreCommand::SetMicMonitor { enabled, input_device } => {
+            CoreCommand::SetMicMonitor {
+                enabled,
+                input_device,
+            } => {
                 // During a call the in-call capture thread already reports the
                 // mic level, and it owns the backend's capture stream — leave it be.
                 if active_session.is_some() {
@@ -2489,7 +2635,8 @@ async fn run_core_loop(
                             Ok(()) => {
                                 let ui = ui_tx.clone();
                                 let gain = input_gain.clone();
-                                let thread = std::thread::spawn(move || run_mic_monitor(rx, ui, gain));
+                                let thread =
+                                    std::thread::spawn(move || run_mic_monitor(rx, ui, gain));
                                 mic_monitor = Some(MicMonitor { thread });
                             }
                             Err(e) => {
@@ -2521,7 +2668,14 @@ async fn run_core_loop(
                         let lookup = net.memory_lookup.clone();
                         net.shutdown().await;
                         let publish = presence_mode.lock().unwrap().publishes_to_discovery();
-                        net = build_net_stack(secret_key.clone(), network_mode, lookup, friends_handler.clone(), publish).await?;
+                        net = build_net_stack(
+                            secret_key.clone(),
+                            network_mode,
+                            lookup,
+                            friends_handler.clone(),
+                            publish,
+                        )
+                        .await?;
                     } else {
                         net_rebuild_pending = true;
                     }
@@ -2555,7 +2709,14 @@ async fn run_core_loop(
                         let lookup = net.memory_lookup.clone();
                         net.shutdown().await;
                         let publish = presence_mode.lock().unwrap().publishes_to_discovery();
-                    net = build_net_stack(secret_key.clone(), network_mode, lookup, friends_handler.clone(), publish).await?;
+                        net = build_net_stack(
+                            secret_key.clone(),
+                            network_mode,
+                            lookup,
+                            friends_handler.clone(),
+                            publish,
+                        )
+                        .await?;
                     } else {
                         net_rebuild_pending = true;
                     }
@@ -2718,7 +2879,9 @@ async fn run_core_loop(
                                     .duration_since(std::time::UNIX_EPOCH)
                                     .map(|d| d.as_secs())
                                     .unwrap_or(0);
-                                let result: Result<String, String> = if recording_mode.is_multitrack() {
+                                let result: Result<String, String> = if recording_mode
+                                    .is_multitrack()
+                                {
                                     // Multitrack/Both: a per-session directory of stems.
                                     std::fs::create_dir_all(&base)
                                         .map_err(|e| e.to_string())
@@ -2740,7 +2903,9 @@ async fn run_core_loop(
                                             if let Some(session) = &active_session {
                                                 for (id, st) in session.room_state.active_peers() {
                                                     if let Err(e) = mt.add_peer(id, &st.name) {
-                                                        crate::log_msg(&format!("multitrack add_peer failed: {e}"));
+                                                        crate::log_msg(&format!(
+                                                            "multitrack add_peer failed: {e}"
+                                                        ));
                                                     }
                                                 }
                                             }
@@ -2766,10 +2931,11 @@ async fn run_core_loop(
                                 match result {
                                     Ok(path) => {
                                         is_recording.store(true, Ordering::Relaxed);
-                                        crate::log_msg(&format!("Recording started ({recording_mode:?}): {path}"));
-                                        let _ = ui_tx
-                                            .send(UiEvent::RecordingStarted { path })
-                                            .await;
+                                        crate::log_msg(&format!(
+                                            "Recording started ({recording_mode:?}): {path}"
+                                        ));
+                                        let _ =
+                                            ui_tx.send(UiEvent::RecordingStarted { path }).await;
                                     }
                                     Err(e) => {
                                         let _ = ui_tx
@@ -2786,7 +2952,14 @@ async fn run_core_loop(
                         }
                     }
                 } else {
-                    stop_recording(&recorder, &is_recording, &multitrack, &is_multitrack, &ui_tx).await;
+                    stop_recording(
+                        &recorder,
+                        &is_recording,
+                        &multitrack,
+                        &is_multitrack,
+                        &ui_tx,
+                    )
+                    .await;
                 }
             }
 
@@ -2798,7 +2971,11 @@ async fn run_core_loop(
                 }
             }
 
-            CoreCommand::SendChatFile { text, attachment, data } => {
+            CoreCommand::SendChatFile {
+                text,
+                attachment,
+                data,
+            } => {
                 if let Some(session) = &active_session {
                     // Make the bytes fetchable by room members, then broadcast the
                     // descriptor alongside the (possibly empty) caption text.
@@ -2853,25 +3030,13 @@ async fn run_core_loop(
 
             CoreCommand::FetchMusic { from, id, size } => {
                 if let Some(session) = &active_session {
-                    spawn_music_fetch(
-                        session.transport.clone(),
-                        ui_tx.clone(),
-                        from,
-                        id,
-                        size,
-                    );
+                    spawn_music_fetch(session.transport.clone(), ui_tx.clone(), from, id, size);
                 }
             }
 
             CoreCommand::PrefetchMusic { from, id, size } => {
                 if let Some(session) = &active_session {
-                    spawn_music_prefetch(
-                        session.transport.clone(),
-                        ui_tx.clone(),
-                        from,
-                        id,
-                        size,
-                    );
+                    spawn_music_prefetch(session.transport.clone(), ui_tx.clone(), from, id, size);
                 }
             }
 
@@ -2897,14 +3062,19 @@ async fn run_core_loop(
                     Vec::new()
                 };
                 let _ = ui_tx
-                    .send(UiEvent::AudioAppsListed { apps, app_audio_supported })
+                    .send(UiEvent::AudioAppsListed {
+                        apps,
+                        app_audio_supported,
+                    })
                     .await;
             }
 
             CoreCommand::StartScreenShare { audio_app } => {
                 let Some(session) = &mut active_session else {
                     let _ = ui_tx
-                        .send(UiEvent::Error("Join a call before sharing your screen".into()))
+                        .send(UiEvent::Error(
+                            "Join a call before sharing your screen".into(),
+                        ))
                         .await;
                     continue;
                 };
@@ -2927,8 +3097,9 @@ async fn run_core_loop(
                 // audio drops. The channel closes when the host dies (drain hits
                 // EOF), ending the forwarder task on its own.
                 let notices = audio_app.as_deref().map(|_| {
-                    let (tx, mut rx) =
-                        tokio::sync::mpsc::unbounded_channel::<crate::screenshare::PixelpassEvent>();
+                    let (tx, mut rx) = tokio::sync::mpsc::unbounded_channel::<
+                        crate::screenshare::PixelpassEvent,
+                    >();
                     let ui_tx_notices = ui_tx.clone();
                     tokio::spawn(async move {
                         while let Some(ev) = rx.recv().await {
@@ -3021,12 +3192,12 @@ async fn run_core_loop(
 #[cfg(test)]
 mod tests {
     use super::{
-        admit_retained, apply_peer_volume, apply_volume, audio_datagram_len_ok, frame_level,
-        coalesce_insert, coalesce_pop, mix_frames, mix_stereo_frames, next_game_change,
-        should_auto_fetch, stereo_to_mono, KnownPeers, MicLevelMeter, PeerSpeakTicket,
-        MAX_OPUS_PAYLOAD, MAX_RETAINED_PEERS, MIC_LEVEL_REPORT_SAMPLES,
+        KnownPeers, MAX_OPUS_PAYLOAD, MAX_RETAINED_PEERS, MIC_LEVEL_REPORT_SAMPLES, MicLevelMeter,
+        PeerSpeakTicket, admit_retained, apply_peer_volume, apply_volume, audio_datagram_len_ok,
+        coalesce_insert, coalesce_pop, frame_level, mix_frames, mix_stereo_frames,
+        next_game_change, should_auto_fetch, stereo_to_mono,
     };
-    use crate::core::messages::{coalesce_key, CoalesceKey, CoreCommand};
+    use crate::core::messages::{CoalesceKey, CoreCommand, coalesce_key};
     use std::collections::{HashMap, HashSet};
 
     fn endpoint_id() -> iroh::EndpointId {
@@ -3037,14 +3208,30 @@ mod tests {
     fn admit_retained_rejects_only_new_ids_at_the_cap() {
         // Below the cap, a brand-new identity is retained.
         assert!(admit_retained(0, true, MAX_RETAINED_PEERS));
-        assert!(admit_retained(MAX_RETAINED_PEERS - 1, true, MAX_RETAINED_PEERS));
+        assert!(admit_retained(
+            MAX_RETAINED_PEERS - 1,
+            true,
+            MAX_RETAINED_PEERS
+        ));
         // At the cap, a brand-new identity is refused — this is the bound that stops
         // an insider grace-cycling distinct identities from growing the retain table.
-        assert!(!admit_retained(MAX_RETAINED_PEERS, true, MAX_RETAINED_PEERS));
+        assert!(!admit_retained(
+            MAX_RETAINED_PEERS,
+            true,
+            MAX_RETAINED_PEERS
+        ));
         // A peer already tracked always refreshes, even at (or past) the cap: it only
         // updates an existing address and never adds a slot.
-        assert!(admit_retained(MAX_RETAINED_PEERS, false, MAX_RETAINED_PEERS));
-        assert!(admit_retained(MAX_RETAINED_PEERS + 5, false, MAX_RETAINED_PEERS));
+        assert!(admit_retained(
+            MAX_RETAINED_PEERS,
+            false,
+            MAX_RETAINED_PEERS
+        ));
+        assert!(admit_retained(
+            MAX_RETAINED_PEERS + 5,
+            false,
+            MAX_RETAINED_PEERS
+        ));
     }
 
     #[test]
@@ -3176,12 +3363,14 @@ mod tests {
             host_addr: iroh::EndpointAddr::from(original_host),
             topic_id,
             name: "Room".to_string(),
-        }.to_string();
+        }
+        .to_string();
         let restamped = PeerSpeakTicket {
             host_addr: iroh::EndpointAddr::from(member_host),
             topic_id,
             name: "Room".to_string(),
-        }.to_string();
+        }
+        .to_string();
         assert_ne!(original, restamped);
 
         let original_topic = PeerSpeakTicket::topic_of(&original).unwrap();
@@ -3219,7 +3408,10 @@ mod tests {
         drop(tx);
 
         assert_eq!(next_game_change(&mut rx).await, None);
-        assert!(rx.is_none(), "closed receiver must disable its select source");
+        assert!(
+            rx.is_none(),
+            "closed receiver must disable its select source"
+        );
     }
 
     #[test]
@@ -3250,7 +3442,10 @@ mod tests {
         assert_eq!(m.push(&frame(100, chunk)), None);
         let reported = m.push(&frame(100, chunk)).expect("window complete");
         let loud = frame_level(&frame(8000, chunk));
-        assert!((reported - loud).abs() < 1e-6, "peak should hold the loud frame");
+        assert!(
+            (reported - loud).abs() < 1e-6,
+            "peak should hold the loud frame"
+        );
     }
 
     #[test]
@@ -3259,14 +3454,18 @@ mod tests {
         // Fill and report a loud window.
         assert!(m.push(&frame(8000, MIC_LEVEL_REPORT_SAMPLES)).is_some());
         // The next window of silence must report ~zero, not the stale loud peak.
-        let reported = m.push(&frame(0, MIC_LEVEL_REPORT_SAMPLES)).expect("second window");
+        let reported = m
+            .push(&frame(0, MIC_LEVEL_REPORT_SAMPLES))
+            .expect("second window");
         assert_eq!(reported, 0.0, "peak and accumulator reset between windows");
     }
 
     #[test]
     fn mic_meter_silence_reports_zero() {
         let mut m = MicLevelMeter::new();
-        let reported = m.push(&frame(0, MIC_LEVEL_REPORT_SAMPLES)).expect("window complete");
+        let reported = m
+            .push(&frame(0, MIC_LEVEL_REPORT_SAMPLES))
+            .expect("window complete");
         assert_eq!(reported, 0.0);
     }
 

src/dsp/aec.rs

@@ -283,8 +283,14 @@ mod tests {
         let q = echo.len() / 4;
         let early = erle(&echo[..q], &cleaned[..q]);
         let late = erle(&echo[3 * q..], &cleaned[3 * q..]);
-        assert!(late > early + 10.0, "should improve markedly: early {early:.1} late {late:.1}");
-        assert!(late > 20.0, "converged ERLE should exceed 20 dB, got {late:.1}");
+        assert!(
+            late > early + 10.0,
+            "should improve markedly: early {early:.1} late {late:.1}"
+        );
+        assert!(
+            late > 20.0,
+            "converged ERLE should exceed 20 dB, got {late:.1}"
+        );
     }
 
     #[test]
@@ -307,7 +313,10 @@ mod tests {
         let mut aec = Nlms::new(128, 0.5, 1e-6);
         let out = aec.process(&silent_ref, &near);
         for (a, b) in near.iter().zip(&out) {
-            assert!((a - b).abs() < 1e-6, "near-end should pass through: {a} vs {b}");
+            assert!(
+                (a - b).abs() < 1e-6,
+                "near-end should pass through: {a} vs {b}"
+            );
         }
     }
 
@@ -341,14 +350,24 @@ mod tests {
         let mut late_hits = 0;
         for i in 0..far.len() {
             if dtd.update(far[i], mic[i]) {
-                if i < onset { early_hits += 1 } else { late_hits += 1 }
+                if i < onset {
+                    early_hits += 1
+                } else {
+                    late_hits += 1
+                }
             }
         }
         // Echo-only stretch should rarely trip; near-end stretch should trip a lot.
         let early_rate = early_hits as f32 / onset as f32;
         let late_rate = late_hits as f32 / (far.len() - onset) as f32;
-        assert!(early_rate < 0.10, "false-positive rate {early_rate:.2} too high");
-        assert!(late_rate > 0.50, "missed double-talk, rate only {late_rate:.2}");
+        assert!(
+            early_rate < 0.10,
+            "false-positive rate {early_rate:.2} too high"
+        );
+        assert!(
+            late_rate > 0.50,
+            "missed double-talk, rate only {late_rate:.2}"
+        );
     }
 
     #[test]
@@ -380,6 +399,9 @@ mod tests {
             erle_dtd > erle_no + 15.0,
             "DTD should hold the echo path: with {erle_dtd:.1} dB vs without {erle_no:.1} dB"
         );
-        assert!(erle_dtd > 15.0, "held filter should still cancel echo: {erle_dtd:.1} dB");
+        assert!(
+            erle_dtd > 15.0,
+            "held filter should still cancel echo: {erle_dtd:.1} dB"
+        );
     }
 }

src/dsp/echo_path.rs

@@ -115,7 +115,10 @@ mod tests {
         let path = EchoPath::synthetic(480, 480, 0.5, 99);
         let echo = path.apply(&far);
         let ratio = rms(&echo) / rms(&far);
-        assert!((0.3..0.7).contains(&ratio), "echo/far rms ratio {ratio} off target");
+        assert!(
+            (0.3..0.7).contains(&ratio),
+            "echo/far rms ratio {ratio} off target"
+        );
     }
 
     #[test]

src/dsp/fft.rs

@@ -141,7 +141,10 @@ mod tests {
         buf[0] = Complex::new(1.0, 0.0);
         fft(&mut buf);
         for c in &buf {
-            assert!(approx(c.magnitude(), 1.0, 1e-9), "expected flat 1.0, got {c:?}");
+            assert!(
+                approx(c.magnitude(), 1.0, 1e-9),
+                "expected flat 1.0, got {c:?}"
+            );
         }
     }
 

src/dsp/metrics.rs

@@ -62,11 +62,31 @@ pub struct Band {
 
 /// Voice-relevant bands for spotting *where* residual echo or noise lives.
 pub const VOICE_BANDS: &[Band] = &[
-    Band { label: "low (80-300)", low_hz: 80.0, high_hz: 300.0 },
-    Band { label: "low-mid (300-1k)", low_hz: 300.0, high_hz: 1000.0 },
-    Band { label: "mid (1k-3k)", low_hz: 1000.0, high_hz: 3000.0 },
-    Band { label: "high-mid (3k-6k)", low_hz: 3000.0, high_hz: 6000.0 },
-    Band { label: "high (6k-12k)", low_hz: 6000.0, high_hz: 12000.0 },
+    Band {
+        label: "low (80-300)",
+        low_hz: 80.0,
+        high_hz: 300.0,
+    },
+    Band {
+        label: "low-mid (300-1k)",
+        low_hz: 300.0,
+        high_hz: 1000.0,
+    },
+    Band {
+        label: "mid (1k-3k)",
+        low_hz: 1000.0,
+        high_hz: 3000.0,
+    },
+    Band {
+        label: "high-mid (3k-6k)",
+        low_hz: 3000.0,
+        high_hz: 6000.0,
+    },
+    Band {
+        label: "high (6k-12k)",
+        low_hz: 6000.0,
+        high_hz: 12000.0,
+    },
 ];
 
 /// Sums the linear magnitude energy within `[low_hz, high_hz)` across a single

src/dsp/render.rs

@@ -202,7 +202,8 @@ fn legend(opts: &RenderOpts) -> String {
     if opts.ascii {
         for i in 0..steps {
             let v = i as f32 / (steps - 1) as f32;
-            let idx = ((v * (ASCII_RAMP.len() - 1) as f32).round() as usize).min(ASCII_RAMP.len() - 1);
+            let idx =
+                ((v * (ASCII_RAMP.len() - 1) as f32).round() as usize).min(ASCII_RAMP.len() - 1);
             s.push(ASCII_RAMP[idx] as char);
         }
     } else {
@@ -243,7 +244,11 @@ mod tests {
     fn render_produces_grid_of_expected_height() {
         let sig = generators::sine(2000.0, 0.8, 48_000, 48_000);
         let spec = stft::analyze(&sig, 48_000, 1024, 512);
-        let opts = RenderOpts { width: 40, height: 10, ..Default::default() };
+        let opts = RenderOpts {
+            width: 40,
+            height: 10,
+            ..Default::default()
+        };
         let out = render(&spec, &opts);
         // Header + 10 body rows + time axis (2) + legend = non-trivial.
         let lines = out.lines().count();

src/dsp/stft.rs

@@ -94,7 +94,10 @@ mod tests {
             .unwrap()
             .0;
         let peak_hz = s.bin_hz(peak_bin);
-        assert!((peak_hz - freq as f32).abs() < 100.0, "peak at {peak_hz} Hz, want {freq}");
+        assert!(
+            (peak_hz - freq as f32).abs() < 100.0,
+            "peak at {peak_hz} Hz, want {freq}"
+        );
     }
 
     #[test]

src/dsp/wav.rs

@@ -34,7 +34,12 @@ pub fn read(path: &Path) -> Result<WavData, String> {
     let mut pos = 12usize;
     while pos + 8 <= bytes.len() {
         let id = &bytes[pos..pos + 4];
-        let size = u32::from_le_bytes([bytes[pos + 4], bytes[pos + 5], bytes[pos + 6], bytes[pos + 7]]) as usize;
+        let size = u32::from_le_bytes([
+            bytes[pos + 4],
+            bytes[pos + 5],
+            bytes[pos + 6],
+            bytes[pos + 7],
+        ]) as usize;
         let body_start = pos + 8;
         let body_end = (body_start + size).min(bytes.len());
         match id {
@@ -45,7 +50,9 @@ pub fn read(path: &Path) -> Result<WavData, String> {
                 sample_rate = u32::from_le_bytes([fmt[4], fmt[5], fmt[6], fmt[7]]);
                 bits = u16::from_le_bytes([fmt[14], fmt[15]]);
                 if audio_format != 1 {
-                    return Err(format!("unsupported WAV format tag {audio_format} (need PCM=1)"));
+                    return Err(format!(
+                        "unsupported WAV format tag {audio_format} (need PCM=1)"
+                    ));
                 }
             }
             b"data" => {
@@ -75,7 +82,10 @@ pub fn read(path: &Path) -> Result<WavData, String> {
         samples.push(avg / 32768.0);
     }
 
-    Ok(WavData { samples, sample_rate })
+    Ok(WavData {
+        samples,
+        sample_rate,
+    })
 }
 
 /// Writes mono `f32` samples (clamped to `[-1, 1]`) as a 16-bit PCM WAV. Used by

src/files.rs

@@ -76,10 +76,7 @@ pub fn sanitize_filename(raw: &str) -> String {
         .trim();
 
     // Drop control chars; turn other whitespace into single spaces later.
-    let cleaned: String = base
-        .chars()
-        .filter(|c| !c.is_control())
-        .collect();
+    let cleaned: String = base.chars().filter(|c| !c.is_control()).collect();
     let collapsed = cleaned.split_whitespace().collect::<Vec<_>>().join(" ");
     let collapsed = collapsed.trim_matches('.').trim();
 
@@ -145,7 +142,10 @@ pub fn looks_like_audio_name(name: &str) -> bool {
     let Some((_, extension)) = name.rsplit_once('.') else {
         return false;
     };
-    matches!(extension.to_ascii_lowercase().as_str(), "wav" | "mp3" | "ogg" | "oga" | "flac")
+    matches!(
+        extension.to_ascii_lowercase().as_str(),
+        "wav" | "mp3" | "ogg" | "oga" | "flac"
+    )
 }
 
 /// The attachment kind for some file bytes: [`AttachmentKind::Image`] if it
@@ -240,7 +240,11 @@ mod tests {
         let long_stem = "x".repeat(200);
         let name = format!("{long_stem}.png");
         let out = sanitize_filename(&name);
-        assert!(out.chars().count() <= MAX_FILENAME_LEN, "len was {}", out.chars().count());
+        assert!(
+            out.chars().count() <= MAX_FILENAME_LEN,
+            "len was {}",
+            out.chars().count()
+        );
         assert!(out.ends_with(".png"), "extension preserved: {out}");
     }
 
@@ -254,7 +258,9 @@ mod tests {
 
     #[test]
     fn image_sniffing_recognizes_containers() {
-        assert!(is_probably_image(&[0x89, b'P', b'N', b'G', 0x0D, 0x0A, 0x1A, 0x0A, 0, 0]));
+        assert!(is_probably_image(&[
+            0x89, b'P', b'N', b'G', 0x0D, 0x0A, 0x1A, 0x0A, 0, 0
+        ]));
         assert!(is_probably_image(&[0xFF, 0xD8, 0xFF, 0xE0]));
         assert!(is_probably_image(b"GIF89a...."));
         let mut webp = b"RIFF".to_vec();

src/friends.rs

@@ -66,7 +66,11 @@ impl FriendStore {
         if self.contains(&id) {
             return false;
         }
-        self.friends.push(Friend { id, name, last_addr: addr });
+        self.friends.push(Friend {
+            id,
+            name,
+            last_addr: addr,
+        });
         true
     }
 
@@ -118,21 +122,24 @@ pub fn friends_path() -> Option<PathBuf> {
 /// *parse* error bubbles up so a hand-edit being debugged isn't silently
 /// overwritten with an empty list.
 pub fn load() -> Result<FriendStore> {
-    let path = friends_path().context("could not determine a config directory for the friends list")?;
+    let path =
+        friends_path().context("could not determine a config directory for the friends list")?;
     load_at(&path)
 }
 
 /// Save the store. Atomic via tempfile-in-same-dir + rename.
 pub fn save(store: &FriendStore) -> Result<()> {
-    let path = friends_path().context("could not determine a config directory for the friends list")?;
+    let path =
+        friends_path().context("could not determine a config directory for the friends list")?;
     save_at(&path, store)
 }
 
 /// Path-injectable core of [`load`], so the round-trip is testable in a temp dir.
 fn load_at(path: &Path) -> Result<FriendStore> {
     match fs::read_to_string(path) {
-        Ok(s) => serde_json::from_str(&s)
-            .with_context(|| format!("failed to parse {}", path.display())),
+        Ok(s) => {
+            serde_json::from_str(&s).with_context(|| format!("failed to parse {}", path.display()))
+        }
         Err(e) if e.kind() == std::io::ErrorKind::NotFound => Ok(FriendStore::default()),
         Err(e) => Err(e).with_context(|| format!("failed to read {}", path.display())),
     }
@@ -141,11 +148,14 @@ fn load_at(path: &Path) -> Result<FriendStore> {
 /// Path-injectable core of [`save`]. Atomic write: tempfile-in-same-dir, then
 /// rename, so a crash mid-write can't leave a truncated list.
 fn save_at(path: &Path, store: &FriendStore) -> Result<()> {
-    let parent = path.parent().context("friends path has no parent directory")?;
+    let parent = path
+        .parent()
+        .context("friends path has no parent directory")?;
     fs::create_dir_all(parent).with_context(|| format!("failed to create {}", parent.display()))?;
     let json = serde_json::to_string_pretty(store).context("failed to encode the friends list")?;
     let tmp = parent.join(format!(".friends.json.tmp.{}", std::process::id()));
-    fs::write(&tmp, json.as_bytes()).with_context(|| format!("failed to write {}", tmp.display()))?;
+    fs::write(&tmp, json.as_bytes())
+        .with_context(|| format!("failed to write {}", tmp.display()))?;
     fs::rename(&tmp, path)
         .with_context(|| format!("failed to rename {} -> {}", tmp.display(), path.display()))?;
     Ok(())
@@ -219,7 +229,11 @@ mod tests {
     /// A unique temp path; `save_at` creates the nested dir (exercises create_dir_all).
     fn temp_path(tag: &str) -> PathBuf {
         let mut p = std::env::temp_dir();
-        p.push(format!("peerspeak-friendstest-{}-{}", std::process::id(), tag));
+        p.push(format!(
+            "peerspeak-friendstest-{}-{}",
+            std::process::id(),
+            tag
+        ));
         p.push("friends.json");
         p
     }

src/game/detector.rs

@@ -9,11 +9,9 @@
 //! is factored into the pure [`poll_once`] so the wiring of resolve + match +
 //! debounce is unit-tested without any I/O.
 
-use super::{
-    builtin_denylist, match_processes, resolve, Debouncer, DetectedGame, ManualOverride,
-};
 use super::scan;
 use super::steam::SteamProbe;
+use super::{Debouncer, DetectedGame, ManualOverride, builtin_denylist, match_processes, resolve};
 use std::collections::BTreeMap;
 use std::io;
 use std::sync::atomic::{AtomicBool, Ordering};
@@ -145,9 +143,14 @@ fn worker_loop(
         let steam_game = steam.detect();
         let processes = scan::running_executables();
 
-        if let Some(new_current) =
-            poll_once(&mut debouncer, &override_, steam_game, &processes, &process_map, &denylist)
-        {
+        if let Some(new_current) = poll_once(
+            &mut debouncer,
+            &override_,
+            steam_game,
+            &processes,
+            &process_map,
+            &denylist,
+        ) {
             // A closed receiver means core shut down; stop quietly.
             if tx.send(new_current).is_err() {
                 return;
@@ -169,11 +172,18 @@ mod tests {
     use super::*;
 
     fn game(id: &str, name: &str, source: GameSource) -> DetectedGame {
-        DetectedGame { id: id.into(), name: Some(name.into()), source }
+        DetectedGame {
+            id: id.into(),
+            name: Some(name.into()),
+            source,
+        }
     }
 
     fn map(pairs: &[(&str, &str)]) -> BTreeMap<String, String> {
-        pairs.iter().map(|(k, v)| (k.to_string(), v.to_string())).collect()
+        pairs
+            .iter()
+            .map(|(k, v)| (k.to_string(), v.to_string()))
+            .collect()
     }
 
     #[test]
@@ -185,17 +195,38 @@ mod tests {
 
         // First poll: detected but not yet published (needs two hits).
         assert_eq!(
-            poll_once(&mut d, &ManualOverride::Auto, Some(steam.clone()), &[], &empty, &deny),
+            poll_once(
+                &mut d,
+                &ManualOverride::Auto,
+                Some(steam.clone()),
+                &[],
+                &empty,
+                &deny
+            ),
             None
         );
         // Second poll: published.
         assert_eq!(
-            poll_once(&mut d, &ManualOverride::Auto, Some(steam.clone()), &[], &empty, &deny),
+            poll_once(
+                &mut d,
+                &ManualOverride::Auto,
+                Some(steam.clone()),
+                &[],
+                &empty,
+                &deny
+            ),
             Some(Some(steam))
         );
         // Third identical poll: no change event.
         assert_eq!(
-            poll_once(&mut d, &ManualOverride::Auto, Some(game("steam:730", "CS2", GameSource::Steam)), &[], &empty, &deny),
+            poll_once(
+                &mut d,
+                &ManualOverride::Auto,
+                Some(game("steam:730", "CS2", GameSource::Steam)),
+                &[],
+                &empty,
+                &deny
+            ),
             None
         );
     }
@@ -209,7 +240,9 @@ mod tests {
 
         poll_once(&mut d, &ManualOverride::Auto, None, &procs, &user, &deny);
         let change = poll_once(&mut d, &ManualOverride::Auto, None, &procs, &user, &deny);
-        let published = change.expect("should publish on second hit").expect("a game");
+        let published = change
+            .expect("should publish on second hit")
+            .expect("a game");
         assert_eq!(published.id, "exe:hl2_linux");
         assert_eq!(published.name.as_deref(), Some("Half-Life 2"));
     }

src/game/mod.rs

@@ -92,11 +92,20 @@ pub fn resolve(
     processes: &[DetectedGame],
 ) -> Resolution {
     match override_ {
-        ManualOverride::ForceNone => Resolution { game: None, immediate: true },
-        ManualOverride::Force(g) => Resolution { game: Some(g.clone()), immediate: true },
+        ManualOverride::ForceNone => Resolution {
+            game: None,
+            immediate: true,
+        },
+        ManualOverride::Force(g) => Resolution {
+            game: Some(g.clone()),
+            immediate: true,
+        },
         ManualOverride::Auto => {
             let game = steam.or_else(|| processes.first().cloned());
-            Resolution { game, immediate: false }
+            Resolution {
+                game,
+                immediate: false,
+            }
         }
     }
 }
@@ -192,7 +201,11 @@ impl Debouncer {
 /// lowercase it. Keeps any extension (`minecraft.exe` stays distinct from a
 /// hypothetical `minecraft`), trims surrounding whitespace.
 pub fn normalize_exe(raw: &str) -> String {
-    raw.rsplit(['/', '\\']).next().unwrap_or(raw).trim().to_lowercase()
+    raw.rsplit(['/', '\\'])
+        .next()
+        .unwrap_or(raw)
+        .trim()
+        .to_lowercase()
 }
 
 /// Launcher/helper executables that must NEVER be reported as a game even if a
@@ -245,8 +258,10 @@ pub fn match_processes(
     denylist: &BTreeSet<&str>,
 ) -> Vec<DetectedGame> {
     // Normalize the user map once so lookups are basename/case-insensitive.
-    let normalized_map: BTreeMap<String, &String> =
-        user_map.iter().map(|(k, v)| (normalize_exe(k), v)).collect();
+    let normalized_map: BTreeMap<String, &String> = user_map
+        .iter()
+        .map(|(k, v)| (normalize_exe(k), v))
+        .collect();
 
     let mut seen: BTreeSet<String> = BTreeSet::new();
     let mut out: Vec<DetectedGame> = Vec::new();
@@ -288,8 +303,14 @@ mod tests {
     #[test]
     fn stable_ids_are_namespaced() {
         assert_eq!(DetectedGame::steam_id(730), "steam:730");
-        assert_eq!(DetectedGame::exe_id("/usr/games/hl2_linux"), "exe:hl2_linux");
-        assert_eq!(DetectedGame::exe_id("C:\\Games\\Minecraft.exe"), "exe:minecraft.exe");
+        assert_eq!(
+            DetectedGame::exe_id("/usr/games/hl2_linux"),
+            "exe:hl2_linux"
+        );
+        assert_eq!(
+            DetectedGame::exe_id("C:\\Games\\Minecraft.exe"),
+            "exe:minecraft.exe"
+        );
     }
 
     #[test]
@@ -318,8 +339,16 @@ mod tests {
     #[test]
     fn resolve_falls_back_to_first_process_then_none() {
         let procs = vec![
-            DetectedGame { id: "exe:a".into(), name: Some("A".into()), source: GameSource::Process },
-            DetectedGame { id: "exe:b".into(), name: Some("B".into()), source: GameSource::Process },
+            DetectedGame {
+                id: "exe:a".into(),
+                name: Some("A".into()),
+                source: GameSource::Process,
+            },
+            DetectedGame {
+                id: "exe:b".into(),
+                name: Some("B".into()),
+                source: GameSource::Process,
+            },
         ];
         let r = resolve(&ManualOverride::Auto, None, &procs);
         assert_eq!(r.game.as_ref().unwrap().id, "exe:a");
@@ -426,7 +455,10 @@ mod tests {
     // --- process matching --------------------------------------------------
 
     fn map(pairs: &[(&str, &str)]) -> BTreeMap<String, String> {
-        pairs.iter().map(|(k, v)| (k.to_string(), v.to_string())).collect()
+        pairs
+            .iter()
+            .map(|(k, v)| (k.to_string(), v.to_string()))
+            .collect()
     }
 
     #[test]
@@ -461,14 +493,13 @@ mod tests {
         let user = map(&[("zed", "Zed"), ("alpha", "Alpha")]);
         let deny = builtin_denylist();
         // Same game twice (two processes) + reverse discovery order.
-        let running = vec![
-            "/b/zed".into(),
-            "/a/alpha".into(),
-            "/c/alpha".into(),
-        ];
+        let running = vec!["/b/zed".into(), "/a/alpha".into(), "/c/alpha".into()];
         let got = match_processes(&running, &user, &deny);
         // Deduped to two, sorted by id (alpha before zed) regardless of scan order.
-        assert_eq!(got.iter().map(|g| g.id.as_str()).collect::<Vec<_>>(), vec!["exe:alpha", "exe:zed"]);
+        assert_eq!(
+            got.iter().map(|g| g.id.as_str()).collect::<Vec<_>>(),
+            vec!["exe:alpha", "exe:zed"]
+        );
     }
 
     #[test]

src/game/scan.rs

@@ -62,7 +62,7 @@ fn linux_proc_executables() -> Vec<String> {
 fn windows_toolhelp_executables() -> Vec<String> {
     use windows_sys::Win32::Foundation::{CloseHandle, INVALID_HANDLE_VALUE};
     use windows_sys::Win32::System::Diagnostics::ToolHelp::{
-        CreateToolhelp32Snapshot, Process32FirstW, Process32NextW, PROCESSENTRY32W,
+        CreateToolhelp32Snapshot, PROCESSENTRY32W, Process32FirstW, Process32NextW,
         TH32CS_SNAPPROCESS,
     };
 
@@ -78,7 +78,11 @@ fn windows_toolhelp_executables() -> Vec<String> {
     let mut ok = unsafe { Process32FirstW(snapshot, &mut entry) };
     while ok != 0 {
         // szExeFile is a NUL-terminated UTF-16 array (the basename, e.g. game.exe).
-        let end = entry.szExeFile.iter().position(|&c| c == 0).unwrap_or(entry.szExeFile.len());
+        let end = entry
+            .szExeFile
+            .iter()
+            .position(|&c| c == 0)
+            .unwrap_or(entry.szExeFile.len());
         let name = String::from_utf16_lossy(&entry.szExeFile[..end]);
         if !name.is_empty() {
             out.push(name);
@@ -101,7 +105,10 @@ mod tests {
         // The test runner itself is a process, so /proc enumeration must be
         // non-empty and include something that normalizes to our own exe basename.
         let exes = running_executables();
-        assert!(!exes.is_empty(), "expected to see running processes via /proc");
+        assert!(
+            !exes.is_empty(),
+            "expected to see running processes via /proc"
+        );
         // Our own /proc/self/exe basename should appear among them.
         let me = std::fs::read_link("/proc/self/exe")
             .ok()
@@ -109,7 +116,8 @@ mod tests {
         if let Some(me) = me {
             let me_norm = super::super::normalize_exe(&me);
             assert!(
-                exes.iter().any(|e| super::super::normalize_exe(e) == me_norm),
+                exes.iter()
+                    .any(|e| super::super::normalize_exe(e) == me_norm),
                 "running list should include our own executable {me_norm:?}"
             );
         }

src/game/steam.rs

@@ -25,8 +25,7 @@ const MAX_STEAM_PATH_BYTES: u32 = 4 * 1024;
 
 #[cfg(any(windows, test))]
 fn validate_reg_len(len: u32) -> Option<usize> {
-    (len != 0 && len.is_multiple_of(2) && len <= MAX_STEAM_PATH_BYTES)
-        .then_some(len as usize / 2)
+    (len != 0 && len.is_multiple_of(2) && len <= MAX_STEAM_PATH_BYTES).then_some(len as usize / 2)
 }
 
 #[cfg(any(windows, test))]
@@ -48,7 +47,14 @@ fn decode_reg_sz(mut buf: Vec<u16>, returned_bytes: u32) -> Option<String> {
 pub fn parse_running_app_id(registry_vdf: &str) -> Option<u32> {
     let root = vdf::parse(registry_vdf).ok()?;
     let raw = root
-        .get_path(&["Registry", "HKCU", "Software", "Valve", "Steam", "RunningAppID"])
+        .get_path(&[
+            "Registry",
+            "HKCU",
+            "Software",
+            "Valve",
+            "Steam",
+            "RunningAppID",
+        ])
         .and_then(Value::as_str)?;
     let id: u32 = raw.trim().parse().ok()?;
     (id != 0).then_some(id)
@@ -196,7 +202,13 @@ impl SteamProbe {
             return cached.name.clone();
         }
         let name = read_capped(&manifest).and_then(|c| parse_app_name(&c));
-        self.manifests.insert(app_id, CachedManifest { mtime, name: name.clone() });
+        self.manifests.insert(
+            app_id,
+            CachedManifest {
+                mtime,
+                name: name.clone(),
+            },
+        );
         name
     }
 
@@ -240,7 +252,11 @@ impl SteamProbe {
                 paths.push(root.clone());
             }
         }
-        self.libraries = CachedLibraries { source, mtime, paths: paths.clone() };
+        self.libraries = CachedLibraries {
+            source,
+            mtime,
+            paths: paths.clone(),
+        };
         paths
     }
 }
@@ -360,8 +376,8 @@ mod win {
     use std::path::PathBuf;
     use windows_sys::Win32::Foundation::ERROR_SUCCESS;
     use windows_sys::Win32::System::Registry::{
-        RegCloseKey, RegOpenKeyExW, RegQueryValueExW, HKEY, HKEY_CURRENT_USER, KEY_READ,
-        REG_DWORD, REG_SZ,
+        HKEY, HKEY_CURRENT_USER, KEY_READ, REG_DWORD, REG_SZ, RegCloseKey, RegOpenKeyExW,
+        RegQueryValueExW,
     };
 
     /// UTF-16, NUL-terminated, for a Win32 wide-string argument.
@@ -374,9 +390,8 @@ mod win {
         let subkey = wide("Software\\Valve\\Steam");
         let mut hkey: HKEY = std::ptr::null_mut();
         // SAFETY: valid HKEY constant, NUL-terminated subkey, out-param for the handle.
-        let rc = unsafe {
-            RegOpenKeyExW(HKEY_CURRENT_USER, subkey.as_ptr(), 0, KEY_READ, &mut hkey)
-        };
+        let rc =
+            unsafe { RegOpenKeyExW(HKEY_CURRENT_USER, subkey.as_ptr(), 0, KEY_READ, &mut hkey) };
         (rc == ERROR_SUCCESS).then_some(hkey)
     }
 
@@ -463,13 +478,20 @@ mod tests {
 
     #[test]
     fn registry_string_lengths_are_bounded_and_trimmed() {
-        assert_eq!(validate_reg_len(5), None, "odd byte lengths are invalid UTF-16");
+        assert_eq!(
+            validate_reg_len(5),
+            None,
+            "odd byte lengths are invalid UTF-16"
+        );
         assert_eq!(validate_reg_len(MAX_STEAM_PATH_BYTES + 2), None);
         assert_eq!(validate_reg_len(8), Some(4));
 
         let raw = "C:\\Steam\0ignored".encode_utf16().collect::<Vec<_>>();
         let returned_bytes = ("C:\\Steam\0".encode_utf16().count() * 2) as u32;
-        assert_eq!(decode_reg_sz(raw, returned_bytes).as_deref(), Some("C:\\Steam"));
+        assert_eq!(
+            decode_reg_sz(raw, returned_bytes).as_deref(),
+            Some("C:\\Steam")
+        );
     }
 
     #[test]
@@ -495,10 +517,13 @@ mod tests {
             "contentstatsid" "12345"
         }"#;
         let got = parse_library_paths(current);
-        assert_eq!(got, vec![
-            PathBuf::from("/home/eric/.local/share/Steam"),
-            PathBuf::from("/mnt/games/SteamLibrary"),
-        ]);
+        assert_eq!(
+            got,
+            vec![
+                PathBuf::from("/home/eric/.local/share/Steam"),
+                PathBuf::from("/mnt/games/SteamLibrary"),
+            ]
+        );
 
         // Legacy shape: numeric keys map straight to path strings.
         let legacy = r#""LibraryFolders" {
@@ -522,13 +547,25 @@ mod tests {
         let environ = b"PATH=/usr/bin\0SteamAppId=440\0HOME=/home/x\0SteamGameId=440\0";
         assert_eq!(parse_steam_app_id_from_environ(environ), Some(440));
         // Nonzero requirement: SteamAppId=0 (the launcher itself) is ignored.
-        assert_eq!(parse_steam_app_id_from_environ(b"SteamAppId=0\0FOO=bar\0"), None);
+        assert_eq!(
+            parse_steam_app_id_from_environ(b"SteamAppId=0\0FOO=bar\0"),
+            None
+        );
         // Absent → None (a non-Steam process).
-        assert_eq!(parse_steam_app_id_from_environ(b"PATH=/usr/bin\0HOME=/home/x\0"), None);
+        assert_eq!(
+            parse_steam_app_id_from_environ(b"PATH=/usr/bin\0HOME=/home/x\0"),
+            None
+        );
         // Not fooled by a different var that merely contains the substring.
-        assert_eq!(parse_steam_app_id_from_environ(b"MY_SteamAppId=999\0"), None);
+        assert_eq!(
+            parse_steam_app_id_from_environ(b"MY_SteamAppId=999\0"),
+            None
+        );
         // Garbage value → None, no panic.
-        assert_eq!(parse_steam_app_id_from_environ(b"SteamAppId=notanumber\0"), None);
+        assert_eq!(
+            parse_steam_app_id_from_environ(b"SteamAppId=notanumber\0"),
+            None
+        );
     }
 
     #[test]

src/game/vdf.rs

@@ -234,10 +234,20 @@ mod tests {
 }
 "#;
         let root = parse(acf).unwrap();
-        assert_eq!(root.get_path(&["AppState", "name"]).and_then(Value::as_str), Some("Counter-Strike 2"));
-        assert_eq!(root.get_path(&["AppState", "appid"]).and_then(Value::as_str), Some("730"));
+        assert_eq!(
+            root.get_path(&["AppState", "name"]).and_then(Value::as_str),
+            Some("Counter-Strike 2")
+        );
+        assert_eq!(
+            root.get_path(&["AppState", "appid"])
+                .and_then(Value::as_str),
+            Some("730")
+        );
         // Case-insensitive key lookup.
-        assert_eq!(root.get_path(&["appstate", "NAME"]).and_then(Value::as_str), Some("Counter-Strike 2"));
+        assert_eq!(
+            root.get_path(&["appstate", "NAME"]).and_then(Value::as_str),
+            Some("Counter-Strike 2")
+        );
     }
 
     #[test]
@@ -262,8 +272,14 @@ mod tests {
 "#;
         let root = parse(vdf).unwrap();
         let lf = root.get("libraryfolders").unwrap();
-        assert_eq!(lf.get_path(&["0", "path"]).and_then(Value::as_str), Some(r"C:\Program Files (x86)\Steam"));
-        assert_eq!(lf.get_path(&["1", "path"]).and_then(Value::as_str), Some("/home/eric/.local/share/Steam"));
+        assert_eq!(
+            lf.get_path(&["0", "path"]).and_then(Value::as_str),
+            Some(r"C:\Program Files (x86)\Steam")
+        );
+        assert_eq!(
+            lf.get_path(&["1", "path"]).and_then(Value::as_str),
+            Some("/home/eric/.local/share/Steam")
+        );
         // The library folder ids are iterable for discovery.
         let ids: Vec<&str> = lf.entries().iter().map(|(k, _)| k.as_str()).collect();
         assert_eq!(ids, vec!["0", "1"]);
@@ -292,7 +308,14 @@ mod tests {
 "#;
         let root = parse(reg).unwrap();
         let appid = root
-            .get_path(&["Registry", "HKCU", "Software", "Valve", "Steam", "RunningAppID"])
+            .get_path(&[
+                "Registry",
+                "HKCU",
+                "Software",
+                "Valve",
+                "Steam",
+                "RunningAppID",
+            ])
             .and_then(Value::as_str);
         assert_eq!(appid, Some("570"));
     }
@@ -301,7 +324,10 @@ mod tests {
     fn handles_comments_and_barewords() {
         let vdf = "// a comment\n\"root\"\n{\n\tbarekey barevalue // trailing\n}\n";
         let root = parse(vdf).unwrap();
-        assert_eq!(root.get_path(&["root", "barekey"]).and_then(Value::as_str), Some("barevalue"));
+        assert_eq!(
+            root.get_path(&["root", "barekey"]).and_then(Value::as_str),
+            Some("barevalue")
+        );
     }
 
     #[test]

src/hotkeys.rs

@@ -89,9 +89,9 @@ impl HotkeyAction {
 
     pub fn tier(self) -> HotkeyTier {
         match self {
-            HotkeyAction::ToggleMute
-            | HotkeyAction::ToggleDeafen
-            | HotkeyAction::OpenSettings => HotkeyTier::AppWide,
+            HotkeyAction::ToggleMute | HotkeyAction::ToggleDeafen | HotkeyAction::OpenSettings => {
+                HotkeyTier::AppWide
+            }
             HotkeyAction::PushToTalk | HotkeyAction::LeaveRoom => HotkeyTier::RoomOnly,
         }
     }
@@ -278,7 +278,10 @@ mod tests {
 
     #[test]
     fn parse_single_character_case_folds() {
-        assert_eq!(parse_binding("M"), Some(KeyBinding::Character("m".to_string())));
+        assert_eq!(
+            parse_binding("M"),
+            Some(KeyBinding::Character("m".to_string()))
+        );
         assert_eq!(format_binding(parse_binding("m").as_ref()), "M");
     }
 }

src/identity.rs

@@ -41,7 +41,8 @@ pub fn identity_path() -> Option<PathBuf> {
 /// A *missing* file (first ever run, or right after a reset) is the normal
 /// create path.
 pub fn load_or_create() -> Result<SecretKey> {
-    let path = identity_path().context("could not determine a config directory for the identity key")?;
+    let path =
+        identity_path().context("could not determine a config directory for the identity key")?;
     load_or_create_at(&path)
 }
 
@@ -49,7 +50,8 @@ pub fn load_or_create() -> Result<SecretKey> {
 /// deliberate "Regenerate identity" / unlink action — the old id is discarded and
 /// unrecoverable, so callers should confirm with the user first.
 pub fn regenerate() -> Result<SecretKey> {
-    let path = identity_path().context("could not determine a config directory for the identity key")?;
+    let path =
+        identity_path().context("could not determine a config directory for the identity key")?;
     let key = SecretKey::generate();
     save_at(&path, &key)?;
     Ok(key)
@@ -57,7 +59,8 @@ pub fn regenerate() -> Result<SecretKey> {
 
 /// Atomic, `0600` write at the default identity path. See [`save_at`].
 pub fn save(key: &SecretKey) -> Result<()> {
-    let path = identity_path().context("could not determine a config directory for the identity key")?;
+    let path =
+        identity_path().context("could not determine a config directory for the identity key")?;
     save_at(&path, key)
 }
 
@@ -80,13 +83,15 @@ fn load_or_create_at(path: &std::path::Path) -> Result<SecretKey> {
 /// perms are applied before the rename so the secret is never briefly
 /// world-readable.
 fn save_at(path: &std::path::Path, key: &SecretKey) -> Result<()> {
-    let parent = path.parent().context("identity path has no parent directory")?;
+    let parent = path
+        .parent()
+        .context("identity path has no parent directory")?;
     fs::create_dir_all(parent).with_context(|| format!("failed to create {}", parent.display()))?;
 
     let tmp = parent.join(format!(".identity.key.tmp.{}", std::process::id()));
     {
-        let mut f =
-            fs::File::create(&tmp).with_context(|| format!("failed to create {}", tmp.display()))?;
+        let mut f = fs::File::create(&tmp)
+            .with_context(|| format!("failed to create {}", tmp.display()))?;
         #[cfg(unix)]
         {
             use std::os::unix::fs::PermissionsExt;

src/lib.rs

@@ -1,27 +1,27 @@
-pub mod audio;
-pub mod codec;
-pub mod dsp;
-pub mod network;
-pub mod protocol;
-pub mod core;
 pub mod app;
-pub mod config;
-pub mod identity;
-pub mod friends;
-pub mod presence;
-pub mod presence_net;
-pub mod theme;
-pub mod notify;
-pub mod screenshare;
-pub mod sanitize;
+pub mod audio;
 pub mod avatar;
 pub mod background;
-pub mod recents;
+pub mod codec;
+pub mod config;
+pub mod core;
 pub mod discovery;
-pub mod hotkeys;
+pub mod dsp;
 pub mod files;
-pub mod playlist;
+pub mod friends;
 pub mod game;
+pub mod hotkeys;
+pub mod identity;
+pub mod network;
+pub mod notify;
+pub mod playlist;
+pub mod presence;
+pub mod presence_net;
+pub mod protocol;
+pub mod recents;
+pub mod sanitize;
+pub mod screenshare;
+pub mod theme;
 pub mod widget;
 
 use std::fs::File;
@@ -75,7 +75,8 @@ pub fn redact_for_log(value: &str) -> String {
 }
 
 pub fn short_bytes_hex(bytes: &[u8]) -> String {
-    bytes.iter()
+    bytes
+        .iter()
         .take(6)
         .map(|b| format!("{b:02x}"))
         .collect::<Vec<_>>()
@@ -83,7 +84,10 @@ pub fn short_bytes_hex(bytes: &[u8]) -> String {
 }
 
 fn rotated_log_path(path: &Path) -> PathBuf {
-    let file_name = path.file_name().and_then(|n| n.to_str()).unwrap_or("peerspeak.log");
+    let file_name = path
+        .file_name()
+        .and_then(|n| n.to_str())
+        .unwrap_or("peerspeak.log");
     path.with_file_name(format!("{file_name}.1"))
 }
 
@@ -100,7 +104,10 @@ fn prepare_log_file_with_limit(path: &Path, max_bytes: u64) -> std::io::Result<F
         let rotated = rotated_log_path(path);
         let _ = std::fs::remove_file(&rotated);
         if std::fs::rename(path, &rotated).is_err() {
-            let _ = std::fs::OpenOptions::new().write(true).truncate(true).open(path);
+            let _ = std::fs::OpenOptions::new()
+                .write(true)
+                .truncate(true)
+                .open(path);
         }
     }
 

src/network/gossip.rs

@@ -1,14 +1,14 @@
-use crate::network::{RoomState, NetError, PeerState, RoomEvent, PeerSpeakTicket};
+use crate::network::{NetError, PeerSpeakTicket, PeerState, RoomEvent, RoomState};
+use async_trait::async_trait;
 use iroh::{Endpoint, EndpointAddr, EndpointId, SecretKey, Signature, TransportAddr};
 use iroh_gossip::net::Gossip;
 use iroh_gossip::proto::TopicId;
+use serde::{Deserialize, Serialize};
+use std::collections::{BTreeSet, HashMap, HashSet};
+use std::sync::{Arc, Mutex};
 use tokio::sync::mpsc;
 use tokio::sync::mpsc::Receiver;
-use std::sync::{Arc, Mutex};
-use std::collections::{BTreeSet, HashMap, HashSet};
-use async_trait::async_trait;
 use tokio_stream::StreamExt;
-use serde::{Serialize, Deserialize};
 
 /// Domain-separation tag mixed into every signed gossip payload so a signature
 /// can never be lifted out of this protocol/version into another context.
@@ -78,7 +78,12 @@ fn signable_bytes(topic: &[u8; 32], author: &EndpointId, ts: u64, msg: &GossipMe
 fn sign_gossip(secret: &SecretKey, topic: &[u8; 32], ts: u64, msg: GossipMessage) -> GossipPayload {
     let author = secret.public();
     let sig = secret.sign(&signable_bytes(topic, &author, ts, &msg));
-    GossipPayload { author, ts, msg, sig }
+    GossipPayload {
+        author,
+        ts,
+        msg,
+        sig,
+    }
 }
 
 /// Why a received gossip payload was rejected (logging + tests).
@@ -233,7 +238,10 @@ impl ClockSkewMonitor {
     }
 
     fn drop_oldest_authors(&mut self) {
-        let remove_count = self.authors.len().saturating_sub(CLOCK_SKEW_AUTHORS_SOFT_CAP);
+        let remove_count = self
+            .authors
+            .len()
+            .saturating_sub(CLOCK_SKEW_AUTHORS_SOFT_CAP);
         let mut by_age: Vec<_> = self
             .authors
             .iter()
@@ -339,7 +347,8 @@ fn verify_gossip(
         return Err(GossipReject::OutOfWindow);
     }
     if let GossipMessage::Announce(state) = &payload.msg
-        && state.addr.id != payload.author {
+        && state.addr.id != payload.author
+    {
         return Err(GossipReject::AnnounceAddressMismatch);
     }
     Ok(())
@@ -466,7 +475,8 @@ impl RoomState for IrohGossipState {
         // Make every dial target resolvable: the ticket host plus any retained
         // peers handed in (their addresses may have aged out of a fresh endpoint's
         // book even though the persistent lookup usually still holds them).
-        self.address_lookup.add_endpoint_info(ticket.host_addr.clone());
+        self.address_lookup
+            .add_endpoint_info(ticket.host_addr.clone());
         for addr in &extra_bootstrap {
             self.address_lookup.add_endpoint_info(addr.clone());
         }
@@ -478,7 +488,10 @@ impl RoomState for IrohGossipState {
             compute_bootstrap(self_state.addr.id, ticket.host_addr.id, &extra_bootstrap);
         crate::log_msg(&format!("Bootstrap peers for join: {:?}", bootstrap_peers));
 
-        let gossip_topic = self.gossip.subscribe(topic_id, bootstrap_peers).await
+        let gossip_topic = self
+            .gossip
+            .subscribe(topic_id, bootstrap_peers)
+            .await
             .map_err(|e| {
                 let err = format!("Failed to join gossip topic: {}", e);
                 crate::log_msg(&err);
@@ -505,32 +518,44 @@ impl RoomState for IrohGossipState {
         let topic_bytes = ticket.topic_id;
 
         let handle = tokio::spawn(async move {
-            crate::log_msg(&format!("Spawned gossip topic loop for self_id={:?}", self_id));
+            crate::log_msg(&format!(
+                "Spawned gossip topic loop for self_id={:?}",
+                self_id
+            ));
             let mut state_mutations_seen = HashMap::new();
             let mut clock_skew_monitor = ClockSkewMonitor::default();
 
             // Broadcast initial state
             let initial_payload = {
                 let guard = self_state_clone.lock().unwrap();
-                guard.as_ref().map(|s| sign_gossip(
-                    &secret_key,
-                    &topic_bytes,
-                    now_millis(),
-                    GossipMessage::Announce(s.clone()),
-                ))
+                guard.as_ref().map(|s| {
+                    sign_gossip(
+                        &secret_key,
+                        &topic_bytes,
+                        now_millis(),
+                        GossipMessage::Announce(s.clone()),
+                    )
+                })
             };
 
             if let Some(payload) = initial_payload
-                && let Ok(bytes) = serde_json::to_vec(&payload) {
-                    crate::log_msg(&format!("Broadcasting initial state from self_id={:?}", self_id));
-                    let _ = gossip_sender_clone.broadcast(bytes.into()).await;
-                }
+                && let Ok(bytes) = serde_json::to_vec(&payload)
+            {
+                crate::log_msg(&format!(
+                    "Broadcasting initial state from self_id={:?}",
+                    self_id
+                ));
+                let _ = gossip_sender_clone.broadcast(bytes.into()).await;
+            }
 
             // Stream topic messages
             while let Some(res) = gossip_receiver.next().await {
                 match res {
                     Ok(iroh_gossip::api::Event::Received(msg)) => {
-                        crate::log_msg(&format!("Gossip received Event::Received from delivery={:?}", msg.delivered_from));
+                        crate::log_msg(&format!(
+                            "Gossip received Event::Received from delivery={:?}",
+                            msg.delivered_from
+                        ));
                         // Reject oversized frames BEFORE deserializing: parsing
                         // allocates, so a size check has to precede `from_slice` to
                         // bound the memory a hostile peer can make us hold.
@@ -577,13 +602,13 @@ impl RoomState for IrohGossipState {
                                     continue;
                                 }
                                 let our_id = {
-                                    self_state_clone.lock().unwrap()
-                                        .as_ref()
-                                        .map(|s| s.addr.id)
+                                    self_state_clone.lock().unwrap().as_ref().map(|s| s.addr.id)
                                 };
-                                
+
                                 if Some(payload.author) == our_id {
-                                    crate::log_msg("Gossip Event::Received from ourselves; ignoring");
+                                    crate::log_msg(
+                                        "Gossip Event::Received from ourselves; ignoring",
+                                    );
                                     continue;
                                 }
 
@@ -635,7 +660,9 @@ impl RoomState for IrohGossipState {
                                         // Screen-share tickets are capabilities and
                                         // peer-supplied: cap/validate once at ingest
                                         // so invalid offers never render a Watch button.
-                                        state.sharing = state.sharing.and_then(crate::screenshare::sanitize_ticket);
+                                        state.sharing = state
+                                            .sharing
+                                            .and_then(crate::screenshare::sanitize_ticket);
                                         // The game-presence label is untrusted
                                         // peer text like the name: sanitize +
                                         // length-cap at ingest (strip bidi/control,
@@ -651,8 +678,11 @@ impl RoomState for IrohGossipState {
                                         // bounds a future fetch (reject anything
                                         // outside the attachment cap).
                                         state.music = state.music.and_then(|mut m| {
-                                            let name = crate::sanitize::sanitize_game_label(&m.name);
-                                            if name.is_empty() || !crate::files::size_within_cap(m.size) {
+                                            let name =
+                                                crate::sanitize::sanitize_game_label(&m.name);
+                                            if name.is_empty()
+                                                || !crate::files::size_within_cap(m.size)
+                                            {
                                                 return None;
                                             }
                                             m.name = name;
@@ -679,8 +709,10 @@ impl RoomState for IrohGossipState {
                                         // cleared ONLY once re-admitted — clearing it before
                                         // a possible reject would orphan its recovery state
                                         // (Tier C F-01 audit).
-                                        let is_reconnecting =
-                                            disconnected_peers.lock().unwrap().contains(&payload.author);
+                                        let is_reconnecting = disconnected_peers
+                                            .lock()
+                                            .unwrap()
+                                            .contains(&payload.author);
                                         let admitted = {
                                             let mut peer_map = peers.lock().unwrap();
                                             let is_new = !peer_map.contains_key(&payload.author);
@@ -689,11 +721,17 @@ impl RoomState for IrohGossipState {
                                             // memory/tasks/dials without bound (Tier C
                                             // F-01). Existing-peer updates and reconnects
                                             // are exempt; only brand-new authors are gated.
-                                            let subject_to_cap = announce_subject_to_cap(is_new, is_reconnecting);
-                                            if !admit_into_roster(peer_map.len(), subject_to_cap, MAX_ACTIVE_PEERS) {
+                                            let subject_to_cap =
+                                                announce_subject_to_cap(is_new, is_reconnecting);
+                                            if !admit_into_roster(
+                                                peer_map.len(),
+                                                subject_to_cap,
+                                                MAX_ACTIVE_PEERS,
+                                            ) {
                                                 None
                                             } else {
-                                                let state_changed = peer_map.get(&payload.author) != Some(&state);
+                                                let state_changed =
+                                                    peer_map.get(&payload.author) != Some(&state);
                                                 if is_new || state_changed {
                                                     peer_map.insert(payload.author, state.clone());
                                                 }
@@ -723,35 +761,54 @@ impl RoomState for IrohGossipState {
                                             // address set, so leave/re-announce cycles
                                             // can't accumulate attacker-supplied history
                                             // (Tier C F-01).
-                                            let _ = address_lookup.set_endpoint_info(state.addr.clone());
-                                            let _ = event_tx.send(RoomEvent::PeerJoined(payload.author, state)).await;
+                                            let _ = address_lookup
+                                                .set_endpoint_info(state.addr.clone());
+                                            let _ = event_tx
+                                                .send(RoomEvent::PeerJoined(payload.author, state))
+                                                .await;
                                         } else if state_changed {
                                             crate::log_msg(&format!(
                                                 "Gossip peer state updated: {}, state: {}",
                                                 crate::short_id(&payload.author.to_string()),
                                                 peer_state_for_log(&state)
                                             ));
-                                            let _ = event_tx.send(RoomEvent::PeerUpdated(payload.author, state)).await;
+                                            let _ = event_tx
+                                                .send(RoomEvent::PeerUpdated(payload.author, state))
+                                                .await;
                                         }
                                     }
                                     GossipMessage::Leave => {
-                                        crate::log_msg(&format!("Gossip peer leave request from author={:?}", payload.author));
+                                        crate::log_msg(&format!(
+                                            "Gossip peer leave request from author={:?}",
+                                            payload.author
+                                        ));
                                         // Drop this id's address-lookup entry so cycling
                                         // distinct identities through Announce→Leave can't
                                         // grow the lookup for the room's lifetime (Tier C
                                         // F-01 audit). Re-announce re-populates it.
                                         let _ = address_lookup.remove_endpoint_info(payload.author);
-                                        let removed = peers.lock().unwrap().remove(&payload.author).is_some();
+                                        let removed =
+                                            peers.lock().unwrap().remove(&payload.author).is_some();
                                         let was_disconnected = disconnected_peers
                                             .lock()
                                             .unwrap()
                                             .remove(&payload.author);
                                         if removed || was_disconnected {
-                                            let _ = event_tx.send(RoomEvent::PeerLeft(payload.author)).await;
+                                            let _ = event_tx
+                                                .send(RoomEvent::PeerLeft(payload.author))
+                                                .await;
                                         }
                                     }
-                                    GossipMessage::Chat { name, text, ts, attachment } => {
-                                        crate::log_msg(&format!("Gossip chat from author={:?}", payload.author));
+                                    GossipMessage::Chat {
+                                        name,
+                                        text,
+                                        ts,
+                                        attachment,
+                                    } => {
+                                        crate::log_msg(&format!(
+                                            "Gossip chat from author={:?}",
+                                            payload.author
+                                        ));
                                         // Defensively normalize an untrusted attachment
                                         // descriptor: sanitize the filename and drop it
                                         // entirely if it declares an out-of-cap size.
@@ -762,18 +819,23 @@ impl RoomState for IrohGossipState {
                                             a.name = crate::files::sanitize_filename(&a.name);
                                             Some(a)
                                         });
-                                        let _ = event_tx.send(RoomEvent::ChatMessage {
-                                            from: payload.author,
-                                            name,
-                                            text,
-                                            ts,
-                                            attachment,
-                                        }).await;
+                                        let _ = event_tx
+                                            .send(RoomEvent::ChatMessage {
+                                                from: payload.author,
+                                                name,
+                                                text,
+                                                ts,
+                                                attachment,
+                                            })
+                                            .await;
                                     }
                                 }
                             }
                             Err(e) => {
-                                crate::log_msg(&format!("Gossip failed to deserialize payload: {:?}", e));
+                                crate::log_msg(&format!(
+                                    "Gossip failed to deserialize payload: {:?}",
+                                    e
+                                ));
                             }
                         }
                     }
@@ -782,18 +844,24 @@ impl RoomState for IrohGossipState {
                         // Resend state on new neighbor connection to guarantee synchronization
                         let payload_opt = {
                             let guard = self_state_clone.lock().unwrap();
-                            guard.as_ref().map(|state| sign_gossip(
-                                &secret_key,
-                                &topic_bytes,
-                                now_millis(),
-                                GossipMessage::Announce(state.clone()),
-                            ))
+                            guard.as_ref().map(|state| {
+                                sign_gossip(
+                                    &secret_key,
+                                    &topic_bytes,
+                                    now_millis(),
+                                    GossipMessage::Announce(state.clone()),
+                                )
+                            })
                         };
                         if let Some(payload) = payload_opt
-                            && let Ok(bytes) = serde_json::to_vec(&payload) {
-                                crate::log_msg(&format!("Broadcasting state to new neighbor={:?}", peer_id));
-                                let _ = gossip_sender_clone.broadcast(bytes.into()).await;
-                            }
+                            && let Ok(bytes) = serde_json::to_vec(&payload)
+                        {
+                            crate::log_msg(&format!(
+                                "Broadcasting state to new neighbor={:?}",
+                                peer_id
+                            ));
+                            let _ = gossip_sender_clone.broadcast(bytes.into()).await;
+                        }
                     }
                     Ok(iroh_gossip::api::Event::NeighborDown(peer_id)) => {
                         crate::log_msg(&format!("Gossip event: NeighborDown={:?}", peer_id));
@@ -807,7 +875,10 @@ impl RoomState for IrohGossipState {
                         let removed = peers.lock().unwrap().remove(&peer_id).is_some();
                         if removed {
                             disconnected_peers.lock().unwrap().insert(peer_id);
-                            crate::log_msg(&format!("Peer connection lost (NeighborDown): {:?}", peer_id));
+                            crate::log_msg(&format!(
+                                "Peer connection lost (NeighborDown): {:?}",
+                                peer_id
+                            ));
                             let _ = event_tx.send(RoomEvent::PeerConnectionLost(peer_id)).await;
                         }
                     }
@@ -844,7 +915,9 @@ impl RoomState for IrohGossipState {
             );
             if let Ok(bytes) = serde_json::to_vec(&payload) {
                 crate::log_msg("Broadcasting updated self state to gossip");
-                sender.broadcast(bytes.into()).await
+                sender
+                    .broadcast(bytes.into())
+                    .await
                     .map_err(|e| NetError::Gossip(e.to_string()))?;
             }
         }
@@ -909,10 +982,17 @@ impl RoomState for IrohGossipState {
                 &self.secret_key,
                 &topic,
                 ts,
-                GossipMessage::Chat { name, text, ts, attachment },
+                GossipMessage::Chat {
+                    name,
+                    text,
+                    ts,
+                    attachment,
+                },
             );
             if let Ok(bytes) = serde_json::to_vec(&payload) {
-                sender.broadcast(bytes.into()).await
+                sender
+                    .broadcast(bytes.into())
+                    .await
                     .map_err(|e| NetError::Gossip(e.to_string()))?;
             }
         }
@@ -934,12 +1014,7 @@ impl RoomState for IrohGossipState {
 
         let sender_opt = self.active_sender.lock().unwrap().take();
         if let (Some(sender), Some(topic)) = (sender_opt, topic_opt) {
-            let payload = sign_gossip(
-                &self.secret_key,
-                &topic,
-                now_millis(),
-                GossipMessage::Leave,
-            );
+            let payload = sign_gossip(&self.secret_key, &topic, now_millis(), GossipMessage::Leave);
             if let Ok(bytes) = serde_json::to_vec(&payload) {
                 crate::log_msg("Broadcasting Leave message to gossip");
                 let _ = sender.broadcast(bytes.into()).await;
@@ -1060,7 +1135,9 @@ mod tests {
     #[test]
     fn reconnecting_and_existing_peers_are_exempt_from_the_cap() {
         // A brand-new author counts against the cap...
-        assert!(announce_subject_to_cap(/* is_new */ true, /* is_reconnecting */ false));
+        assert!(announce_subject_to_cap(
+            /* is_new */ true, /* is_reconnecting */ false
+        ));
         // ...but an ordinary update from an in-roster peer does not...
         assert!(!announce_subject_to_cap(false, false));
         // ...and neither does a re-announce from a peer mid-reconnect, even
@@ -1070,7 +1147,11 @@ mod tests {
         // Combined with admit_into_roster: a reconnecting author passes at a full
         // roster, a brand-new one does not.
         assert!(admit_into_roster(3, announce_subject_to_cap(true, true), 3));
-        assert!(!admit_into_roster(3, announce_subject_to_cap(true, false), 3));
+        assert!(!admit_into_roster(
+            3,
+            announce_subject_to_cap(true, false),
+            3
+        ));
     }
 
     #[test]
@@ -1105,7 +1186,10 @@ mod tests {
         assert_eq!(monitor.observe(author, -122_000, 40_000), None);
         assert_eq!(
             monitor.observe(author, -123_000, 69_999),
-            Some(ClockSkewWarning { author, skew_ms: -123_000 })
+            Some(ClockSkewWarning {
+                author,
+                skew_ms: -123_000
+            })
         );
         assert_eq!(monitor.observe(author, -124_000, 70_000), None);
     }
@@ -1125,7 +1209,10 @@ mod tests {
         assert_eq!(monitor.observe(author, 127_000, 319_999), None);
         assert_eq!(
             monitor.observe(author, 128_000, 320_000),
-            Some(ClockSkewWarning { author, skew_ms: 128_000 })
+            Some(ClockSkewWarning {
+                author,
+                skew_ms: 128_000
+            })
         );
     }
 
@@ -1141,11 +1228,17 @@ mod tests {
         assert_eq!(monitor.observe(b, 121_000, 1_000), None);
         assert_eq!(
             monitor.observe(b, 121_000, 2_000),
-            Some(ClockSkewWarning { author: b, skew_ms: 121_000 })
+            Some(ClockSkewWarning {
+                author: b,
+                skew_ms: 121_000
+            })
         );
         assert_eq!(
             monitor.observe(a, -121_000, 2_000),
-            Some(ClockSkewWarning { author: a, skew_ms: -121_000 })
+            Some(ClockSkewWarning {
+                author: a,
+                skew_ms: -121_000
+            })
         );
     }
 
@@ -1202,7 +1295,10 @@ mod tests {
         assert!(long.as_str().len() > MAX_RELAY_URL_LEN);
         let addr = EndpointAddr::from_parts(
             id,
-            [TransportAddr::Relay(short.clone()), TransportAddr::Relay(long)],
+            [
+                TransportAddr::Relay(short.clone()),
+                TransportAddr::Relay(long),
+            ],
         );
         let out = sanitize_endpoint_addr(&addr);
         let relays: Vec<_> = out.relay_urls().cloned().collect();
@@ -1222,7 +1318,12 @@ mod tests {
         let secret = SecretKey::generate();
         let topic = [9u8; 32];
         let peer_state = sample_peer_state_for(secret.public());
-        let payload = sign_gossip(&secret, &topic, 1000, GossipMessage::Announce(peer_state.clone()));
+        let payload = sign_gossip(
+            &secret,
+            &topic,
+            1000,
+            GossipMessage::Announce(peer_state.clone()),
+        );
 
         let serialized = serde_json::to_string(&payload).unwrap();
         let deserialized: GossipPayload = serde_json::from_str(&serialized).unwrap();
@@ -1252,7 +1353,13 @@ mod tests {
         };
         let serialized = serde_json::to_string(&original).unwrap();
         let deserialized: GossipMessage = serde_json::from_str(&serialized).unwrap();
-        if let GossipMessage::Chat { name, text, ts, attachment } = deserialized {
+        if let GossipMessage::Chat {
+            name,
+            text,
+            ts,
+            attachment,
+        } = deserialized
+        {
             assert_eq!(name, "Alice");
             assert_eq!(text, "Hello");
             assert_eq!(ts, 123456789);
@@ -1305,7 +1412,10 @@ mod tests {
         // defaulting the attachment to None (serde(default)).
         let legacy = r#"{"Chat":{"name":"Old","text":"hi","ts":7}}"#;
         let parsed: GossipMessage = serde_json::from_str(legacy).unwrap();
-        if let GossipMessage::Chat { name, attachment, .. } = parsed {
+        if let GossipMessage::Chat {
+            name, attachment, ..
+        } = parsed
+        {
             assert_eq!(name, "Old");
             assert_eq!(attachment, None);
         } else {
@@ -1368,7 +1478,10 @@ mod tests {
         let secret = SecretKey::generate();
         let topic = [1u8; 32];
         let p = sign_gossip(&secret, &topic, 5_000, GossipMessage::Leave);
-        assert_eq!(verify_gossip(&p, &topic, 5_000, GOSSIP_FRESHNESS_MS), Ok(()));
+        assert_eq!(
+            verify_gossip(&p, &topic, 5_000, GOSSIP_FRESHNESS_MS),
+            Ok(())
+        );
     }
 
     #[test]
@@ -1392,7 +1505,12 @@ mod tests {
         let secret = SecretKey::generate();
         let topic = [4u8; 32];
         let mut p = sign_gossip(&secret, &topic, 5_000, GossipMessage::Leave);
-        p.msg = GossipMessage::Chat { name: "x".into(), text: "y".into(), ts: 5_000, attachment: None };
+        p.msg = GossipMessage::Chat {
+            name: "x".into(),
+            text: "y".into(),
+            ts: 5_000,
+            attachment: None,
+        };
         assert_eq!(
             verify_gossip(&p, &topic, 5_000, GOSSIP_FRESHNESS_MS),
             Err(GossipReject::BadSignature)
@@ -1418,16 +1536,34 @@ mod tests {
         let p = sign_gossip(&secret, &topic, 1_000_000, GossipMessage::Leave);
         // Far in the past relative to "now" → stale (replay).
         assert_eq!(
-            verify_gossip(&p, &topic, 1_000_000 + GOSSIP_FRESHNESS_MS + 1, GOSSIP_FRESHNESS_MS),
+            verify_gossip(
+                &p,
+                &topic,
+                1_000_000 + GOSSIP_FRESHNESS_MS + 1,
+                GOSSIP_FRESHNESS_MS
+            ),
             Err(GossipReject::OutOfWindow)
         );
         // Implausibly future.
         assert_eq!(
-            verify_gossip(&p, &topic, 1_000_000 - GOSSIP_FRESHNESS_MS - 1, GOSSIP_FRESHNESS_MS),
+            verify_gossip(
+                &p,
+                &topic,
+                1_000_000 - GOSSIP_FRESHNESS_MS - 1,
+                GOSSIP_FRESHNESS_MS
+            ),
             Err(GossipReject::OutOfWindow)
         );
         // Within the window (clock skew tolerance) → accepted.
-        assert!(verify_gossip(&p, &topic, 1_000_000 + GOSSIP_FRESHNESS_MS - 1, GOSSIP_FRESHNESS_MS).is_ok());
+        assert!(
+            verify_gossip(
+                &p,
+                &topic,
+                1_000_000 + GOSSIP_FRESHNESS_MS - 1,
+                GOSSIP_FRESHNESS_MS
+            )
+            .is_ok()
+        );
     }
 
     #[test]
@@ -1449,10 +1585,30 @@ mod tests {
         let author = fresh_id();
         let mut seen = HashMap::new();
 
-        assert!(admit_state_mutation(&mut seen, author, &GossipMessage::Leave, 10));
-        assert!(!admit_state_mutation(&mut seen, author, &GossipMessage::Leave, 10));
-        assert!(!admit_state_mutation(&mut seen, author, &GossipMessage::Leave, 9));
-        assert!(admit_state_mutation(&mut seen, author, &GossipMessage::Leave, 11));
+        assert!(admit_state_mutation(
+            &mut seen,
+            author,
+            &GossipMessage::Leave,
+            10
+        ));
+        assert!(!admit_state_mutation(
+            &mut seen,
+            author,
+            &GossipMessage::Leave,
+            10
+        ));
+        assert!(!admit_state_mutation(
+            &mut seen,
+            author,
+            &GossipMessage::Leave,
+            9
+        ));
+        assert!(admit_state_mutation(
+            &mut seen,
+            author,
+            &GossipMessage::Leave,
+            11
+        ));
 
         let announce = GossipMessage::Announce(sample_peer_state_for(author));
         assert!(admit_state_mutation(&mut seen, author, &announce, 10));
@@ -1465,13 +1621,26 @@ mod tests {
     fn state_mutation_replay_gate_leaves_chat_ordering_untouched() {
         let author = fresh_id();
         let mut seen = HashMap::new();
-        let later_chat = GossipMessage::Chat { name: "A".into(), text: "later".into(), ts: 200, attachment: None };
-        let earlier_chat = GossipMessage::Chat { name: "A".into(), text: "earlier".into(), ts: 100, attachment: None };
+        let later_chat = GossipMessage::Chat {
+            name: "A".into(),
+            text: "later".into(),
+            ts: 200,
+            attachment: None,
+        };
+        let earlier_chat = GossipMessage::Chat {
+            name: "A".into(),
+            text: "earlier".into(),
+            ts: 100,
+            attachment: None,
+        };
 
         assert!(admit_state_mutation(&mut seen, author, &later_chat, 200));
         assert!(admit_state_mutation(&mut seen, author, &earlier_chat, 100));
         assert!(admit_state_mutation(&mut seen, author, &later_chat, 200));
-        assert!(seen.is_empty(), "chat must not populate the state-mutation replay map");
+        assert!(
+            seen.is_empty(),
+            "chat must not populate the state-mutation replay map"
+        );
     }
 
     #[test]
@@ -1481,8 +1650,18 @@ mod tests {
         let mut seen = HashMap::new();
         let announce = GossipMessage::Announce(sample_peer_state_for(author));
 
-        assert!(admit_state_mutation(&mut seen, author, &GossipMessage::Leave, 5));
+        assert!(admit_state_mutation(
+            &mut seen,
+            author,
+            &GossipMessage::Leave,
+            5
+        ));
         assert!(admit_state_mutation(&mut seen, author, &announce, 5));
-        assert!(admit_state_mutation(&mut seen, other, &GossipMessage::Leave, 5));
+        assert!(admit_state_mutation(
+            &mut seen,
+            other,
+            &GossipMessage::Leave,
+            5
+        ));
     }
 }

src/network/iroh_impl.rs

@@ -1,16 +1,16 @@
-use crate::network::{NetworkTransport, NetError, ConnEvent};
-use iroh::{Endpoint, EndpointId};
-use iroh::endpoint::{Connection, ConnectionError, VarInt};
+use crate::network::{ConnEvent, NetError, NetworkTransport};
+use async_trait::async_trait;
 use bytes::Bytes;
+use iroh::endpoint::{Connection, ConnectionError, VarInt};
+use iroh::{Endpoint, EndpointId};
+use std::collections::{HashMap, HashSet};
+use std::sync::{Arc, Mutex as StdMutex};
+use std::time::Duration;
 use tokio::sync::mpsc;
 use tokio::sync::mpsc::Receiver;
-use std::sync::{Arc, Mutex as StdMutex};
-use std::collections::{HashMap, HashSet};
-use std::time::Duration;
-use async_trait::async_trait;
 
-use crate::protocol::{AUDIO_ALPN, FILES_ALPN};
 use crate::files::{AttachmentId, ChatAttachment};
+use crate::protocol::{AUDIO_ALPN, FILES_ALPN};
 
 /// Per-peer datagram send queue depth. Audio is real-time, so a backlog is
 /// useless latency — keep it shallow and drop the oldest frame when full.
@@ -111,7 +111,13 @@ impl Shared {
         let shared = self.clone();
         let supervisor = tokio::spawn(supervise(shared, peer_id, inbound_rx));
         let inbound_tx_ret = inbound_tx.clone();
-        peers.insert(peer_id, PeerHandle { supervisor, inbound_tx });
+        peers.insert(
+            peer_id,
+            PeerHandle {
+                supervisor,
+                inbound_tx,
+            },
+        );
         crate::log_msg(&format!("Transport: supervising peer {:?}", peer_id));
         inbound_tx_ret
     }
@@ -123,7 +129,10 @@ impl Shared {
         self.addrs.lock().unwrap().remove(&peer_id);
         if let Some(handle) = self.peers.lock().await.remove(&peer_id) {
             handle.supervisor.abort();
-            crate::log_msg(&format!("Transport: stopped supervising peer {:?}", peer_id));
+            crate::log_msg(&format!(
+                "Transport: stopped supervising peer {:?}",
+                peer_id
+            ));
         }
     }
 
@@ -208,12 +217,15 @@ async fn supervise(
     let mut backoff = INITIAL_BACKOFF;
 
     // Show "connecting" until the first link is actually up.
-    let _ = shared.conn_events_tx.try_send(ConnEvent::Connecting(peer_id));
+    let _ = shared
+        .conn_events_tx
+        .try_send(ConnEvent::Connecting(peer_id));
 
-    let mut conn = match obtain_conn(&shared, peer_id, is_dialer, &mut inbound_rx, &mut backoff).await {
-        Some(conn) => conn,
-        None => return, // retired before we ever connected
-    };
+    let mut conn =
+        match obtain_conn(&shared, peer_id, is_dialer, &mut inbound_rx, &mut backoff).await {
+            Some(conn) => conn,
+            None => return, // retired before we ever connected
+        };
 
     loop {
         // A healthy link resets the dialer's backoff for the next outage.
@@ -223,8 +235,14 @@ async fn supervise(
         shared.senders.lock().unwrap().insert(peer_id, send_tx);
         // Publish the live connection so an intentional leave can close it with
         // the goodbye code.
-        shared.live_conns.lock().unwrap().insert(peer_id, conn.clone());
-        let _ = shared.conn_events_tx.try_send(ConnEvent::Connected(peer_id));
+        shared
+            .live_conns
+            .lock()
+            .unwrap()
+            .insert(peer_id, conn.clone());
+        let _ = shared
+            .conn_events_tx
+            .try_send(ConnEvent::Connected(peer_id));
         crate::log_msg(&format!("Transport: peer {:?} link up", peer_id));
 
         // Run until the link dies, a replacement arrives, or we're retired. The
@@ -272,21 +290,36 @@ async fn supervise(
         match wake {
             Wake::Shutdown => return,
             Wake::Replacement(new_conn) => {
-                crate::log_msg(&format!("Transport: peer {:?} replaced with new inbound link", peer_id));
-                let _ = shared.conn_events_tx.try_send(ConnEvent::Connecting(peer_id));
+                crate::log_msg(&format!(
+                    "Transport: peer {:?} replaced with new inbound link",
+                    peer_id
+                ));
+                let _ = shared
+                    .conn_events_tx
+                    .try_send(ConnEvent::Connecting(peer_id));
                 conn = new_conn;
             }
             Wake::Closed(reason) => {
                 // A graceful application close means the peer left on purpose —
                 // don't reconnect; tell the core to evict it now.
                 if is_graceful_leave(&reason) {
-                    crate::log_msg(&format!("Transport: peer {:?} left gracefully ({:?})", peer_id, reason));
+                    crate::log_msg(&format!(
+                        "Transport: peer {:?} left gracefully ({:?})",
+                        peer_id, reason
+                    ));
                     let _ = shared.conn_events_tx.try_send(ConnEvent::Left(peer_id));
                     return;
                 }
-                crate::log_msg(&format!("Transport: peer {:?} link dropped; reconnecting", peer_id));
-                let _ = shared.conn_events_tx.try_send(ConnEvent::Connecting(peer_id));
-                conn = match obtain_conn(&shared, peer_id, is_dialer, &mut inbound_rx, &mut backoff).await {
+                crate::log_msg(&format!(
+                    "Transport: peer {:?} link dropped; reconnecting",
+                    peer_id
+                ));
+                let _ = shared
+                    .conn_events_tx
+                    .try_send(ConnEvent::Connecting(peer_id));
+                conn = match obtain_conn(&shared, peer_id, is_dialer, &mut inbound_rx, &mut backoff)
+                    .await
+                {
                     Some(conn) => conn,
                     None => return, // retired while reconnecting
                 };
@@ -405,7 +438,10 @@ impl iroh::protocol::ProtocolHandler for AudioRouter {
             // only happens if links are churning, and the supervisor gets the next one.
             let inbound_tx = shared.ensure_supervisor(peer_id).await;
             if inbound_tx.try_send(connection).is_err() {
-                crate::log_msg(&format!("Transport: dropped inbound link from {:?} (queue full)", peer_id));
+                crate::log_msg(&format!(
+                    "Transport: dropped inbound link from {:?} (queue full)",
+                    peer_id
+                ));
             }
             Ok(())
         }
@@ -545,7 +581,14 @@ impl IrohTransport {
     /// all supervisors so none linger redialing the about-to-close endpoint.
     /// Call this before shutting the router down.
     pub async fn leave(&self) {
-        let conns: Vec<Connection> = self.shared.live_conns.lock().unwrap().drain().map(|(_, c)| c).collect();
+        let conns: Vec<Connection> = self
+            .shared
+            .live_conns
+            .lock()
+            .unwrap()
+            .drain()
+            .map(|(_, c)| c)
+            .collect();
         for conn in &conns {
             conn.close(VarInt::from_u32(GOODBYE_CODE), b"leave");
         }
@@ -639,7 +682,9 @@ impl IrohTransport {
             .map_err(|_| NetError::Other("file fetch: read timed out".to_string()))?
             .map_err(|e| NetError::Other(format!("file fetch: read failed: {e}")))?;
         if bytes.is_empty() {
-            return Err(NetError::Other("file fetch: sender no longer has the file".to_string()));
+            return Err(NetError::Other(
+                "file fetch: sender no longer has the file".to_string(),
+            ));
         }
         Ok(bytes)
     }

src/network/mod.rs

@@ -1,10 +1,10 @@
-use iroh::{EndpointId, EndpointAddr};
+use async_trait::async_trait;
 use bytes::Bytes;
+use iroh::{EndpointAddr, EndpointId};
+use serde::{Deserialize, Serialize};
+use std::str::FromStr;
 use thiserror::Error;
 use tokio::sync::mpsc::Receiver;
-use async_trait::async_trait;
-use serde::{Serialize, Deserialize};
-use std::str::FromStr;
 
 #[derive(Error, Debug)]
 pub enum NetError {
@@ -148,7 +148,10 @@ pub enum RoomEvent {
     /// A validly signed gossip payload was rejected only because its timestamp is
     /// outside the replay-protection window. The peer is not in the roster yet,
     /// so this surfaces as a room-level warning instead of a peer-card state.
-    ClockSkewSuspected { author: EndpointId, skew_ms: i64 },
+    ClockSkewSuspected {
+        author: EndpointId,
+        skew_ms: i64,
+    },
     /// A peer sent a room text-chat message. Carries the sender's id, their
     /// display name (embedded so it shows even without a presence entry), the
     /// text, and a sender-stamped millisecond timestamp.
@@ -203,10 +206,12 @@ impl PeerSpeakTicket {
     /// is idempotent.
     pub fn restamp(ticket_str: &str, my_addr: iroh::EndpointAddr) -> String {
         match ticket_str.parse::<PeerSpeakTicket>() {
-            Ok(t) => {
-                PeerSpeakTicket { host_addr: my_addr, topic_id: t.topic_id, name: t.name }
-                    .to_string()
+            Ok(t) => PeerSpeakTicket {
+                host_addr: my_addr,
+                topic_id: t.topic_id,
+                name: t.name,
             }
+            .to_string(),
             Err(_) => ticket_str.to_string(),
         }
     }
@@ -215,7 +220,10 @@ impl PeerSpeakTicket {
     /// can't be parsed or carries no label. Pure; used to label the gathering both
     /// in the room UI and in the presence we report to friends.
     pub fn label_of(ticket_str: &str) -> String {
-        ticket_str.parse::<PeerSpeakTicket>().map(|t| t.name).unwrap_or_default()
+        ticket_str
+            .parse::<PeerSpeakTicket>()
+            .map(|t| t.name)
+            .unwrap_or_default()
     }
 
     /// The room's `topic_id` embedded in a ticket string, or `None` if the ticket
@@ -223,7 +231,10 @@ impl PeerSpeakTicket {
     /// the recents list (the host address and label change between members/sessions,
     /// but the topic uniquely identifies the gathering).
     pub fn topic_of(ticket_str: &str) -> Option<[u8; 32]> {
-        ticket_str.parse::<PeerSpeakTicket>().ok().map(|t| t.topic_id)
+        ticket_str
+            .parse::<PeerSpeakTicket>()
+            .ok()
+            .map(|t| t.topic_id)
     }
 }
 
@@ -246,8 +257,8 @@ impl FromStr for PeerSpeakTicket {
     fn from_str(s: &str) -> Result<Self, Self::Err> {
         let decoded = base64::Engine::decode(&base64::engine::general_purpose::URL_SAFE_NO_PAD, s)
             .map_err(|e| NetError::InvalidTicket(e.to_string()))?;
-        let ticket: PeerSpeakTicket = serde_json::from_slice(&decoded)
-            .map_err(|e| NetError::InvalidTicket(e.to_string()))?;
+        let ticket: PeerSpeakTicket =
+            serde_json::from_slice(&decoded).map_err(|e| NetError::InvalidTicket(e.to_string()))?;
         Ok(ticket)
     }
 }
@@ -327,13 +338,13 @@ pub trait RoomState: Send + Sync {
     async fn subscribe_events(&self) -> Result<Receiver<RoomEvent>, NetError>;
 }
 
-pub mod iroh_impl;
 pub mod gossip;
+pub mod iroh_impl;
 
 #[cfg(test)]
 mod tests {
     use super::*;
-    use iroh::{SecretKey, EndpointAddr};
+    use iroh::{EndpointAddr, SecretKey};
 
     fn sample_peer_state() -> PeerState {
         let secret = SecretKey::generate();
@@ -371,9 +382,12 @@ mod tests {
         let host = SecretKey::generate().public();
         let topic_id = [3u8; 32];
         // A labelled ticket: restamp keeps the label, label_of reads it.
-        let labelled =
-            PeerSpeakTicket { host_addr: EndpointAddr::from(host), topic_id, name: "HangOut".into() }
-                .to_string();
+        let labelled = PeerSpeakTicket {
+            host_addr: EndpointAddr::from(host),
+            topic_id,
+            name: "HangOut".into(),
+        }
+        .to_string();
         assert_eq!(PeerSpeakTicket::label_of(&labelled), "HangOut");
         let member = SecretKey::generate().public();
         let restamped = PeerSpeakTicket::restamp(&labelled, EndpointAddr::from(member));
@@ -410,10 +424,8 @@ mod tests {
 
         // valid URL-safe-base64 that decodes to non-JSON bytes
         let bad_json = b"hello world";
-        let encoded = base64::Engine::encode(
-            &base64::engine::general_purpose::URL_SAFE_NO_PAD,
-            bad_json,
-        );
+        let encoded =
+            base64::Engine::encode(&base64::engine::general_purpose::URL_SAFE_NO_PAD, bad_json);
         let res3 = encoded.parse::<PeerSpeakTicket>();
         assert!(matches!(res3, Err(NetError::InvalidTicket(_))));
     }
@@ -424,9 +436,12 @@ mod tests {
         let host = SecretKey::generate().public();
         let member = SecretKey::generate().public();
         let topic_id = [42u8; 32];
-        let original =
-            PeerSpeakTicket { host_addr: EndpointAddr::from(host), topic_id, name: "HangOut".into() }
-                .to_string();
+        let original = PeerSpeakTicket {
+            host_addr: EndpointAddr::from(host),
+            topic_id,
+            name: "HangOut".into(),
+        }
+        .to_string();
 
         let restamped_str = PeerSpeakTicket::restamp(&original, EndpointAddr::from(member));
         let restamped = restamped_str.parse::<PeerSpeakTicket>().unwrap();
@@ -441,18 +456,27 @@ mod tests {
     fn test_restamp_is_idempotent_for_same_addr() {
         let me = SecretKey::generate().public();
         let topic_id = [7u8; 32];
-        let mine =
-            PeerSpeakTicket { host_addr: EndpointAddr::from(me), topic_id, name: String::new() }
-                .to_string();
+        let mine = PeerSpeakTicket {
+            host_addr: EndpointAddr::from(me),
+            topic_id,
+            name: String::new(),
+        }
+        .to_string();
         // Re-stamping my own ticket with my own addr changes nothing.
-        assert_eq!(PeerSpeakTicket::restamp(&mine, EndpointAddr::from(me)), mine);
+        assert_eq!(
+            PeerSpeakTicket::restamp(&mine, EndpointAddr::from(me)),
+            mine
+        );
     }
 
     #[test]
     fn test_restamp_passes_through_unparseable() {
         let me = SecretKey::generate().public();
         // A malformed ticket is returned unchanged (the join will fail anyway).
-        assert_eq!(PeerSpeakTicket::restamp("not-a-ticket", EndpointAddr::from(me)), "not-a-ticket");
+        assert_eq!(
+            PeerSpeakTicket::restamp("not-a-ticket", EndpointAddr::from(me)),
+            "not-a-ticket"
+        );
     }
 
     #[test]

src/notify.rs

@@ -61,7 +61,6 @@ pub fn should_play(master_enabled: bool, sound_enabled: bool) -> bool {
     master_enabled && sound_enabled
 }
 
-
 /// A notification event with a distinct chime.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub enum Sound {
@@ -305,10 +304,7 @@ mod tests {
             escape_powershell_single_quoted(r"C:\Users\O'Brien\chime.wav"),
             r"C:\Users\O''Brien\chime.wav"
         );
-        assert_eq!(
-            escape_powershell_single_quoted("a'b'c"),
-            "a''b''c"
-        );
+        assert_eq!(escape_powershell_single_quoted("a'b'c"), "a''b''c");
     }
 
     #[test]
@@ -338,7 +334,10 @@ mod tests {
             // bare `~` -> home dir
             assert_eq!(expand_tilde("~"), home);
             // `~/sub/dir/file.wav` -> home joined with `sub/dir/file.wav`
-            assert_eq!(expand_tilde("~/sub/dir/file.wav"), home.join("sub/dir/file.wav"));
+            assert_eq!(
+                expand_tilde("~/sub/dir/file.wav"),
+                home.join("sub/dir/file.wav")
+            );
         }
         // absolute path (`/etc/foo.wav`) -> unchanged
         assert_eq!(expand_tilde("/etc/foo.wav"), PathBuf::from("/etc/foo.wav"));
@@ -351,10 +350,19 @@ mod tests {
         // leading/trailing whitespace is trimmed
         if let Some(home) = dirs::home_dir() {
             assert_eq!(expand_tilde("  ~  "), home);
-            assert_eq!(expand_tilde("  ~/sub/dir/file.wav  "), home.join("sub/dir/file.wav"));
+            assert_eq!(
+                expand_tilde("  ~/sub/dir/file.wav  "),
+                home.join("sub/dir/file.wav")
+            );
         }
-        assert_eq!(expand_tilde("  /etc/foo.wav  "), PathBuf::from("/etc/foo.wav"));
-        assert_eq!(expand_tilde("  foo/bar.wav  "), PathBuf::from("foo/bar.wav"));
+        assert_eq!(
+            expand_tilde("  /etc/foo.wav  "),
+            PathBuf::from("/etc/foo.wav")
+        );
+        assert_eq!(
+            expand_tilde("  foo/bar.wav  "),
+            PathBuf::from("foo/bar.wav")
+        );
     }
 
     #[test]

src/playlist.rs

@@ -49,9 +49,7 @@ pub fn parse_playlist(contents: &str, base_dir: &Path, kind: PlaylistKind) -> Ve
 
 fn playlist_entry_path(entry: &str, base_dir: &Path) -> Option<PathBuf> {
     let lower = entry.to_ascii_lowercase();
-    if lower.starts_with("http://")
-        || lower.starts_with("https://")
-        || lower.starts_with("ftp://")
+    if lower.starts_with("http://") || lower.starts_with("https://") || lower.starts_with("ftp://")
     {
         return None;
     }
@@ -107,7 +105,10 @@ File3=/var/audio/two.MP3
     #[test]
     fn playlist_kind_is_case_insensitive() {
         assert_eq!(playlist_kind(Path::new("mix.M3U")), Some(PlaylistKind::M3u));
-        assert_eq!(playlist_kind(Path::new("mix.m3u8")), Some(PlaylistKind::M3u));
+        assert_eq!(
+            playlist_kind(Path::new("mix.m3u8")),
+            Some(PlaylistKind::M3u)
+        );
         assert_eq!(playlist_kind(Path::new("mix.PLS")), Some(PlaylistKind::Pls));
         assert_eq!(playlist_kind(Path::new("mix.txt")), None);
     }

src/presence.rs

@@ -36,8 +36,11 @@ pub enum PresenceMode {
 
 impl PresenceMode {
     /// All postures, default first — the option list for the Settings/home picker.
-    pub const ALL: [PresenceMode; 3] =
-        [PresenceMode::Normal, PresenceMode::Invisible, PresenceMode::Discoverable];
+    pub const ALL: [PresenceMode; 3] = [
+        PresenceMode::Normal,
+        PresenceMode::Invisible,
+        PresenceMode::Discoverable,
+    ];
 
     /// Whether this posture publishes to discovery (the only mode that does).
     pub fn publishes_to_discovery(self) -> bool {
@@ -193,7 +196,11 @@ mod tests {
         assert!(!should_answer(&friend, &friends, PresenceMode::Invisible));
         // Stranger is NEVER answered, in any mode.
         assert!(!should_answer(&stranger, &friends, PresenceMode::Normal));
-        assert!(!should_answer(&stranger, &friends, PresenceMode::Discoverable));
+        assert!(!should_answer(
+            &stranger,
+            &friends,
+            PresenceMode::Discoverable
+        ));
         assert!(!should_answer(&stranger, &friends, PresenceMode::Invisible));
     }
 
@@ -214,7 +221,10 @@ mod tests {
             ControlMsg::Ping,
             ControlMsg::Pong { room: None },
             ControlMsg::Pong {
-                room: Some(RoomPresence { name: "HangOut".into(), ticket: "abc".into() }),
+                room: Some(RoomPresence {
+                    name: "HangOut".into(),
+                    ticket: "abc".into(),
+                }),
             },
         ];
         for msg in cases {
@@ -245,19 +255,37 @@ mod tests {
         );
         // Valid ticket -> InRoom with a sanitized name.
         let t = valid_ticket(friend);
-        let got = interpret_pong(&ControlMsg::Pong {
-            room: Some(RoomPresence { name: "HangOut".into(), ticket: t.clone() }),
-        }, friend);
-        assert_eq!(got, Some(FriendPresence::InRoom { name: "HangOut".into(), ticket: t }));
+        let got = interpret_pong(
+            &ControlMsg::Pong {
+                room: Some(RoomPresence {
+                    name: "HangOut".into(),
+                    ticket: t.clone(),
+                }),
+            },
+            friend,
+        );
+        assert_eq!(
+            got,
+            Some(FriendPresence::InRoom {
+                name: "HangOut".into(),
+                ticket: t
+            })
+        );
     }
 
     #[test]
     fn interpret_pong_downgrades_a_garbage_ticket_to_online() {
         // A friend reporting a room with an unparseable ticket is treated as just
         // Online — no dead/hostile Join button is surfaced.
-        let got = interpret_pong(&ControlMsg::Pong {
-            room: Some(RoomPresence { name: "Trap".into(), ticket: "not-a-ticket".into() }),
-        }, id());
+        let got = interpret_pong(
+            &ControlMsg::Pong {
+                room: Some(RoomPresence {
+                    name: "Trap".into(),
+                    ticket: "not-a-ticket".into(),
+                }),
+            },
+            id(),
+        );
         assert_eq!(got, Some(FriendPresence::Online));
     }
 
@@ -266,9 +294,15 @@ mod tests {
         let friend = id();
         let attacker = id();
         let t = valid_ticket(attacker);
-        let got = interpret_pong(&ControlMsg::Pong {
-            room: Some(RoomPresence { name: "Redirect".into(), ticket: t }),
-        }, friend);
+        let got = interpret_pong(
+            &ControlMsg::Pong {
+                room: Some(RoomPresence {
+                    name: "Redirect".into(),
+                    ticket: t,
+                }),
+            },
+            friend,
+        );
         assert_eq!(got, Some(FriendPresence::Online));
     }
 
@@ -287,10 +321,18 @@ mod tests {
         let t = valid_ticket(friend);
         assert_eq!(
             presence_from_probe(Some((
-                &ControlMsg::Pong { room: Some(RoomPresence { name: "Den".into(), ticket: t.clone() }) },
+                &ControlMsg::Pong {
+                    room: Some(RoomPresence {
+                        name: "Den".into(),
+                        ticket: t.clone()
+                    })
+                },
                 friend,
             ))),
-            FriendPresence::InRoom { name: "Den".into(), ticket: t }
+            FriendPresence::InRoom {
+                name: "Den".into(),
+                ticket: t
+            }
         );
         // A non-reply (a stray Ping) is not a presence -> Offline, never a false Online.
         assert_eq!(
@@ -304,9 +346,15 @@ mod tests {
         // Control/bidi characters in a peer-supplied name are stripped.
         let friend = id();
         let t = valid_ticket(friend);
-        let got = interpret_pong(&ControlMsg::Pong {
-            room: Some(RoomPresence { name: "Hang\u{202e}Out\u{0007}".into(), ticket: t.clone() }),
-        }, friend);
+        let got = interpret_pong(
+            &ControlMsg::Pong {
+                room: Some(RoomPresence {
+                    name: "Hang\u{202e}Out\u{0007}".into(),
+                    ticket: t.clone(),
+                }),
+            },
+            friend,
+        );
         match got {
             Some(FriendPresence::InRoom { name, .. }) => {
                 assert!(!name.contains('\u{202e}'), "bidi override must be stripped");

src/presence_net.rs

@@ -54,7 +54,10 @@ fn decode(bytes: &[u8]) -> Result<ControlMsg> {
 /// malformed) — the caller treats that as "appears offline". `peer` is usually a
 /// bare [`EndpointId`] (friends store the stable id); a full [`EndpointAddr`] is
 /// also accepted (and used by hermetic tests).
-pub async fn probe(endpoint: &Endpoint, peer: impl Into<EndpointAddr>) -> Result<(EndpointId, ControlMsg)> {
+pub async fn probe(
+    endpoint: &Endpoint,
+    peer: impl Into<EndpointAddr>,
+) -> Result<(EndpointId, ControlMsg)> {
     let conn = tokio::time::timeout(IO_TIMEOUT, endpoint.connect(peer, FRIENDS_ALPN))
         .await
         .context("timed out connecting to peer")?
@@ -62,7 +65,10 @@ pub async fn probe(endpoint: &Endpoint, peer: impl Into<EndpointAddr>) -> Result
     let from = conn.remote_id();
 
     let io = async {
-        let (mut send, mut recv) = conn.open_bi().await.context("failed to open control stream")?;
+        let (mut send, mut recv) = conn
+            .open_bi()
+            .await
+            .context("failed to open control stream")?;
         send.write_all(&encode(&ControlMsg::Ping)?)
             .await
             .context("failed to write ping")?;
@@ -118,7 +124,10 @@ async fn exchange(conn: &iroh::endpoint::Connection, handler: &Handler) -> Resul
 
     let io = async {
         let (mut send, mut recv) = conn.accept_bi().await.context("failed to accept stream")?;
-        let bytes = recv.read_to_end(MAX_MSG).await.context("failed to read ping")?;
+        let bytes = recv
+            .read_to_end(MAX_MSG)
+            .await
+            .context("failed to read ping")?;
         match decode(&bytes)? {
             ControlMsg::Ping => {}
             other => bail!("expected a ping, got {other:?}"),
@@ -211,7 +220,10 @@ mod tests {
         let handler: Handler = Arc::new(move |from| {
             if from == allowed {
                 Some(ControlMsg::Pong {
-                    room: Some(RoomPresence { name: "HangOut".into(), ticket: "t".into() }),
+                    room: Some(RoomPresence {
+                        name: "HangOut".into(),
+                        ticket: "t".into(),
+                    }),
                 })
             } else {
                 None // stranger -> no reply
@@ -221,10 +233,11 @@ mod tests {
         let serve_task = tokio::spawn(async move { serve(server_ep, handler).await });
 
         // The allowed prober gets a Pong with the room.
-        let (from, pong) = tokio::time::timeout(Duration::from_secs(15), probe(&prober, server_addr.clone()))
-            .await
-            .expect("probe timed out")
-            .expect("probe failed");
+        let (from, pong) =
+            tokio::time::timeout(Duration::from_secs(15), probe(&prober, server_addr.clone()))
+                .await
+                .expect("probe timed out")
+                .expect("probe failed");
         assert_eq!(from, server_addr.id);
         match pong {
             ControlMsg::Pong { room: Some(r) } => assert_eq!(r.name, "HangOut"),

src/protocol.rs

@@ -83,10 +83,22 @@ mod tests {
     /// so a version bump can't silently forget to update the wire string.
     #[test]
     fn alpns_match_their_proto_versions() {
-        assert_eq!(AUDIO_ALPN, format!("peerspeak/audio/{AUDIO_PROTO}").as_bytes());
-        assert_eq!(FRIENDS_ALPN, format!("peerspeak/friends/{FRIENDS_PROTO}").as_bytes());
-        assert_eq!(FILES_ALPN, format!("peerspeak/files/{FILES_PROTO}").as_bytes());
-        assert_eq!(GOSSIP_SIG_DOMAIN, format!("peerspeak-gossip-v{GOSSIP_PROTO}"));
+        assert_eq!(
+            AUDIO_ALPN,
+            format!("peerspeak/audio/{AUDIO_PROTO}").as_bytes()
+        );
+        assert_eq!(
+            FRIENDS_ALPN,
+            format!("peerspeak/friends/{FRIENDS_PROTO}").as_bytes()
+        );
+        assert_eq!(
+            FILES_ALPN,
+            format!("peerspeak/files/{FILES_PROTO}").as_bytes()
+        );
+        assert_eq!(
+            GOSSIP_SIG_DOMAIN,
+            format!("peerspeak-gossip-v{GOSSIP_PROTO}")
+        );
     }
 
     #[test]
@@ -95,7 +107,11 @@ mod tests {
         let mut b = a;
         b[5] = 10;
         assert_eq!(versioned_topic(a), versioned_topic(a), "deterministic");
-        assert_ne!(versioned_topic(a), versioned_topic(b), "distinct rooms stay distinct");
+        assert_ne!(
+            versioned_topic(a),
+            versioned_topic(b),
+            "distinct rooms stay distinct"
+        );
     }
 
     #[test]

src/recents.rs

@@ -51,7 +51,14 @@ fn same_room(a: &str, b: &str) -> bool {
 /// supplies `now` (unix seconds) and persists the list afterwards.
 pub fn push_recent(list: &mut Vec<Recent>, name: String, ticket: String, now: u64) {
     list.retain(|r| !same_room(&r.ticket, &ticket));
-    list.insert(0, Recent { name, ticket, joined_at: now });
+    list.insert(
+        0,
+        Recent {
+            name,
+            ticket,
+            joined_at: now,
+        },
+    );
     list.truncate(RECENTS_MAX);
 }
 
@@ -86,8 +93,12 @@ mod tests {
     /// Build a real, parseable ticket for a fresh room with the given label.
     fn ticket(name: &str, topic: [u8; 32]) -> String {
         let host = SecretKey::generate().public();
-        PeerSpeakTicket { host_addr: EndpointAddr::from(host), topic_id: topic, name: name.into() }
-            .to_string()
+        PeerSpeakTicket {
+            host_addr: EndpointAddr::from(host),
+            topic_id: topic,
+            name: name.into(),
+        }
+        .to_string()
     }
 
     #[test]

src/sanitize.rs

@@ -85,7 +85,10 @@ pub enum Segment {
 /// Trailing characters commonly adjacent to a URL in prose that should NOT be
 /// part of the link (so "see http://x.com." or "(http://x.com)" linkify cleanly).
 fn is_url_trailing_punct(c: char) -> bool {
-    matches!(c, '.' | ',' | '!' | '?' | ';' | ':' | ')' | ']' | '}' | '>' | '"' | '\'')
+    matches!(
+        c,
+        '.' | ',' | '!' | '?' | ';' | ':' | ')' | ']' | '}' | '>' | '"' | '\''
+    )
 }
 
 /// Find the byte index of the earliest `http://` or `https://` scheme in `s`,
@@ -144,7 +147,10 @@ mod tests {
     fn strips_control_chars_and_collapses_whitespace() {
         // NUL, CR/LF, TAB, and ANSI ESC are control chars → become spaces, then
         // collapse; ends trim.
-        assert_eq!(sanitize_name("  a\u{0}b\r\nc\td\u{1b}[31m  "), "a b c d [31m");
+        assert_eq!(
+            sanitize_name("  a\u{0}b\r\nc\td\u{1b}[31m  "),
+            "a b c d [31m"
+        );
         // A name that is only control/whitespace cleans to empty.
         assert_eq!(sanitize_name("\u{0}\r\n\t   "), "");
     }
@@ -183,7 +189,10 @@ mod tests {
         let mid = "g".repeat(56);
         assert_eq!(sanitize_game_label(&mid).chars().count(), 56);
         let long = "g".repeat(GAME_LABEL_MAX_CHARS + 100);
-        assert_eq!(sanitize_game_label(&long).chars().count(), GAME_LABEL_MAX_CHARS);
+        assert_eq!(
+            sanitize_game_label(&long).chars().count(),
+            GAME_LABEL_MAX_CHARS
+        );
     }
 
     #[test]
@@ -220,7 +229,10 @@ mod tests {
     #[test]
     fn linkify_plain_text_has_no_links() {
         let segs = linkify("just a normal message, nothing here");
-        assert_eq!(segs, vec![Segment::Text("just a normal message, nothing here".into())]);
+        assert_eq!(
+            segs,
+            vec![Segment::Text("just a normal message, nothing here".into())]
+        );
     }
 
     #[test]
@@ -280,7 +292,12 @@ mod tests {
     fn linkify_only_matches_http_schemes() {
         // Non-web schemes and bare domains are NOT linkified (conservative).
         let segs = linkify("email me@x.com or ftp://x.com or visit x.com");
-        assert_eq!(segs, vec![Segment::Text("email me@x.com or ftp://x.com or visit x.com".into())]);
+        assert_eq!(
+            segs,
+            vec![Segment::Text(
+                "email me@x.com or ftp://x.com or visit x.com".into()
+            )]
+        );
     }
 
     #[test]
@@ -293,7 +310,11 @@ mod tests {
             "weird))) http://c.com]]] tail",
             "unicode 世界 http://d.com/路径 more 世界",
         ] {
-            assert_eq!(reassemble(&linkify(msg)), msg, "roundtrip failed for {msg:?}");
+            assert_eq!(
+                reassemble(&linkify(msg)),
+                msg,
+                "roundtrip failed for {msg:?}"
+            );
         }
     }
 }

src/screenshare/mod.rs

@@ -158,9 +158,8 @@ pub fn host_args(audio_app: Option<&str>) -> Vec<String> {
 /// "no valid app selected" — the caller then shares the whole desktop audio.
 pub fn sanitize_app_name(name: &str) -> Option<String> {
     let name = name.trim();
-    let ok = !name.is_empty()
-        && name.len() <= MAX_APP_NAME_LEN
-        && !name.chars().any(|c| c.is_control());
+    let ok =
+        !name.is_empty() && name.len() <= MAX_APP_NAME_LEN && !name.chars().any(|c| c.is_control());
     ok.then(|| name.to_string())
 }
 
@@ -599,7 +598,10 @@ mod tests {
         // i.e. after the `--` end-of-options guard, never parsed as a flag.
         let args = viewer_args("--malicious-flag");
         assert_eq!(args.last().unwrap(), "--malicious-flag", "ticket is last");
-        let guard = args.iter().position(|a| a == "--").expect("`--` guard present");
+        let guard = args
+            .iter()
+            .position(|a| a == "--")
+            .expect("`--` guard present");
         let ticket = args.len() - 1;
         assert!(guard < ticket, "ticket must follow the `--` guard");
         // The real flags are parsed before the guard.
@@ -629,7 +631,13 @@ mod tests {
         // `--strict-audio` so pixelpass never falls back to whole-desktop audio.
         assert_eq!(
             host_args(Some("Firefox")),
-            vec!["--host", "--output", "json", "--app=Firefox", "--strict-audio"]
+            vec![
+                "--host",
+                "--output",
+                "json",
+                "--app=Firefox",
+                "--strict-audio"
+            ]
         );
         // The hyphen-leading name is still bound to --app as a single token;
         // --strict-audio is the trailing flag.
@@ -643,12 +651,18 @@ mod tests {
         // An empty / whitespace / control-laden selection is sanitized away,
         // falling back to whole-desktop capture rather than a broken flag.
         assert_eq!(host_args(Some("   ")), vec!["--host", "--output", "json"]);
-        assert_eq!(host_args(Some("bad\nname")), vec!["--host", "--output", "json"]);
+        assert_eq!(
+            host_args(Some("bad\nname")),
+            vec!["--host", "--output", "json"]
+        );
     }
 
     #[test]
     fn sanitize_app_name_trims_and_rejects_garbage() {
-        assert_eq!(sanitize_app_name("  Firefox \n"), Some("Firefox".to_string()));
+        assert_eq!(
+            sanitize_app_name("  Firefox \n"),
+            Some("Firefox".to_string())
+        );
         assert_eq!(sanitize_app_name(""), None);
         assert_eq!(sanitize_app_name("   "), None);
         assert_eq!(sanitize_app_name("a\tb"), None);
@@ -667,7 +681,11 @@ mod tests {
         ]"#;
         assert_eq!(
             parse_audio_apps(stdout),
-            vec!["Firefox".to_string(), "Spotify".to_string(), "mpv".to_string()]
+            vec![
+                "Firefox".to_string(),
+                "Spotify".to_string(),
+                "mpv".to_string()
+            ]
         );
     }
 
@@ -754,13 +772,19 @@ Install hint: sudo apt install gstreamer1.0-plugins-bad
     #[test]
     fn sanitize_ticket_accepts_pixelpass_endpoint_ticket_shape() {
         let ticket = "endpointaabwxjexzensznfvuudiapn5tyzws3angd2merarm";
-        assert_eq!(sanitize_ticket(format!("  {ticket}\n")), Some(ticket.to_string()));
+        assert_eq!(
+            sanitize_ticket(format!("  {ticket}\n")),
+            Some(ticket.to_string())
+        );
     }
 
     #[test]
     fn sanitize_ticket_rejects_oversized_or_garbage_ticket() {
         assert_eq!(sanitize_ticket("not-a-ticket".into()), None);
-        assert_eq!(sanitize_ticket(format!("endpoint{}", "a".repeat(MAX_TICKET_LEN))), None);
+        assert_eq!(
+            sanitize_ticket(format!("endpoint{}", "a".repeat(MAX_TICKET_LEN))),
+            None
+        );
         assert_eq!(sanitize_ticket("endpointabc-def".into()), None);
     }
 
@@ -784,7 +808,9 @@ Install hint: sudo apt install gstreamer1.0-plugins-bad
     fn parses_connected_url() {
         assert_eq!(
             parse_pixelpass_event(r#"{"event":"connected","url":"http://127.0.0.1:5500"}"#),
-            Some(PixelpassEvent::Connected("http://127.0.0.1:5500".to_string()))
+            Some(PixelpassEvent::Connected(
+                "http://127.0.0.1:5500".to_string()
+            ))
         );
     }
 
@@ -919,7 +945,10 @@ Install hint: sudo apt install gstreamer1.0-plugins-bad
         let dir = Path::new("bin");
         let candidates: Vec<PathBuf> = pixelpass_path_candidates(dir).into_iter().collect();
         #[cfg(windows)]
-        assert_eq!(candidates, vec![dir.join("pixelpass"), dir.join("pixelpass.exe")]);
+        assert_eq!(
+            candidates,
+            vec![dir.join("pixelpass"), dir.join("pixelpass.exe")]
+        );
         #[cfg(not(windows))]
         assert_eq!(candidates, vec![dir.join("pixelpass")]);
     }

src/theme.rs

@@ -211,7 +211,7 @@ impl AppTheme {
                 overlay: hex(0x6272a4),
                 text: hex(0xf8f8f2),
                 subtext: hex(0xbdc0d4),
-                blue: hex(0xbd93f9),  // Dracula's signature purple as the primary accent
+                blue: hex(0xbd93f9), // Dracula's signature purple as the primary accent
                 lavender: hex(0x8be9fd), // cyan
                 red: hex(0xff5555),
                 maroon: hex(0xff79c6), // pink
@@ -400,7 +400,11 @@ mod tests {
         for theme in AppTheme::ALL {
             let p = theme.palette();
             let sub = contrast_ratio(p.subtext, p.base);
-            assert!(sub >= 3.0, "{}: subtext contrast {sub:.2} < 3.0", theme.label());
+            assert!(
+                sub >= 3.0,
+                "{}: subtext contrast {sub:.2} < 3.0",
+                theme.label()
+            );
             let accent = contrast_ratio(p.blue, p.base);
             assert!(
                 accent >= 3.0,

src/widget/context_input.rs

@@ -9,8 +9,8 @@ use iced::advanced::widget::{self, Widget};
 use iced::advanced::{Layout, Shell};
 use iced::widget::text_input;
 use iced::{
-    alignment, Background, Border, Color, Element, Event, Length, Padding,
-    Pixels, Point, Rectangle, Shadow, Size, Vector,
+    Background, Border, Color, Element, Event, Length, Padding, Pixels, Point, Rectangle, Shadow,
+    Size, Vector, alignment,
 };
 use std::rc::Rc;
 
@@ -27,11 +27,7 @@ pub fn copy_selection(value: &str, start: usize, end: usize) -> Option<String> {
     (start != end).then(|| value.select(start, end).to_string())
 }
 
-pub fn cut_selection(
-    value: &str,
-    start: usize,
-    end: usize,
-) -> (Edit, Option<String>) {
+pub fn cut_selection(value: &str, start: usize, end: usize) -> (Edit, Option<String>) {
     let mut value = text_input::Value::new(value);
     let (start, end) = normalized_range(&value, start, end);
 
@@ -80,18 +76,13 @@ pub fn select_all_range(value: &str) -> (usize, usize) {
     (0, value.len())
 }
 
-fn normalized_range(
-    value: &text_input::Value,
-    start: usize,
-    end: usize,
-) -> (usize, usize) {
+fn normalized_range(value: &text_input::Value, start: usize, end: usize) -> (usize, usize) {
     let len = value.len();
 
     (start.min(end).min(len), start.max(end).min(len))
 }
 
-type InputStyleFn<'a, Theme> =
-    Rc<dyn Fn(&Theme, text_input::Status) -> text_input::Style + 'a>;
+type InputStyleFn<'a, Theme> = Rc<dyn Fn(&Theme, text_input::Status) -> text_input::Style + 'a>;
 
 pub fn context_input<'a, Message, Theme, Renderer>(
     placeholder: &str,
@@ -119,12 +110,8 @@ where
         .locked(true)
 }
 
-pub struct ContextInput<
-    'a,
-    Message,
-    Theme = iced::Theme,
-    Renderer = iced::Renderer,
-> where
+pub struct ContextInput<'a, Message, Theme = iced::Theme, Renderer = iced::Renderer>
+where
     Theme: text_input::Catalog,
     Renderer: text::Renderer,
 {
@@ -137,8 +124,7 @@ pub struct ContextInput<
     style: Option<InputStyleFn<'a, Theme>>,
 }
 
-impl<'a, Message, Theme, Renderer>
-    ContextInput<'a, Message, Theme, Renderer>
+impl<'a, Message, Theme, Renderer> ContextInput<'a, Message, Theme, Renderer>
 where
     Message: Clone + 'a,
     Theme: text_input::Catalog + 'a,
@@ -172,16 +158,13 @@ where
         self
     }
 
-    pub fn on_input(
-        mut self,
-        on_input: impl Fn(String) -> Message + 'a,
-    ) -> Self {
-        let on_input: Rc<dyn Fn(String) -> Message + 'a> =
-            Rc::new(on_input);
+    pub fn on_input(mut self, on_input: impl Fn(String) -> Message + 'a) -> Self {
+        let on_input: Rc<dyn Fn(String) -> Message + 'a> = Rc::new(on_input);
         let input_callback = Rc::clone(&on_input);
 
-        self.input =
-            self.input.on_input(move |value| input_callback.as_ref()(value));
+        self.input = self
+            .input
+            .on_input(move |value| input_callback.as_ref()(value));
         self.on_input = Some(on_input);
         self
     }
@@ -196,16 +179,13 @@ where
         self
     }
 
-    pub fn on_paste(
-        mut self,
-        on_paste: impl Fn(String) -> Message + 'a,
-    ) -> Self {
-        let on_paste: Rc<dyn Fn(String) -> Message + 'a> =
-            Rc::new(on_paste);
+    pub fn on_paste(mut self, on_paste: impl Fn(String) -> Message + 'a) -> Self {
+        let on_paste: Rc<dyn Fn(String) -> Message + 'a> = Rc::new(on_paste);
         let paste_callback = Rc::clone(&on_paste);
 
-        self.input =
-            self.input.on_paste(move |value| paste_callback.as_ref()(value));
+        self.input = self
+            .input
+            .on_paste(move |value| paste_callback.as_ref()(value));
         self.on_paste = Some(on_paste);
         self
     }
@@ -235,18 +215,12 @@ where
         self
     }
 
-    pub fn line_height(
-        mut self,
-        line_height: impl Into<text::LineHeight>,
-    ) -> Self {
+    pub fn line_height(mut self, line_height: impl Into<text::LineHeight>) -> Self {
         self.input = self.input.line_height(line_height);
         self
     }
 
-    pub fn align_x(
-        mut self,
-        alignment: impl Into<alignment::Horizontal>,
-    ) -> Self {
+    pub fn align_x(mut self, alignment: impl Into<alignment::Horizontal>) -> Self {
         self.input = self.input.align_x(alignment);
         self
     }
@@ -379,11 +353,9 @@ where
                 }
             };
 
-            tree.state.downcast_mut::<ContextInputState>().menu =
-                cursor.position().map(|anchor| MenuState {
-                    anchor,
-                    selection,
-                });
+            tree.state.downcast_mut::<ContextInputState>().menu = cursor
+                .position()
+                .map(|anchor| MenuState { anchor, selection });
 
             shell.capture_event();
             shell.request_redraw();
@@ -477,8 +449,7 @@ where
     }
 }
 
-impl<'a, Message, Theme, Renderer>
-    From<ContextInput<'a, Message, Theme, Renderer>>
+impl<'a, Message, Theme, Renderer> From<ContextInput<'a, Message, Theme, Renderer>>
     for Element<'a, Message, Theme, Renderer>
 where
     Message: Clone + 'a,
@@ -516,12 +487,7 @@ enum MenuAction {
 }
 
 impl MenuAction {
-    const ALL: [Self; 4] = [
-        Self::Cut,
-        Self::Copy,
-        Self::Paste,
-        Self::SelectAll,
-    ];
+    const ALL: [Self; 4] = [Self::Cut, Self::Copy, Self::Paste, Self::SelectAll];
 
     fn label(self) -> &'static str {
         match self {
@@ -564,8 +530,7 @@ where
         cursor: mouse::Cursor,
     ) {
         let active_style = input_style(theme, self.style.as_ref(), text_input::Status::Active);
-        let hovered_style =
-            input_style(theme, self.style.as_ref(), text_input::Status::Hovered);
+        let hovered_style = input_style(theme, self.style.as_ref(), text_input::Status::Hovered);
         let bounds = layout.bounds();
         let viewport = Rectangle::INFINITE;
 
@@ -640,9 +605,7 @@ where
     ) {
         match event {
             Event::Keyboard(iced::keyboard::Event::KeyPressed {
-                key: iced::keyboard::Key::Named(
-                    iced::keyboard::key::Named::Escape,
-                ),
+                key: iced::keyboard::Key::Named(iced::keyboard::key::Named::Escape),
                 ..
             }) => {
                 self.close(shell);
@@ -718,11 +681,7 @@ where
         )
     }
 
-    fn hit_action(
-        &self,
-        bounds: Rectangle,
-        position: Point,
-    ) -> Option<MenuAction> {
+    fn hit_action(&self, bounds: Rectangle, position: Point) -> Option<MenuAction> {
         if !bounds.contains(position) {
             return None;
         }
@@ -932,12 +891,48 @@ mod tests {
 
     #[test]
     fn locked_menu_allows_copy_and_select_all_only() {
-        assert!(!menu_action_enabled(MenuAction::Cut, true, true, false, true));
-        assert!(menu_action_enabled(MenuAction::Copy, true, true, false, true));
-        assert!(!menu_action_enabled(MenuAction::Paste, true, true, false, true));
-        assert!(menu_action_enabled(MenuAction::SelectAll, true, true, false, true));
+        assert!(!menu_action_enabled(
+            MenuAction::Cut,
+            true,
+            true,
+            false,
+            true
+        ));
+        assert!(menu_action_enabled(
+            MenuAction::Copy,
+            true,
+            true,
+            false,
+            true
+        ));
+        assert!(!menu_action_enabled(
+            MenuAction::Paste,
+            true,
+            true,
+            false,
+            true
+        ));
+        assert!(menu_action_enabled(
+            MenuAction::SelectAll,
+            true,
+            true,
+            false,
+            true
+        ));
 
-        assert!(!menu_action_enabled(MenuAction::Copy, false, true, false, true));
-        assert!(!menu_action_enabled(MenuAction::SelectAll, false, false, false, true));
+        assert!(!menu_action_enabled(
+            MenuAction::Copy,
+            false,
+            true,
+            false,
+            true
+        ));
+        assert!(!menu_action_enabled(
+            MenuAction::SelectAll,
+            false,
+            false,
+            false,
+            true
+        ));
     }
 }

src/widget/selectable_text.rs

@@ -3,16 +3,15 @@ use iced::advanced::layout;
 use iced::advanced::mouse;
 use iced::advanced::renderer;
 use iced::advanced::text::{self as advanced_text, Paragraph, Span};
-use iced::advanced::widget::tree::{self, Tree};
 use iced::advanced::widget::Widget;
+use iced::advanced::widget::tree::{self, Tree};
 use iced::advanced::{Layout, Shell};
 use iced::widget::text::{
-    self as widget_text, Alignment, Catalog, LineHeight, Shaping, Style, StyleFn,
-    Wrapping,
+    self as widget_text, Alignment, Catalog, LineHeight, Shaping, Style, StyleFn, Wrapping,
 };
 use iced::{
-    alignment, Background, Border, Color, Element, Event, Length, Pixels, Point,
-    Rectangle, Size, Vector, keyboard,
+    Background, Border, Color, Element, Event, Length, Pixels, Point, Rectangle, Size, Vector,
+    alignment, keyboard,
 };
 
 const DRAG_THRESHOLD: f32 = 3.0;
@@ -28,11 +27,7 @@ const HIT_SEARCH_STEPS: usize = 24;
 // widget's per-line offsets would stop being global and selection/copy across
 // lines would break — revisit then.
 
-pub fn selected_substring(
-    text: &str,
-    anchor: usize,
-    cursor: usize,
-) -> Option<String> {
+pub fn selected_substring(text: &str, anchor: usize, cursor: usize) -> Option<String> {
     let (start, end) = normalized_byte_range(text, anchor, cursor);
 
     (start != end).then(|| text[start..end].to_owned())
@@ -42,11 +37,7 @@ pub fn select_all(text: &str) -> (usize, usize) {
     (0, text.len())
 }
 
-fn normalized_byte_range(
-    text: &str,
-    anchor: usize,
-    cursor: usize,
-) -> (usize, usize) {
+fn normalized_byte_range(text: &str, anchor: usize, cursor: usize) -> (usize, usize) {
     let start = clamp_to_char_boundary(text, anchor.min(cursor));
     let end = clamp_to_char_boundary(text, anchor.max(cursor));
 
@@ -75,13 +66,8 @@ where
     SelectableRichText::with_spans(spans)
 }
 
-pub struct SelectableRichText<
-    'a,
-    Link,
-    Message,
-    Theme = iced::Theme,
-    Renderer = iced::Renderer,
-> where
+pub struct SelectableRichText<'a, Link, Message, Theme = iced::Theme, Renderer = iced::Renderer>
+where
     Link: Clone + 'static,
     Theme: Catalog,
     Renderer: advanced_text::Renderer,
@@ -101,8 +87,7 @@ pub struct SelectableRichText<
     selection_color: Color,
 }
 
-impl<'a, Link, Message, Theme, Renderer>
-    SelectableRichText<'a, Link, Message, Theme, Renderer>
+impl<'a, Link, Message, Theme, Renderer> SelectableRichText<'a, Link, Message, Theme, Renderer>
 where
     Link: Clone + 'static,
     Theme: Catalog,
@@ -127,9 +112,7 @@ where
         }
     }
 
-    pub fn with_spans(
-        spans: impl AsRef<[Span<'a, Link, Renderer::Font>]> + 'a,
-    ) -> Self {
+    pub fn with_spans(spans: impl AsRef<[Span<'a, Link, Renderer::Font>]> + 'a) -> Self {
         Self {
             spans: Box::new(spans),
             ..Self::new()
@@ -166,10 +149,7 @@ where
         self
     }
 
-    pub fn align_y(
-        mut self,
-        alignment: impl Into<alignment::Vertical>,
-    ) -> Self {
+    pub fn align_y(mut self, alignment: impl Into<alignment::Vertical>) -> Self {
         self.align_y = alignment.into();
         self
     }
@@ -179,10 +159,7 @@ where
         self
     }
 
-    pub fn on_link_click(
-        mut self,
-        on_link_click: impl Fn(Link) -> Message + 'a,
-    ) -> Self {
+    pub fn on_link_click(mut self, on_link_click: impl Fn(Link) -> Message + 'a) -> Self {
         self.on_link_click = Some(Box::new(on_link_click));
         self
     }
@@ -356,26 +333,16 @@ where
         }
 
         for (index, span) in spans.iter().enumerate() {
-            let is_hovered_link = self.on_link_click.is_some()
-                && Some(index) == self.hovered_link;
+            let is_hovered_link = self.on_link_click.is_some() && Some(index) == self.hovered_link;
 
-            if span.highlight.is_some()
-                || span.underline
-                || span.strikethrough
-                || is_hovered_link
-            {
+            if span.highlight.is_some() || span.underline || span.strikethrough || is_hovered_link {
                 let regions = state.paragraph.span_bounds(index);
 
                 if let Some(highlight) = span.highlight {
                     for bounds in &regions {
                         let bounds = Rectangle::new(
-                            bounds.position()
-                                - Vector::new(
-                                    span.padding.left,
-                                    span.padding.top,
-                                ),
-                            bounds.size()
-                                + Size::new(span.padding.x(), span.padding.y()),
+                            bounds.position() - Vector::new(span.padding.left, span.padding.top),
+                            bounds.size() + Size::new(span.padding.x(), span.padding.y()),
                         );
 
                         renderer.fill_quad(
@@ -390,26 +357,17 @@ where
                 }
 
                 if span.underline || span.strikethrough || is_hovered_link {
-                    let size = span
-                        .size
-                        .or(self.size)
-                        .unwrap_or(renderer.default_size());
+                    let size = span.size.or(self.size).unwrap_or(renderer.default_size());
 
                     let line_height = span
                         .line_height
                         .unwrap_or(self.line_height)
                         .to_absolute(size);
 
-                    let color = span
-                        .color
-                        .or(style.color)
-                        .unwrap_or(defaults.text_color);
+                    let color = span.color.or(style.color).unwrap_or(defaults.text_color);
 
-                    let baseline = translation
-                        + Vector::new(
-                            0.0,
-                            size.0 + (line_height.0 - size.0) / 2.0,
-                        );
+                    let baseline =
+                        translation + Vector::new(0.0, size.0 + (line_height.0 - size.0) / 2.0);
 
                     if span.underline || is_hovered_link {
                         for bounds in &regions {
@@ -497,13 +455,10 @@ where
                     state.dragging = true;
                     state.press_position = Some(position);
                     state.span_pressed = self.hovered_link;
-                    state.selection = state
-                        .paragraph
-                        .hit_test(position)
-                        .map(|hit| {
-                            let offset = hit.cursor().min(flat_text.len());
-                            (offset, offset)
-                        });
+                    state.selection = state.paragraph.hit_test(position).map(|hit| {
+                        let offset = hit.cursor().min(flat_text.len());
+                        (offset, offset)
+                    });
                     shell.capture_event();
                     shell.request_redraw();
                 } else if state.active || state.selection.is_some() {
@@ -521,8 +476,7 @@ where
                     && let Some(hit) = state.paragraph.hit_test(position)
                     && let Some((anchor, _)) = state.selection
                 {
-                    state.selection =
-                        Some((anchor, hit.cursor().min(flat_text.len())));
+                    state.selection = Some((anchor, hit.cursor().min(flat_text.len())));
                     shell.request_redraw();
                 }
             }
@@ -540,16 +494,14 @@ where
                         && let Some(hit) = state.paragraph.hit_test(position)
                         && let Some((anchor, _)) = state.selection
                     {
-                        state.selection =
-                            Some((anchor, hit.cursor().min(flat_text.len())));
+                        state.selection = Some((anchor, hit.cursor().min(flat_text.len())));
                     }
 
                     if !dragged {
                         if let (Some(on_link_clicked), Some(span)) =
                             (&self.on_link_click, state.span_pressed)
                             && Some(span) == self.hovered_link
-                            && let Some(link) =
-                                spans.get(span).and_then(|span| span.link.clone())
+                            && let Some(link) = spans.get(span).and_then(|span| span.link.clone())
                         {
                             shell.publish(on_link_clicked(link));
                         }
@@ -570,25 +522,22 @@ where
                 physical_key,
                 modifiers,
                 ..
-            }) if state.active && modifiers.command() => {
-                match key.to_latin(*physical_key) {
-                    Some('c') | Some('C') => {
-                        if let Some((anchor, cursor)) = state.selection
-                            && let Some(selected) =
-                                selected_substring(&flat_text, anchor, cursor)
-                        {
-                            clipboard.write(clipboard::Kind::Standard, selected);
-                            shell.capture_event();
-                        }
-                    }
-                    Some('a') | Some('A') => {
-                        state.selection = Some(select_all(&flat_text));
+            }) if state.active && modifiers.command() => match key.to_latin(*physical_key) {
+                Some('c') | Some('C') => {
+                    if let Some((anchor, cursor)) = state.selection
+                        && let Some(selected) = selected_substring(&flat_text, anchor, cursor)
+                    {
+                        clipboard.write(clipboard::Kind::Standard, selected);
                         shell.capture_event();
-                        shell.request_redraw();
                     }
-                    _ => {}
                 }
-            }
+                Some('a') | Some('A') => {
+                    state.selection = Some(select_all(&flat_text));
+                    shell.capture_event();
+                    shell.request_redraw();
+                }
+                _ => {}
+            },
             _ => {}
         }
     }
@@ -657,14 +606,8 @@ where
         };
 
         if state.spans != config.spans {
-            state.paragraph =
-                Renderer::Paragraph::with_spans(text_with_spans());
-            state.spans = config
-                .spans
-                .iter()
-                .cloned()
-                .map(Span::to_static)
-                .collect();
+            state.paragraph = Renderer::Paragraph::with_spans(text_with_spans());
+            state.spans = config.spans.iter().cloned().map(Span::to_static).collect();
         } else {
             match state.paragraph.compare(advanced_text::Text {
                 content: (),
@@ -682,8 +625,7 @@ where
                     state.paragraph.resize(bounds);
                 }
                 advanced_text::Difference::Shape => {
-                    state.paragraph =
-                        Renderer::Paragraph::with_spans(text_with_spans());
+                    state.paragraph = Renderer::Paragraph::with_spans(text_with_spans());
                 }
             }
         }
@@ -761,13 +703,7 @@ fn selection_rect_for_line<P: Paragraph>(
     })
 }
 
-fn x_for_offset<P: Paragraph>(
-    paragraph: &P,
-    y: f32,
-    offset: usize,
-    left: f32,
-    right: f32,
-) -> f32 {
+fn x_for_offset<P: Paragraph>(paragraph: &P, y: f32, offset: usize, left: f32, right: f32) -> f32 {
     let mut low = left;
     let mut high = right.max(left);
 
@@ -787,10 +723,7 @@ fn x_for_offset<P: Paragraph>(
     high
 }
 
-fn visual_lines<P: Paragraph>(
-    paragraph: &P,
-    span_count: usize,
-) -> Vec<Rectangle> {
+fn visual_lines<P: Paragraph>(paragraph: &P, span_count: usize) -> Vec<Rectangle> {
     let mut lines: Vec<Rectangle> = Vec::new();
 
     for span in 0..span_count {
@@ -820,10 +753,7 @@ fn union(a: Rectangle, b: Rectangle) -> Rectangle {
     let right = (a.x + a.width).max(b.x + b.width);
     let bottom = (a.y + a.height).max(b.y + b.height);
 
-    Rectangle::new(
-        Point::new(left, top),
-        Size::new(right - left, bottom - top),
-    )
+    Rectangle::new(Point::new(left, top), Size::new(right - left, bottom - top))
 }
 
 fn clamped_position(cursor: mouse::Cursor, bounds: Rectangle) -> Option<Point> {

tests/file_transfer_loopback.rs

@@ -21,7 +21,7 @@ use iroh::endpoint::presets;
 use iroh::protocol::Router;
 use iroh::{Endpoint, RelayMode};
 
-use peerspeak::files::{ChatAttachment, AttachmentKind};
+use peerspeak::files::{AttachmentKind, ChatAttachment};
 use peerspeak::network::NetworkTransport;
 use peerspeak::network::iroh_impl::{FileRouter, IrohTransport};
 use peerspeak::protocol::FILES_ALPN;
@@ -52,7 +52,12 @@ async fn spawn_node() -> Node {
         .accept(FILES_ALPN, file_router)
         .spawn();
 
-    Node { endpoint, transport, _router: router, lookup }
+    Node {
+        endpoint,
+        transport,
+        _router: router,
+        lookup,
+    }
 }
 
 /// A pseudo-random-ish multi-megabyte payload spanning many QUIC packets, so a
@@ -86,7 +91,9 @@ async fn loopback_attachment_round_trips_intact() {
 
     let blob = big_blob();
     let id = [42u8; 32];
-    server.transport.serve_attachment(id, Arc::new(blob.clone()));
+    server
+        .transport
+        .serve_attachment(id, Arc::new(blob.clone()));
 
     let att = ChatAttachment {
         name: "exterior-landscape.jpg".to_string(),

tests/reconnect_eviction.rs

@@ -62,7 +62,7 @@ async fn evicted_within(
             Ok(Some(UiEvent::PeerConnectionFailed { id })) if id == peer => return true,
             Ok(Some(_)) => continue, // ignore PeerConnecting / PeerConnected / PeerLeft
             Ok(None) => return false, // channel closed
-            Err(_) => return false,   // timed out — no eviction
+            Err(_) => return false,  // timed out — no eviction
         }
     }
 }
@@ -80,7 +80,7 @@ async fn left_within(
             Ok(Some(UiEvent::PeerLeft { id })) if id == peer => return true,
             Ok(Some(_)) => continue, // ignore PeerConnecting / PeerConnected
             Ok(None) => return false, // channel closed
-            Err(_) => return false,   // timed out — no leave
+            Err(_) => return false,  // timed out — no leave
         }
     }
 }

tests/transport_loopback.rs

@@ -23,8 +23,8 @@ use iroh::protocol::{AcceptError, ProtocolHandler};
 use peerspeak::codec::AudioEncoder;
 use peerspeak::codec::opus_impl::OpusEncoder;
 use peerspeak::core::jitter::{FRAME_SAMPLES, JitterBuffer};
-use peerspeak::network::{ConnEvent, NetworkTransport};
 use peerspeak::network::iroh_impl::{AudioRouter, IrohTransport};
+use peerspeak::network::{ConnEvent, NetworkTransport};
 use peerspeak::protocol::AUDIO_ALPN;
 
 struct Node {
@@ -91,7 +91,12 @@ async fn spawn_capture_peer(secret: iroh::SecretKey) -> CapturePeer {
         .accept(AUDIO_ALPN, CaptureProtocol { conns_tx })
         .spawn();
 
-    CapturePeer { endpoint, _router: router, lookup, conns_rx }
+    CapturePeer {
+        endpoint,
+        _router: router,
+        lookup,
+        conns_rx,
+    }
 }
 
 /// Spawn a node with a specific secret key. Reusing a key gives the respawned
@@ -208,7 +213,11 @@ async fn loopback_sequenced_audio_reaches_peer_and_decodes() {
         received += 1;
 
         if let Some(frame) = jitter.pop_frame() {
-            assert_eq!(frame.len(), FRAME_SAMPLES, "decoded frame is one 20ms frame");
+            assert_eq!(
+                frame.len(),
+                FRAME_SAMPLES,
+                "decoded frame is one 20ms frame"
+            );
             decoded_frames += 1;
         }
         if received >= N {
@@ -290,7 +299,11 @@ async fn dialer_reconnects_after_link_drops() {
         .expect("timed out awaiting initial connection")
         .expect("connection channel closed");
     assert!(
-        await_reconnect(&mut conn_events, tokio::time::Instant::now() + Duration::from_secs(10)).await,
+        await_reconnect(
+            &mut conn_events,
+            tokio::time::Instant::now() + Duration::from_secs(10)
+        )
+        .await,
         "initial link should report Connecting then Connected"
     );
 
@@ -306,7 +319,11 @@ async fn dialer_reconnects_after_link_drops() {
         .expect("timed out awaiting reconnect")
         .expect("connection channel closed");
     assert!(
-        await_reconnect(&mut conn_events, tokio::time::Instant::now() + Duration::from_secs(15)).await,
+        await_reconnect(
+            &mut conn_events,
+            tokio::time::Instant::now() + Duration::from_secs(15)
+        )
+        .await,
         "dropped link should report Connecting (down) then Connected (recovered)"
     );
 
@@ -319,7 +336,12 @@ async fn dialer_reconnects_after_link_drops() {
         tokio::time::sleep(Duration::from_millis(5)).await;
     }
 
-    let received = count_audio(&conn2, 25, tokio::time::Instant::now() + Duration::from_secs(3)).await;
+    let received = count_audio(
+        &conn2,
+        25,
+        tokio::time::Instant::now() + Duration::from_secs(3),
+    )
+    .await;
     assert!(
         received >= 20,
         "audio should resume after reconnect; got {received} frames"
@@ -359,7 +381,11 @@ async fn dialer_reports_left_on_graceful_close() {
         .expect("timed out awaiting initial connection")
         .expect("connection channel closed");
     assert!(
-        await_reconnect(&mut conn_events, tokio::time::Instant::now() + Duration::from_secs(10)).await,
+        await_reconnect(
+            &mut conn_events,
+            tokio::time::Instant::now() + Duration::from_secs(10)
+        )
+        .await,
         "initial link should report Connecting then Connected"
     );
 
@@ -384,7 +410,10 @@ async fn dialer_reports_left_on_graceful_close() {
 
     // And no re-dial reaches the peer within a short window.
     let redial = tokio::time::timeout(Duration::from_secs(2), peer.conns_rx.recv()).await;
-    assert!(redial.is_err(), "supervisor must not re-dial after a graceful leave");
+    assert!(
+        redial.is_err(),
+        "supervisor must not re-dial after a graceful leave"
+    );
 }
 
 #[tokio::test]
@@ -429,7 +458,11 @@ async fn dialer_connects_and_reconnects_without_an_address_lookup() {
         .expect("timed out awaiting initial connection (retained address path)")
         .expect("connection channel closed");
     assert!(
-        await_reconnect(&mut conn_events, tokio::time::Instant::now() + Duration::from_secs(10)).await,
+        await_reconnect(
+            &mut conn_events,
+            tokio::time::Instant::now() + Duration::from_secs(10)
+        )
+        .await,
         "initial link should report Connecting then Connected"
     );
 
@@ -443,7 +476,11 @@ async fn dialer_connects_and_reconnects_without_an_address_lookup() {
         .expect("timed out awaiting reconnect (retained address path)")
         .expect("connection channel closed");
     assert!(
-        await_reconnect(&mut conn_events, tokio::time::Instant::now() + Duration::from_secs(15)).await,
+        await_reconnect(
+            &mut conn_events,
+            tokio::time::Instant::now() + Duration::from_secs(15)
+        )
+        .await,
         "reconnect should report Connecting then Connected with no lookup at all"
     );
 
@@ -455,7 +492,12 @@ async fn dialer_connects_and_reconnects_without_an_address_lookup() {
         tokio::time::sleep(Duration::from_millis(5)).await;
     }
 
-    let received = count_audio(&conn2, 25, tokio::time::Instant::now() + Duration::from_secs(3)).await;
+    let received = count_audio(
+        &conn2,
+        25,
+        tokio::time::Instant::now() + Duration::from_secs(3),
+    )
+    .await;
     assert!(
         received >= 20,
         "audio should resume after reconnecting via the retained address; got {received} frames"