fix(windows): restore screen-share cross-build

src/audio/clip_player.rs

@@ -348,6 +348,7 @@ mod tests {
     /// `cargo test --lib -- --ignored --test-threads=1 clip_player_node`
     #[test]
     #[ignore = "live: requires a running PipeWire daemon and pw-dump; run with --test-threads=1"]
+    #[cfg(not(windows))]
     fn clip_player_node_carries_both_ownership_carriers() {
         use crate::audio::ownership::{self, live_test};
 

src/core/mod.rs

@@ -3576,6 +3576,7 @@ async fn run_core_loop(
                 let session = active_session
                     .as_mut()
                     .expect("session presence checked before PixelPass probe");
+                #[cfg(target_os = "linux")]
                 let aec_module_index = matches!(
                     audio,
                     crate::screenshare::ShareAudioSelection::DesktopExcluding
@@ -3587,6 +3588,15 @@ async fn run_core_loop(
                         .map(crate::audio::echo_cancel::EchoCancelGuard::module_index)
                 })
                 .flatten();
+                // Windows has no PipeWire echo-cancel module, so there is no
+                // module identity to hand to PixelPass. Keep the shared host
+                // spawn path platform-neutral without importing the Linux-only
+                // `audio::echo_cancel` module into a Windows build.
+                #[cfg(not(target_os = "linux"))]
+                let aec_module_index = {
+                    debug_assert!(session.teardown.echo_cancel().is_none());
+                    None
+                };
                 // Every share gets a notice forwarder — not just app-audio ones.
                 // App-audio and desktop-exclusion events become UI state, and
                 // the drain's terminal `Eof` becomes a generation-scoped fault.

src/screenshare/mod.rs

@@ -1016,6 +1016,7 @@ mod tests {
     /// `cargo test --lib -- --ignored spawned_player`
     #[tokio::test]
     #[ignore = "live: requires a running PipeWire daemon, mpv and pw-dump"]
+    #[cfg(not(windows))]
     async fn spawned_player_node_carries_both_ownership_carriers() {
         use crate::audio::ownership::live_test;