X11 sessions now persist and restore the window position (window_x/y) in
addition to size. Gated to X11: Wayland's xdg-shell gives clients no way
to self-position, so we center there (and iced never emits Moved on
Wayland, so window_x/y stay None). No drift across save/restore — iced's
Moved event and Position::Specific both use the window's outer position.
Also confirmed peerspeak already runs on X11 out of the box (winit
compiles both backends and auto-selects via WAYLAND_DISPLAY/DISPLAY) and
documented X11/Wayland support in FEATURES.md.
- config: window_x/window_y: Option<i32> (serde-default None).
- app: is_wayland() + pure initial_window_position() helper; a Moved
handler records position; the close path persists it.
- tests: +3 initial_window_position (X11 restore / Wayland centers /
partial-or-missing centers), +2 config (round-trip incl. negative
coords; backward-compat load without the new fields). 130 -> 135 lib.
Verified live on X11/XWayland: saved an off-center position, the window
reopened there (not centered). clippy clean incl. --all-targets.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
molluskandClaude Opus 4.8
c888c30c08