qol-plugin-gpui-surfaceslisted

# qol-plugin-gpui-surfaces qol plugins feel "installed" when their UI is native: summoned from the launcher, centered on the active monitor, keyboard-first, gone on ESC. The shared kit in `libs/qol-gpui` makes that a wiring job, not a windowing project. **Never hand-roll plugin windows; extend the kit.** Contract-driven settings are hosted by qol-tray; custom pickers, overlays, and toasts remain plugin-owned. ## The shared kit (libs/qol-gpui) | Piece | File | What it owns | | --- | --- | --- | | `Surface` builder | `surface.rs` | Window creation for `SurfaceKind::Toast` (PopUp, unfocused, corner-anchored, optional timeout) and `SurfaceKind::Panel` (Normal, focused, monitor-centered, designed-size locked) | | `SurfaceDismisser` | `surface.rs` | Close from anywhere (key handler, click, timer). Deferred out of event dispatch - see invariants | | `Toast` + `ToastHost` | `toast.rs` | Theme-backed passive messages with semantic tones, timed or persistent lifetime, optional activation, replacement, and dismissal | | `SettingsWindowHost` | `settings_panel/` | Retains exactly one settings window and implements open, focus-same-plugin, replace-with-another-plugin, and park/reveal across Escape | | `SettingsRuntime::tray` | `settings_panel/` | Routes hosted runtime queries and actions through qol-tray's existing HTTP API | | `settings_panel::open` / `run_standalone` | `settings_panel/` | Plugin-owned fallback entrypoints for code already running GPUI or starting a standalone GPUI app