macos: fold relaunch prompt into the warning row instead of a toast

The cut-off toast UX ("Accessibility granted. Relaunch Lan Mouse so
capture and emulat…") was unreadable in a compact window and split
the "grant" and "relaunch" flows into two disconnected surfaces. Fold
everything into the existing warning row with state-dependent content:

- AX missing:
    title    = "input capture is disabled"
    subtitle = "grant Accessibility permission to enable"
    button   = "Grant"   → opens System Settings → Accessibility

- AX granted, daemon still bailed:
    title    = "relaunch required"
    subtitle = "Accessibility granted — restart to activate capture
                and emulation"
    button   = "Relaunch" → spawns a fresh bundle via `open` after
                            a 1s delay, then quits.

- Both active: row hidden.

The emulation_status_row is kept hidden on macOS because capture and
emulation share the same TCC gate — a single row is sufficient and
two identical-looking warnings were noisy. `handle_emulation` still
exists for the non-macOS platforms where the rows are distinct.

Side effects:
- `relaunch_bundle` moved from lib.rs to macos_privacy so imp.rs can
  call it from the row button handler.
- AX watcher callback shrinks to `window.present()` +
  `refresh_capture_emulation_status()`; the toast-based dialog is
  gone along with its helper.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

lan-mouse-gtk/src/window/imp.rs

@@ -10,16 +10,6 @@ use lan_mouse_ipc::{DEFAULT_PORT, FrontendRequestWriter};
 
 use crate::authorization_window::AuthorizationWindow;
 
-#[cfg(target_os = "macos")]
-fn open_accessibility_if_missing(ctx: &str) {
-    if crate::macos_privacy::accessibility_granted() {
-        log::info!("{ctx}: Accessibility already granted, retry only");
-    } else {
-        log::info!("{ctx}: opening Accessibility pane");
-        crate::macos_privacy::open_accessibility_settings();
-    }
-}
-
 #[derive(CompositeTemplate, Default)]
 #[template(resource = "/de/feschber/LanMouse/window.ui")]
 pub struct Window {
@@ -152,15 +142,32 @@ impl Window {
 
     #[template_callback]
     fn handle_emulation(&self) {
-        #[cfg(target_os = "macos")]
-        open_accessibility_if_missing("Reenable emulation");
+        // On macOS the emulation_status_row is hidden — capture_status_row
+        // acts as the shared warning (see update_capture_emulation_status).
+        // This handler still fires for the non-macOS platforms where the
+        // emulation row is distinct.
         self.obj().request_emulation();
     }
 
     #[template_callback]
     fn handle_capture(&self) {
         #[cfg(target_os = "macos")]
-        open_accessibility_if_missing("Reenable capture");
+        {
+            use crate::macos_privacy;
+            if macos_privacy::accessibility_granted() {
+                // AX granted but the row is still visible => the daemon
+                // subprocess bailed before AX was in place and needs a
+                // fresh process. Quit + relaunch via Launch Services.
+                log::info!("capture row clicked in relaunch-required state");
+                macos_privacy::relaunch_bundle();
+                if let Some(app) = self.obj().application() {
+                    app.quit();
+                }
+                return;
+            }
+            log::info!("capture row clicked in AX-missing state, opening pane");
+            macos_privacy::open_accessibility_settings();
+        }
         self.obj().request_capture();
     }