feat(core): improve platform compatibility and startup robustness

This update enhances cross-platform reliability by addressing potential hangs during application startup on Linux environments using WebKitGTK. Additionally, native taskbar badge functionality is improved for macOS and Linux, ensuring accurate display of sync status. Configuration settings are also updated to include more specific internal crate reads and web search capabilities.

- Added timeout fallback to waitForAnimationFrame in Svelte
- Improved set_sync_badge logic for macOS/Linux platforms
- Updated local configuration with detailed dependency reads

.claude/settings.local.json

@@ -100,7 +100,11 @@
       "Bash(pkg-config --exists openssl)",
       "Bash(sudo apt-get install -y libssl-dev pkg-config)",
       "Bash(dpkg -L libssl3t64)",
-      "Bash(grep *)"
+      "Bash(grep *)",
+      "Read(//home/christoph/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tauri-2.11.5/src/**)",
+      "Read(//home/christoph/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tauri-runtime-wry-2.11.4/src/**)",
+      "Read(//home/christoph/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tauri-2.11.5/src/window/**)",
+      "WebSearch"
     ]
   }
 }

src-tauri/src/badge.rs

@@ -177,7 +177,21 @@ pub fn set_sync_badge(
             .map_err(|err| format!("Could not set taskbar badge: {err}"))?;
     }
 
-    #[cfg(not(target_os = "windows"))]
+    // Native badge count: works on Linux (via the desktop's launcher API, e.g. Unity's
+    // LauncherEntry, also honored by GNOME/KDE) and macOS (dock badge). Matched against the
+    // app's `<product-name>.desktop` file on Linux, so it's a silent no-op on launchers that
+    // don't implement the protocol.
+    #[cfg(any(target_os = "linux", target_os = "macos"))]
+    {
+        let Some(window) = app.get_webview_window("main") else {
+            return Ok(());
+        };
+        window
+            .set_badge_count(if count > 0 { Some(count as i64) } else { None })
+            .map_err(|err| format!("Could not set taskbar badge: {err}"))?;
+    }
+
+    #[cfg(not(any(target_os = "windows", target_os = "linux", target_os = "macos")))]
     {
         let _ = (app, count);
     }

src/App.svelte

@@ -421,7 +421,21 @@
   }
 
   function waitForAnimationFrame(): Promise<void> {
-    return new Promise((resolve) => requestAnimationFrame(() => resolve()));
+    // requestAnimationFrame never fires for an unmapped/invisible window on
+    // WebKitGTK (Linux) — the compositor frame clock only runs for realized
+    // windows. The main window starts hidden until the splashscreen closes,
+    // so without a timeout fallback this promise (and the whole startup
+    // sequence, including closing the splashscreen) would hang forever on Linux.
+    return new Promise((resolve) => {
+      let settled = false;
+      const settle = () => {
+        if (settled) return;
+        settled = true;
+        resolve();
+      };
+      requestAnimationFrame(() => settle());
+      window.setTimeout(settle, 50);
+    });
   }
 
   async function waitForStartupPaint() {