feat(app): Event Center, native notifications, auto-unread, state wiring in App

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/src-tauri/Cargo.toml

@@ -14,6 +14,7 @@ tauri-build = { version = "2", features = [] }
 
 [dependencies]
 tauri = { version = "2", features = [] }
+tauri-plugin-notification = "2"
 spacesh-proto = { path = "../../crates/spacesh-proto" }
 tokio = { version = "1", features = ["full"] }
 serde = { version = "1", features = ["derive"] }

app/src-tauri/capabilities/default.json

@@ -10,6 +10,7 @@
     "core:app:default",
     "core:resources:default",
     "core:menu:default",
-    "core:tray:default"
+    "core:tray:default",
+    "notification:default"
   ]
 }

app/src-tauri/src/lib.rs

@@ -5,6 +5,7 @@ use tauri::Manager;
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
     tauri::Builder::default()
+        .plugin(tauri_plugin_notification::init())
         .setup(|app| {
             let handle = app.handle().clone();
             // Connect the bridge on a tokio runtime, then manage it.