feat: Agent Orchestrator — multi-project agent dashboard

Tauri + Svelte 5 + Rust application for orchestrating multiple AI coding agents.
Includes Claude, Aider, Codex, and Ollama provider support, multi-agent
communication (btmsg/bttask), session anchors, plugin sandbox, FTS5 search,
Landlock sandboxing, and 507 vitest + 110 cargo tests.

src/lib/adapters/notifications-bridge.ts

@@ -0,0 +1,19 @@
+// Notifications bridge — wraps Tauri desktop notification command
+
+import { invoke } from '@tauri-apps/api/core';
+
+export type NotificationUrgency = 'low' | 'normal' | 'critical';
+
+/**
+ * Send an OS desktop notification via notify-rust.
+ * Fire-and-forget: errors are swallowed (notification daemon may not be running).
+ */
+export function sendDesktopNotification(
+  title: string,
+  body: string,
+  urgency: NotificationUrgency = 'normal',
+): void {
+  invoke('notify_desktop', { title, body, urgency }).catch(() => {
+    // Swallow IPC errors — notifications must never break the app
+  });
+}