cli: implement local→CouchDB file watching via chokidar

- Add chokidar ^4.0.0 as dependency (root package.json, runtime-package.json)
- Mark chokidar as external in vite.config.ts (not bundled, loaded at runtime)
- Implement CLIWatchAdapter.beginWatch() with chokidar:
  - ignoreInitial: true (startup files handled by mirror scan)
  - awaitWriteFinish to prevent partial-write events
  - Excludes dotfiles and .livesync/ directory at watcher level
  - Maps add/change/unlink/addDir/unlinkDir to IStorageEventWatchHandlers
  - Fatal error handler: logs clearly and releases watcher resources
- Add close() to CLIWatchAdapter, StorageEventManagerCLI for clean shutdown
- Register onUnload hook in CLIServiceModules to close watcher on shutdown

src/apps/cli/serviceModules/CLIServiceModules.ts

@@ -22,7 +22,8 @@ import type { ServiceModules } from "@lib/interfaces/ServiceModule";
 export function initialiseServiceModulesCLI(
     basePath: string,
     core: LiveSyncBaseCore<ServiceContext, any>,
-    services: InjectableServiceHub<ServiceContext>
+    services: InjectableServiceHub<ServiceContext>,
+    watchEnabled: boolean = false,
 ): ServiceModules {
     const storageAccessManager = new StorageAccessManager();
 
@@ -42,6 +43,12 @@ export function initialiseServiceModulesCLI(
         vaultService: services.vault,
         storageAccessManager: storageAccessManager,
         APIService: services.API,
+    }, false);
+
+    // Close the file watcher during graceful shutdown so the process can exit cleanly.
+    services.appLifecycle.onUnload.addHandler(async () => {
+        await storageEventManager.close();
+        return true;
     });
 
     // Storage access using CLI file system adapter