Refactor worker commands from npm scripts to claude-mem CLI

- Updated all instances of `npm run worker:restart` to `claude-mem restart` in documentation and code comments for consistency.
- Modified error messages and logging to reflect the new command structure.
- Adjusted worker management commands in various troubleshooting documents.
- Changed the worker status check message to guide users towards the new command.

docs/public/development.mdx

@@ -165,7 +165,7 @@ npm run build
 1. Make changes to React components in `src/ui/viewer/`
 2. Build: `npm run build`
 3. Sync to installed plugin: `npm run sync-marketplace`
-4. Restart worker: `npm run worker:restart`
+4. Restart worker: `claude-mem restart`
 5. Refresh browser at http://localhost:37777
 
 **Hot Reload**: Not currently supported. Full rebuild + restart required for changes.
@@ -456,7 +456,7 @@ export async function createObservation(
 
 ```bash
 export DEBUG=claude-mem:*
-npm run worker:restart
+claude-mem restart
 npm run worker:logs
 ```