Refactor error handling to use platform-specific worker restart instructions

- Updated multiple hooks (context-hook, new-hook, save-hook, summary-hook, user-message-hook) to throw errors using `getWorkerRestartInstructions` for improved user guidance on worker connection issues.
- Enhanced `handleWorkerError` function to utilize the new error message generator for consistent error reporting.
- Modified `ensureWorkerRunning` function to provide detailed instructions based on the worker's state, including port information.
- Introduced `getWorkerRestartInstructions` utility in `error-messages.ts` to generate platform-aware error messages for worker failures.

src/shared/worker-utils.ts

@@ -6,6 +6,7 @@ import { logger } from "../utils/logger.js";
 import { HOOK_TIMEOUTS, getTimeout } from "./hook-constants.js";
 import { ProcessManager } from "../services/process/ProcessManager.js";
 import { SettingsDefaultsManager } from "./SettingsDefaultsManager.js";
+import { getWorkerRestartInstructions } from "../utils/error-messages.js";
 
 const MARKETPLACE_ROOT = path.join(homedir(), '.claude', 'plugins', 'marketplaces', 'thedotmack');
 
@@ -197,9 +198,10 @@ export async function ensureWorkerRunning(): Promise<void> {
   if (!started) {
     const port = getWorkerPort();
     throw new Error(
-      `Worker service failed to start on port ${port}.\n\n` +
-      `To start manually, run: npm run worker:start\n` +
-      `If already running, try: npm run worker:restart`
+      getWorkerRestartInstructions({
+        port,
+        customPrefix: `Worker service failed to start on port ${port}.`
+      })
     );
   }
 
@@ -217,7 +219,9 @@ export async function ensureWorkerRunning(): Promise<void> {
   const port = getWorkerPort();
   logger.error('SYSTEM', 'Worker started but not responding to health checks');
   throw new Error(
-    `Worker service started but is not responding on port ${port}.\n\n` +
-    `Try: npm run worker:restart`
+    getWorkerRestartInstructions({
+      port,
+      customPrefix: `Worker service started but is not responding on port ${port}.`
+    })
   );
 }