Refactor hooks to ensure worker is running before processing

- Updated `save-hook.js`, `summary-hook.js`, `context-hook.ts`, `new-hook.ts`, and `save-hook.ts` to include a call to `ensureWorkerRunning()` at the beginning of their main functions. This ensures that the worker is active before any operations are performed.
- Cleaned up import statements in the affected files to include the new utility function from `worker-utils.js`.
- Minor adjustments to logging and error handling to improve robustness and clarity.

src/hooks/save-hook.ts

@@ -7,6 +7,7 @@ import { stdin } from 'process';
 import { SessionStore } from '../services/sqlite/SessionStore.js';
 import { createHookResponse } from './hook-response.js';
 import { logger } from '../utils/logger.js';
+import { ensureWorkerRunning } from '../shared/worker-utils.js';
 
 export interface PostToolUseInput {
   session_id: string;
@@ -37,6 +38,9 @@ async function saveHook(input?: PostToolUseInput): Promise<void> {
     return;
   }
 
+  // Ensure worker is running
+  ensureWorkerRunning();
+
   const db = new SessionStore();
 
   // Get or create session