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/context-hook.ts

@@ -6,6 +6,7 @@
 import path from 'path';
 import { stdin } from 'process';
 import { SessionStore } from '../services/sqlite/SessionStore.js';
+import { ensureWorkerRunning } from '../shared/worker-utils.js';
 
 // Configuration: Read from environment or use defaults
 const DISPLAY_OBSERVATION_COUNT = parseInt(process.env.CLAUDE_MEM_CONTEXT_OBSERVATIONS || '50', 10);
@@ -126,6 +127,9 @@ function getObservations(db: SessionStore, sessionIds: string[]): Observation[]
  * Context Hook Main Logic
  */
 function contextHook(input?: SessionStartInput, useColors: boolean = false, useIndexView: boolean = false): string {
+  // Ensure worker is running
+  ensureWorkerRunning();
+
   const cwd = input?.cwd ?? process.cwd();
   const project = cwd ? path.basename(cwd) : 'unknown-project';