Refactor logging in hooks, services, and routes to use centralized logger

- Replaced console.log and console.error statements with logger.info and logger.error in new-hook.ts, SDKAgent.ts, SessionManager.ts, and SessionRoutes.ts for consistent logging.
- Introduced log file creation and management in logger.ts, ensuring logs are saved to a file with a date-based naming convention.
- Enhanced error handling in logger to prevent crashes if log file operations fail.

src/services/worker/SDKAgent.ts

@@ -64,7 +64,7 @@ export class SDKAgent {
       // Create message generator (event-driven)
       const messageGenerator = this.createMessageGenerator(session);
 
-      console.log('[SDK-AGENT] Starting SDK query with:', {
+      logger.info('SDK', 'Starting SDK query', {
         sessionDbId: session.sessionDbId,
         claudeSessionId: session.claudeSessionId,
         resume_parameter: session.claudeSessionId,
@@ -205,7 +205,7 @@ export class SDKAgent {
 
     // Build initial prompt
     const isInitPrompt = session.lastPromptNumber === 1;
-    console.log('[SDK-AGENT] Creating message generator:', {
+    logger.info('SDK', 'Creating message generator', {
       sessionDbId: session.sessionDbId,
       claudeSessionId: session.claudeSessionId,
       lastPromptNumber: session.lastPromptNumber,