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,

src/services/worker/SessionManager.ts

@@ -47,7 +47,7 @@ export class SessionManager {
    * Initialize a new session or return existing one
    */
   initializeSession(sessionDbId: number, currentUserPrompt?: string, promptNumber?: number): ActiveSession {
-    console.log('[SESSION-MANAGER] initializeSession called:', {
+    logger.info('SESSION', 'initializeSession called', {
       sessionDbId,
       promptNumber,
       has_currentUserPrompt: !!currentUserPrompt
@@ -56,7 +56,7 @@ export class SessionManager {
     // Check if already active
     let session = this.sessions.get(sessionDbId);
     if (session) {
-      console.log('[SESSION-MANAGER] Returning cached session:', {
+      logger.info('SESSION', 'Returning cached session', {
         sessionDbId,
         claudeSessionId: session.claudeSessionId,
         lastPromptNumber: session.lastPromptNumber
@@ -98,7 +98,7 @@ export class SessionManager {
     // Fetch from database
     const dbSession = this.dbManager.getSessionById(sessionDbId);
 
-    console.log('[SESSION-MANAGER] Fetched session from database:', {
+    logger.info('SESSION', 'Fetched session from database', {
       sessionDbId,
       claude_session_id: dbSession.claude_session_id,
       sdk_session_id: dbSession.sdk_session_id
@@ -141,7 +141,7 @@ export class SessionManager {
       currentProvider: null  // Will be set when generator starts
     };
 
-    console.log('[SESSION-MANAGER] Creating new session object:', {
+    logger.info('SESSION', 'Creating new session object', {
       sessionDbId,
       claudeSessionId: dbSession.claude_session_id,
       lastPromptNumber: promptNumber || this.dbManager.getSessionStore().getPromptNumberFromUserPrompts(dbSession.claude_session_id)

src/services/worker/http/routes/SessionRoutes.ts

@@ -173,7 +173,7 @@ export class SessionRoutes extends BaseRouteHandler {
     if (sessionDbId === null) return;
 
     const { userPrompt, promptNumber } = req.body;
-    console.log('[SESSION-ROUTES] handleSessionInit called:', {
+    logger.info('HTTP', 'SessionRoutes: handleSessionInit called', {
       sessionDbId,
       promptNumber,
       has_userPrompt: !!userPrompt
@@ -488,7 +488,7 @@ export class SessionRoutes extends BaseRouteHandler {
   private handleSessionInitByClaudeId = this.wrapHandler((req: Request, res: Response): void => {
     const { claudeSessionId, project, prompt } = req.body;
 
-    console.log('[SESSION-ROUTES] handleSessionInitByClaudeId called:', {
+    logger.info('HTTP', 'SessionRoutes: handleSessionInitByClaudeId called', {
       claudeSessionId,
       project,
       prompt_length: prompt?.length
@@ -504,7 +504,7 @@ export class SessionRoutes extends BaseRouteHandler {
     // Step 1: Create/get SDK session (idempotent INSERT OR IGNORE)
     const sessionDbId = store.createSDKSession(claudeSessionId, project, prompt);
 
-    console.log('[SESSION-ROUTES] createSDKSession returned:', {
+    logger.info('HTTP', 'SessionRoutes: createSDKSession returned', {
       sessionDbId,
       claudeSessionId
     });
@@ -513,7 +513,7 @@ export class SessionRoutes extends BaseRouteHandler {
     const currentCount = store.getPromptNumberFromUserPrompts(claudeSessionId);
     const promptNumber = currentCount + 1;
 
-    console.log('[SESSION-ROUTES] Calculated promptNumber:', {
+    logger.info('HTTP', 'SessionRoutes: Calculated promptNumber', {
       sessionDbId,
       promptNumber,
       currentCount