Enhance HooksDatabase and WorkerService functionality

- Updated save-hook.js and summary-hook.js to include new database columns for tracking worker ports and prompt numbers.
- Implemented migration logic to remove UNIQUE constraints from session_summaries table and added necessary indices.
- Modified HooksDatabase methods to return boolean values indicating success or failure of updates.
- Changed logging from error to info level in WorkerService for better clarity on session management and initialization.

src/services/sqlite/HooksDatabase.ts

@@ -305,8 +305,9 @@ export class HooksDatabase {
   /**
    * Update SDK session ID (captured from init message)
    * Only updates if current sdk_session_id is NULL to avoid breaking foreign keys
+   * Returns true if update succeeded, false if skipped
    */
-  updateSDKSessionId(id: number, sdkSessionId: string): void {
+  updateSDKSessionId(id: number, sdkSessionId: string): boolean {
     const stmt = this.db.prepare(`
       UPDATE sdk_sessions
       SET sdk_session_id = ?
@@ -317,7 +318,10 @@ export class HooksDatabase {
 
     if (result.changes === 0) {
       console.error(`[HooksDatabase] Skipped updating sdk_session_id for session ${id} - already set (prevents FOREIGN KEY constraint violation)`);
+      return false;
     }
+
+    return true;
   }
 
   /**