feat: Enhance session management with prompt tracking

- Added prompt_number to observations and session summaries for better tracking.
- Implemented prompt counter in SDK sessions to manage user prompts effectively.
- Updated database schema to include prompt tracking columns and removed unique constraints on session summaries.
- Modified hooks to utilize prompt_number in observations and summaries.
- Changed worker service to handle summarize requests instead of finalize, keeping the SDK agent active.
- Improved logging for better debugging and tracking of prompt numbers across sessions.

src/hooks/summary.ts

@@ -9,7 +9,7 @@ export interface StopInput {
 
 /**
  * Summary Hook - Stop
- * Sends FINALIZE message to worker via HTTP POST
+ * Sends SUMMARIZE message to worker via HTTP POST (not finalize - keeps SDK agent running)
  */
 export async function summaryHook(input?: StopInput): Promise<void> {
   if (!input) {
@@ -19,28 +19,34 @@ export async function summaryHook(input?: StopInput): Promise<void> {
   const { session_id } = input;
   const db = new HooksDatabase();
   const session = db.findActiveSDKSession(session_id);
-  db.close();
 
   if (!session) {
+    db.close();
     console.log(createHookResponse('Stop', true));
     return;
   }
 
   if (!session.worker_port) {
+    db.close();
     console.error('[summary-hook] No worker port for session', session.id);
     console.log(createHookResponse('Stop', true));
     return;
   }
 
+  // Get current prompt number
+  const promptNumber = db.getPromptCounter(session.id);
+  db.close();
+
   try {
-    const response = await fetch(`http://127.0.0.1:${session.worker_port}/sessions/${session.id}/finalize`, {
+    const response = await fetch(`http://127.0.0.1:${session.worker_port}/sessions/${session.id}/summarize`, {
       method: 'POST',
       headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ prompt_number: promptNumber }),
       signal: AbortSignal.timeout(2000)
     });
 
     if (!response.ok) {
-      console.error('[summary-hook] Failed to finalize:', await response.text());
+      console.error('[summary-hook] Failed to generate summary:', await response.text());
     }
   } catch (error: any) {
     console.error('[summary-hook] Error:', error.message);