Refactor hooks to standardize response format and improve error handling

- Introduced a new `hook-response.ts` module to create standardized hook responses.
- Updated `context-hook.ts`, `new.ts`, `save.ts`, and `summary.ts` to utilize the new response format.
- Enhanced error handling in `context-hook.ts` to check for input from stdin.
- Refactored database interaction in hooks to ensure consistent session management.
- Improved readability and maintainability of hook implementations by restructuring code.
- Updated database queries to use consistent variable naming and formatting.
- Modified the handling of socket connections in `save.ts` and `summary.ts` to ensure proper response on close and error events.

src/hooks/summary.ts

@@ -1,6 +1,7 @@
 import net from 'net';
 import { HooksDatabase } from '../services/sqlite/HooksDatabase.js';
 import { getWorkerSocketPath } from '../shared/paths.js';
+import { createHookResponse } from './hook-response.js';
 
 export interface StopInput {
   session_id: string;
@@ -23,7 +24,7 @@ export function summaryHook(input?: StopInput): void {
   db.close();
 
   if (!session) {
-    console.log('{"continue": true, "suppressOutput": true}');
+    console.log(createHookResponse('Stop', true));
     return;
   }
 
@@ -37,7 +38,15 @@ export function summaryHook(input?: StopInput): void {
     client.end();
   });
 
-  client.on('close', () => {
-    console.log('{"continue": true, "suppressOutput": true}');
-  });
+  let responded = false;
+  const respond = () => {
+    if (responded) {
+      return;
+    }
+    responded = true;
+    console.log(createHookResponse('Stop', true));
+  };
+
+  client.on('close', respond);
+  client.on('error', respond);
 }