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/new.ts

@@ -1,6 +1,7 @@
-import { HooksDatabase } from '../services/sqlite/HooksDatabase.js';
-import path from 'path';
 import { spawn } from 'child_process';
+import path from 'path';
+import { HooksDatabase } from '../services/sqlite/HooksDatabase.js';
+import { createHookResponse } from './hook-response.js';
 
 export interface UserPromptSubmitInput {
   session_id: string;
@@ -26,7 +27,7 @@ export function newHook(input?: UserPromptSubmitInput): void {
     const existing = db.findActiveSDKSession(session_id);
 
     if (existing) {
-      console.log('{"continue": true, "suppressOutput": true}');
+      console.log(createHookResponse('UserPromptSubmit', true));
       return;
     }
 
@@ -46,7 +47,7 @@ export function newHook(input?: UserPromptSubmitInput): void {
 
     child.unref();
 
-    console.log('{"continue": true, "suppressOutput": true}');
+    console.log(createHookResponse('UserPromptSubmit', true));
   } finally {
     db.close();
   }