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/bin/hooks/context-hook.ts

@@ -7,12 +7,14 @@
 
 import { contextHook } from '../../hooks/context.js';
 
-// Read input from stdin
-const input = await Bun.stdin.text();
-
 try {
-  const parsed = input.trim() ? JSON.parse(input) : undefined;
-  contextHook(parsed);
+  if (process.stdin.isTTY) {
+    contextHook();
+  } else {
+    const input = await Bun.stdin.text();
+    const parsed = input.trim() ? JSON.parse(input) : undefined;
+    contextHook(parsed);
+  }
 } catch (error: any) {
   console.error(`[claude-mem context-hook error: ${error.message}]`);
   process.exit(0);