feat: reorganize Claude hooks and add RAG documentation structure with error handling policies

- Moved all hookify configuration files from `.claude/` to `.claude/hooks/` subdirectory for better organization
- Added four new blocking hooks to prevent common error handling anti-patterns:
  - `block-broad-exception-handler`: Prevents catching generic `Exception` with only logging
  - `block-datetime-now-fallback`: Blocks returning `datetime.now()` as fallback on parse failures to prevent data corruption
  - `block-default

repomix.config.json

@@ -27,7 +27,7 @@
     }
   },
   "include": [
-    "src/", "client/src-tauri", "client/src", "tests/"
+    "src/"
   ],
   "ignore": {
     "useGitignore": true,