Update Python/JS hooks to clean JSONL format + add audit report

Phase 4 Plugin Audit Progress:
- Audited all 6 Dependency hooks (all already compliant)
- Audited all 11 Crawl Validate hooks (all already compliant)
- Updated 8 Python Snapshot hooks to clean JSONL format
- Updated 1 JS Snapshot hook (title.js) to clean JSONL format

Snapshot hooks updated to remove:
- RESULT_JSON= prefix
- Extra output lines (START_TS=, END_TS=, DURATION=, VERSION=, OUTPUT=, STATUS=)

Now output clean JSONL:
{"type": "ArchiveResult", "status": "...", "output_str": "..."}

Added implementation report to TODO_hook_architecture.md documenting:
- All completed phases (1, 3, 6, 7)
- Plugin audit results with status tables
- Remaining 13 JS hooks that need updating
- Files modified list

archivebox/plugins/git/on_Snapshot__12_git.py

@@ -153,38 +153,23 @@ def main(url: str, snapshot_id: str):
         error = f'{type(e).__name__}: {e}'
         status = 'failed'
 
-    # Print results
+    # Calculate duration
     end_ts = datetime.now(timezone.utc)
-    duration = (end_ts - start_ts).total_seconds()
-
-    print(f'START_TS={start_ts.isoformat()}')
-    print(f'END_TS={end_ts.isoformat()}')
-    print(f'DURATION={duration:.2f}')
-    if binary:
-        print(f'CMD={binary} clone {url}')
-    if version:
-        print(f'VERSION={version}')
-    if output:
-        print(f'OUTPUT={output}')
-    print(f'STATUS={status}')
 
     if error:
-        print(f'ERROR={error}', file=sys.stderr)
+        print(f'ERROR: {error}', file=sys.stderr)
 
-    # Print JSON result
-    result_json = {
-        'extractor': EXTRACTOR_NAME,
-        'url': url,
-        'snapshot_id': snapshot_id,
+    # Output clean JSONL (no RESULT_JSON= prefix)
+    result = {
+        'type': 'ArchiveResult',
         'status': status,
-        'start_ts': start_ts.isoformat(),
-        'end_ts': end_ts.isoformat(),
-        'duration': round(duration, 2),
-        'cmd_version': version,
-        'output': output,
-        'error': error or None,
+        'output_str': output or error or '',
     }
-    print(f'RESULT_JSON={json.dumps(result_json)}')
+    if binary:
+        result['cmd'] = [binary, 'clone', '--depth=1', '--recursive', url, OUTPUT_DIR]
+    if version:
+        result['cmd_version'] = version
+    print(json.dumps(result))
 
     sys.exit(0 if status == 'succeeded' else 1)