Add Amnezia Web Panel source with PostgreSQL 17 storage.

Co-authored-by: Cursor <cursoragent@cursor.com>

db/migrate_json.py

@@ -0,0 +1,58 @@
+"""One-shot CLI: import legacy data.json into PostgreSQL.
+
+Usage:
+  python -m db.migrate_json [path/to/data.json]
+"""
+
+from __future__ import annotations
+
+import logging
+import os
+import sys
+
+from dotenv import load_dotenv
+
+load_dotenv()
+
+logging.basicConfig(level=logging.INFO, format='%(levelname)s: %(message)s')
+logger = logging.getLogger('migrate_json')
+
+
+def main(argv: list[str] | None = None) -> int:
+    argv = list(argv if argv is not None else sys.argv[1:])
+    force = '--force' in argv
+    paths = [a for a in argv if not a.startswith('-')]
+
+    if getattr(sys, 'frozen', False):
+        app_path = os.path.dirname(sys.executable)
+    else:
+        app_path = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+
+    data_file = paths[0] if paths else os.path.join(app_path, 'data.json')
+
+    from db.store import import_from_json_file, is_database_empty, load_data
+
+    if not os.path.exists(data_file):
+        logger.error('File not found: %s', data_file)
+        return 1
+
+    if not is_database_empty():
+        logger.warning('Database is not empty — import will overwrite panel tables.')
+        if not force:
+            logger.error('Re-run with --force to overwrite existing data.')
+            return 2
+
+    import_from_json_file(data_file, backup=True)
+    data = load_data()
+    logger.info(
+        'Done. servers=%s users=%s connections=%s tokens=%s',
+        len(data['servers']),
+        len(data['users']),
+        len(data['user_connections']),
+        len(data['api_tokens']),
+    )
+    return 0
+
+
+if __name__ == '__main__':
+    raise SystemExit(main())