Fix Internal Server Error after SSH server add (server_info must be a dict).

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

app.py

@@ -2273,11 +2273,17 @@ async def api_add_server(request: Request, req: AddServerRequest):
         ssh = SSHManager(host, req.ssh_port, username, req.password, req.private_key)
         try:
             ssh.connect()
-            server_info = ssh.test_connection()
+            raw_info = ssh.test_connection()
             ssh.disconnect()
         except Exception as e:
             return JSONResponse({'error': f'Connection failed: {str(e)}'}, status_code=400)
 
+        # Always store as an object — legacy test_connection() returns a plain string
+        if isinstance(raw_info, dict):
+            server_info = raw_info
+        else:
+            server_info = {'uname': str(raw_info or '').strip()}
+
         server = {
             'name': name, 'host': host, 'ssh_port': req.ssh_port,
             'username': username, 'password': req.password,
@@ -2328,11 +2334,16 @@ async def api_edit_server(request: Request, server_id: int, req: EditServerReque
         ssh = SSHManager(new_host, new_port, new_user, new_pass, new_key)
         try:
             ssh.connect()
-            server_info = ssh.test_connection()
+            raw_info = ssh.test_connection()
             ssh.disconnect()
         except Exception as e:
             return JSONResponse({'error': f'Connection failed: {e}'}, status_code=400)
 
+        if isinstance(raw_info, dict):
+            server_info = raw_info
+        else:
+            server_info = {'uname': str(raw_info or '').strip()}
+
         server['name'] = new_name
         server['host'] = new_host
         server['ssh_port'] = new_port

db/store.py

@@ -94,6 +94,33 @@ def _merge_settings(raw: Optional[dict]) -> dict:
     return settings
 
 
+def _as_dict(value, default=None):
+    """Coerce JSONB / legacy values to a plain dict."""
+    if default is None:
+        default = {}
+    if value is None:
+        return dict(default)
+    if isinstance(value, dict):
+        return dict(value)
+    # Legacy: ssh.test_connection() used to return a plain string
+    if isinstance(value, str):
+        text = value.strip()
+        if not text:
+            return dict(default)
+        if text.startswith('{') or text.startswith('['):
+            try:
+                parsed = json.loads(text)
+                if isinstance(parsed, dict):
+                    return parsed
+            except Exception:
+                pass
+        return {'raw': text}
+    try:
+        return dict(value)
+    except Exception:
+        return {'raw': str(value)}
+
+
 def _row_to_server(row) -> dict:
     return {
         'name': row['name'] or '',
@@ -102,8 +129,8 @@ def _row_to_server(row) -> dict:
         'username': row['username'] or '',
         'password': row['password'],
         'private_key': row['private_key'],
-        'server_info': dict(row['server_info'] or {}),
+        'server_info': _as_dict(row['server_info']),
-        'protocols': dict(row['protocols'] or {}),
+        'protocols': _as_dict(row['protocols']),
     }
 
 
@@ -241,8 +268,8 @@ def save_data(data: dict) -> None:
                         server.get('username') or '',
                         server.get('password'),
                         server.get('private_key'),
-                        Jsonb(server.get('server_info') or {}),
+                        Jsonb(_as_dict(server.get('server_info'))),
-                        Jsonb(server.get('protocols') or {}),
+                        Jsonb(_as_dict(server.get('protocols'))),
                     ),
                 )