fix(mcp): banner shows 'disabled' not 'failed' for enabled:false servers (#38204)

get_mcp_status() treated every non-connected server as a failure, so a
server configured with enabled: false rendered as red '— failed' in the
startup banner even though it was intentionally off. Add a 'disabled'
field derived from the enabled flag and render disabled servers dim as
'— disabled' instead.

tools/mcp_tool.py

@@ -3666,6 +3666,7 @@ def get_mcp_status() -> List[dict]:
 
     for name, cfg in configured.items():
         transport = cfg.get("transport", "http") if "url" in cfg else "stdio"
+        enabled = _parse_boolish(cfg.get("enabled", True), default=True)
         server = active_servers.get(name)
         if server and server.session is not None:
             entry = {
@@ -3673,16 +3674,21 @@ def get_mcp_status() -> List[dict]:
                 "transport": transport,
                 "tools": len(server._registered_tool_names) if hasattr(server, "_registered_tool_names") else len(server._tools),
                 "connected": True,
+                "disabled": False,
             }
             if server._sampling:
                 entry["sampling"] = dict(server._sampling.metrics)
             result.append(entry)
         else:
+            # A server with enabled: false is intentionally not connected — it is
+            # disabled, not failed. Surface that distinction so consumers (banner,
+            # TUI) can render "disabled" rather than an alarming "failed".
             result.append({
                 "name": name,
                 "transport": transport,
                 "tools": 0,
                 "connected": False,
+                "disabled": not enabled,
             })
 
     return result