Add disabled field to MCP server notifications

Include a `disabled` boolean in tool-server-updated notifications so
clients can distinguish between stopped and config-disabled servers.
This enables proper button rendering (e.g. showing "enable" instead
of "disable" when a config-disabled server is manually started).

Also fix disable-server! to pass the updated config to ->server
rather than the stale pre-write value.

Closes #403

🤖 Generated with [eca](https://eca.dev)

Co-Authored-By: eca-agent <git@eca.dev>

Author: ericdallo

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 - Refresh auth token before each LLM API call, preventing stale tokens during long-running tool calls.
 - Add background shell command support via `background` parameter on `shell_command` tool and new `bg_job` tool for managing long-running processes. #77
+- Add `disabled` field to MCP server notifications, allowing clients to distinguish between stopped and config-disabled servers. #403
 
 ## 0.124.5
 

docs/protocol.md

@@ -2172,6 +2172,11 @@ interface MCPServerUpdatedParams {
      */
     status: 'running' | 'starting' | 'stopped' | 'failed' | 'disabled' | 'requires-auth';
 
+    /**
+     * Whether the server is disabled.
+     */
+    disabled: boolean;
+
     /**
      * Whether the server has an OAuth access token.
      */

src/eca/features/tools/mcp.clj

@@ -192,6 +192,7 @@
    :resources (get-in db [:mcp-clients mcp-name :resources])
    :instructions (get-in db [:mcp-clients mcp-name :instructions])
    :has-auth (boolean (get-in db [:mcp-auth mcp-name :access-token]))
+   :disabled (boolean (:disabled server-config))
    :status status})
 
 (defn ^:private ->content [content-client]
@@ -626,7 +627,7 @@
     (memoize/memo-clear! config/all)
     (when (get-in db [:mcp-clients server-name :client])
       (stop-server! server-name db* config {:on-server-updated on-server-updated}))
-    (on-server-updated (->server server-name server-config :disabled @db*))))
+    (on-server-updated (->server server-name (assoc server-config :disabled true) :disabled @db*))))
 
 (defn enable-server!
   "Enable an MCP server: remove disabled from config, start the server, notify."