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.

hermes_cli/banner.py

@@ -626,6 +626,11 @@ def build_welcome_banner(console: "Console", model: str, cwd: str,
                     f"[dim {dim}]{srv['name']}[/] [{text}]({srv['transport']})[/] "
                     f"[dim {dim}]—[/] [{text}]{srv['tools']} tool(s)[/]"
                 )
+            elif srv.get("disabled"):
+                right_lines.append(
+                    f"[dim {dim}]{srv['name']}[/] [dim]({srv['transport']})[/] "
+                    f"[dim {dim}]— disabled[/]"
+                )
             else:
                 right_lines.append(
                     f"[red]{srv['name']}[/] [dim]({srv['transport']})[/] "