feat(dashboard): add hide/show toggle for dashboard plugins in sidebar

- New config key: dashboard.hidden_plugins (list of plugin names)
- GET /api/dashboard/plugins now filters out hidden plugins from sidebar
- POST /api/dashboard/plugins/{name}/visibility toggles visibility
- Hub response includes user_hidden boolean per plugin row
- Eye/EyeOff toggle on plugin cards with dashboard manifests
- i18n: 'Show in sidebar' / 'Hide from sidebar' (en/zh)

hermes_cli/web_server.py

@@ -3617,12 +3617,16 @@ def _get_dashboard_plugins(force_rescan: bool = False) -> list:
 
 @app.get("/api/dashboard/plugins")
 async def get_dashboard_plugins():
-    """Return discovered dashboard plugins."""
+    """Return discovered dashboard plugins (excludes user-hidden ones)."""
     plugins = _get_dashboard_plugins()
-    # Strip internal fields before sending to frontend.
+    # Read user's hidden plugins list from config.
+    config = load_config()
+    hidden: list = cfg_get(config, "dashboard", "hidden_plugins", default=[]) or []
+    # Strip internal fields before sending to frontend and filter out hidden.
     return [
         {k: v for k, v in p.items() if not k.startswith("_")}
         for p in plugins
+        if p["name"] not in hidden
     ]
 
 
@@ -3662,6 +3666,10 @@ def _merged_plugins_hub() -> Dict[str, Any]:
     disabled_set = _get_disabled_set()
     enabled_set = _get_enabled_set()
 
+    # Read user-hidden plugins from config for the user_hidden field.
+    config = load_config()
+    hidden_plugins: list = cfg_get(config, "dashboard", "hidden_plugins", default=[]) or []
+
     plugins_root_resolved = (get_hermes_home() / "plugins").resolve()
     rows: List[Dict[str, Any]] = []
 
@@ -3718,6 +3726,7 @@ def _merged_plugins_hub() -> Dict[str, Any]:
             "can_update_git": can_remove_update and (Path(dir_str) / ".git").exists(),
             "auth_required": auth_required,
             "auth_command": auth_command,
+            "user_hidden": name in hidden_plugins,
         })
 
     agent_names = {r["name"] for r in rows}
@@ -3863,6 +3872,33 @@ async def put_plugin_providers(request: Request, body: _PluginProvidersPutBody):
     return {"ok": True}
 
 
+class _PluginVisibilityBody(BaseModel):
+    hidden: bool
+
+
+@app.post("/api/dashboard/plugins/{name}/visibility")
+async def post_plugin_visibility(request: Request, name: str, body: _PluginVisibilityBody):
+    """Toggle a plugin's sidebar visibility (persists to config.yaml dashboard.hidden_plugins)."""
+    _require_token(request)
+    name = _validate_plugin_name(name)
+
+    config = load_config()
+    if "dashboard" not in config or not isinstance(config.get("dashboard"), dict):
+        config["dashboard"] = {}
+    hidden_list: list = config["dashboard"].get("hidden_plugins") or []
+    if not isinstance(hidden_list, list):
+        hidden_list = []
+
+    if body.hidden and name not in hidden_list:
+        hidden_list.append(name)
+    elif not body.hidden and name in hidden_list:
+        hidden_list.remove(name)
+
+    config["dashboard"]["hidden_plugins"] = hidden_list
+    save_config(config)
+    return {"ok": True, "name": name, "hidden": body.hidden}
+
+
 @app.get("/dashboard-plugins/{plugin_name}/{file_path:path}")
 async def serve_plugin_asset(plugin_name: str, file_path: str):
     """Serve static assets from a dashboard plugin directory.