ui: Move Settings and MCP Servers routes to dialog-based views (#27744)

* ui : open MCP servers in a dialog from the chat form

Replace the MCP servers submenu with a single "MCP Servers" item that opens
a new DialogMcpServers dialog instead of navigating to the /mcp-servers route.

Assisted-by: pi

* ui : browse MCP resources from the server card

Make the Resources capability badge clickable so it opens the MCP resources
browser dialog, and drop the page-only chrome from SettingsMcpServers.

Assisted-by: pi

* ui : remove mcp-servers route and sidebar entry

MCP servers are now managed in a dialog, so drop the dedicated route and the
sidebar icon that navigated to it.

Assisted-by: pi

* ui : remove unused MCP servers submenu component

The submenu was replaced by the MCP servers dialog, so delete the component
and its export.

Assisted-by: pi

* feat(ui): add DialogSettingsChat dialog

* refactor(ui): switch SettingsChat to in-app section navigation

* feat(ui): open settings as dialog from sidebar

* refactor(ui): remove settings route and URL-based settings navigation

* fix(ui): adjust MCP dialogs for new base sizing

* chore: Formatting & linting

tools/ui/src/lib/constants/routes.constants.ts

@@ -15,10 +15,6 @@ export const ROUTES = {
 	MCP_SERVERS: '#/mcp-servers',
 	/** Search — mobile-only full-page conversation search. */
 	SEARCH: '#/search',
-	/** Settings base — for dynamic settings URLs use RouterService. */
-	SETTINGS: '#/settings',
-	/** Exit destination for the settings view (fallback when no referrer). */
-	SETTINGS_EXIT: '#/',
 	/** Root — start of the app. */
 	START: '#/'
 } as const;

tools/ui/src/lib/constants/ui.constants.ts

@@ -1,6 +1,4 @@
-import { ROUTES } from './routes.constants';
 import { Package, Search, Settings, SquarePen } from '@lucide/svelte';
-import McpLogo from '$lib/components/app/mcp/McpLogo.svelte';
 import { SidebarAction, ToolSource } from '$lib/enums';
 import type { DesktopIconStripItem } from '$lib/types';
 
@@ -64,15 +62,8 @@ export const SIDEBAR_ACTIONS_ITEMS: DesktopIconStripItem[] = [
 	},
 	{ icon: Search, keys: ['cmd', 'k'], tooltip: 'Search' },
 	{
-		activeRouteId: '/mcp-servers',
-		icon: McpLogo,
-		route: ROUTES.MCP_SERVERS,
-		tooltip: 'MCP Servers'
-	},
-	{
-		activeUrlIncludes: '#/settings',
+		action: SidebarAction.SETTINGS,
 		icon: Settings,
-		route: `${ROUTES.SETTINGS}/general`,
 		tooltip: 'Settings'
 	}
 ];