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

tools/ui/src/lib/components/app/chat/ChatForm/ChatFormActions/ChatFormActionAdd/ChatFormActionAddMcpServersSubmenu.svelte

@@ -1,152 +0,0 @@
-<script lang="ts">
-	import { Plus, Settings } from '@lucide/svelte';
-	import { goto } from '$app/navigation';
-	import { DropdownMenuSearchable, McpLogo, McpServerIdentity } from '$lib/components/app';
-	import * as DropdownMenu from '$lib/components/ui/dropdown-menu';
-	import { Switch } from '$lib/components/ui/switch';
-	import { ICON_CLASS_DEFAULT, ROUTES } from '$lib/constants';
-	import { HealthCheckStatus } from '$lib/enums';
-	import { conversationsStore, mcpStore } from '$lib/stores';
-	import type { MCPServerSettingsEntry } from '$lib/types';
-
-	interface Props {
-		onMcpSettingsClick?: () => void;
-	}
-
-	let { onMcpSettingsClick }: Props = $props();
-
-	let mcpSearchQuery = $state('');
-	// Every configured server is listed; `enabled` is an on/off state,
-	// not a visibility filter, so a disabled server stays toggleable.
-	let mcpServers = $derived(mcpStore.getServers());
-	let hasMcpServers = $derived(mcpServers.length > 0);
-	let filteredMcpServers = $derived.by(() => {
-		const query = mcpSearchQuery.toLowerCase().trim();
-
-		if (!query) return mcpServers;
-
-		return mcpServers.filter((s) => {
-			const name = getServerLabel(s).toLowerCase();
-			const url = s.url.toLowerCase();
-
-			return name.includes(query) || url.includes(query);
-		});
-	});
-
-	function getServerLabel(server: MCPServerSettingsEntry): string {
-		return mcpStore.getServerLabel(server);
-	}
-
-	function isServerEnabledForChat(serverId: string): boolean {
-		return conversationsStore.preferences.isMcpServerEnabledForChat(serverId);
-	}
-
-	async function toggleServerForChat(serverId: string) {
-		await conversationsStore.preferences.toggleMcpServerForChat(serverId);
-	}
-
-	function handleMcpSubMenuOpen(open: boolean) {
-		if (open) {
-			mcpSearchQuery = '';
-			mcpStore.runHealthChecksForServers(mcpServers);
-		}
-	}
-
-	function handleMcpSettingsClick() {
-		onMcpSettingsClick?.();
-
-		goto(`${hasMcpServers ? '' : '?add'}${ROUTES.MCP_SERVERS}`);
-	}
-</script>
-
-<DropdownMenu.Root>
-	<DropdownMenu.Sub onOpenChange={handleMcpSubMenuOpen}>
-		<DropdownMenu.SubTrigger class="flex cursor-pointer items-center gap-2">
-			<McpLogo class={ICON_CLASS_DEFAULT} />
-
-			<span>MCP Servers</span>
-		</DropdownMenu.SubTrigger>
-
-		<DropdownMenu.SubContent class="w-72 pt-0">
-			{#if hasMcpServers}
-				<DropdownMenuSearchable
-					bind:searchValue={mcpSearchQuery}
-					emptyMessage="No servers found"
-					isEmpty={filteredMcpServers.length === 0}
-					placeholder="Search servers..."
-				>
-					<div class="max-h-64 overflow-y-auto">
-						{#each filteredMcpServers as server (server.id)}
-							{@const healthState = mcpStore.getHealthCheckState(server.id)}
-							{@const hasError = healthState.status === HealthCheckStatus.ERROR}
-							{@const isEnabledForChat = isServerEnabledForChat(server.id)}
-							{@const displayName = getServerLabel(server)}
-							{@const faviconUrl = mcpStore.getServerFavicon(server.id)}
-
-							<button
-								class="flex w-full items-center justify-between gap-2 rounded-sm px-2 py-2 text-left transition-colors hover:bg-accent disabled:cursor-not-allowed disabled:opacity-50"
-								disabled={hasError}
-								onclick={() => !hasError && toggleServerForChat(server.id)}
-								type="button"
-							>
-								<div class="flex min-w-0 flex-1 items-center gap-2">
-									<div class="min-w-0 flex-1">
-										<McpServerIdentity
-											{displayName}
-											{faviconUrl}
-											iconClass={ICON_CLASS_DEFAULT}
-											iconRounded="rounded-sm"
-											nameClass="text-sm"
-											showVersion={false}
-										/>
-									</div>
-
-									{#if hasError}
-										<span
-											class="shrink-0 rounded bg-destructive/15 px-1.5 py-0.5 text-xs text-destructive"
-										>
-											Error
-										</span>
-									{/if}
-								</div>
-
-								<Switch
-									checked={isEnabledForChat}
-									disabled={hasError}
-									onCheckedChange={() => toggleServerForChat(server.id)}
-									onclick={(e) => e.stopPropagation()}
-								/>
-							</button>
-						{/each}
-					</div>
-
-					{#snippet footer()}
-						<DropdownMenu.Item
-							class="flex cursor-pointer items-center gap-2"
-							onclick={handleMcpSettingsClick}
-						>
-							<Settings class={ICON_CLASS_DEFAULT} />
-
-							<span>Manage MCP Servers</span>
-						</DropdownMenu.Item>
-					{/snippet}
-				</DropdownMenuSearchable>
-			{:else}
-				<div class="px-2 py-3 text-center text-sm text-muted-foreground">
-					No MCP servers configured
-				</div>
-
-				<DropdownMenu.Separator />
-
-				<DropdownMenu.Item
-					class="flex cursor-pointer items-center gap-2"
-					onclick={handleMcpSettingsClick}
-				>
-					<Plus class={ICON_CLASS_DEFAULT} />
-
-					<span>Add MCP Servers</span>
-				</DropdownMenu.Item>
-			{/if}
-		</DropdownMenu.SubContent>
-	</DropdownMenu.Sub>
-</DropdownMenu.Root>