ui: remove dead MCP resources menu trigger chain

Same shape as the earlier prompt trigger cleanup: nothing renders the
MCP resources menu button, and the only live entry into resource
browsing is Settings > MCP Servers plus the attachment resource
picker. Drop onMcpResourcesClick, hasMcpResourcesSupport,
MCP_RESOURCES_CLICK, the AttachmentItemVisibleWhen enum and
hasResourcesCapability; the resources display, browser and picker
components are untouched.

Assisted-by: pi

tools/ui/src/lib/components/app/chat/ChatForm/ChatForm.svelte

@@ -628,7 +628,6 @@
 				isReasoning={chatStore.isReasoning}
 				{isRecording}
 				onFileUpload={handleFileUpload}
-				onMcpResourcesClick={() => (isResourceDialogOpen = true)}
 				onMcpSettingsClick={() => (isMcpServersDialogOpen = true)}
 				onMicClick={handleMicClick}
 				{onStop}

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

@@ -30,13 +30,11 @@
 	const attachmentMenu = useAttachmentMenu(
 		() => ({
 			hasAudioModality: chatFormActions.hasAudioModality,
-			hasMcpResourcesSupport: chatFormActions.hasMcpResourcesSupport,
 			hasVideoModality: chatFormActions.hasVideoModality,
 			hasVisionModality: chatFormActions.hasVisionModality
 		}),
 		() => ({
 			onFileUpload: chatFormActions.onFileUpload,
-			onMcpResourcesClick: chatFormActions.onMcpResourcesClick,
 			onSystemPromptClick: chatFormActions.onSystemPromptClick
 		}),
 		() => {

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

@@ -44,13 +44,11 @@
 	const attachmentMenu = useAttachmentMenu(
 		() => ({
 			hasAudioModality: chatFormActions.hasAudioModality,
-			hasMcpResourcesSupport: chatFormActions.hasMcpResourcesSupport,
 			hasVideoModality: chatFormActions.hasVideoModality,
 			hasVisionModality: chatFormActions.hasVisionModality
 		}),
 		() => ({
 			onFileUpload: chatFormActions.onFileUpload,
-			onMcpResourcesClick: chatFormActions.onMcpResourcesClick,
 			onSystemPromptClick: chatFormActions.onSystemPromptClick
 		}),
 		() => {

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

@@ -11,9 +11,9 @@
 	import { Button } from '$lib/components/ui/button';
 	import { ICON_CLASS_DEFAULT } from '$lib/constants';
 	import { setChatFormActionsContext } from '$lib/contexts';
-	import { FileTypeCategory, MessageRole, ToolSource } from '$lib/enums';
+	import { FileTypeCategory, MessageRole } from '$lib/enums';
 	import { ChatService } from '$lib/services';
-	import { chatStore, conversationsStore, mcpStore, settingsStore } from '$lib/stores';
+	import { chatStore, conversationsStore, settingsStore } from '$lib/stores';
 	import { getFileTypeCategory } from '$lib/utils';
 
 	interface Props {
@@ -31,7 +31,6 @@
 		onMicClick?: () => void;
 		onStop?: () => void;
 		onSystemPromptClick?: () => void;
-		onMcpResourcesClick?: () => void;
 		onMcpSettingsClick?: () => void;
 	}
 
@@ -44,7 +43,6 @@
 		isReasoning = false,
 		isRecording = false,
 		onFileUpload,
-		onMcpResourcesClick,
 		onMcpSettingsClick,
 		onMicClick,
 		onStop,
@@ -56,23 +54,6 @@
 
 	let currentConfig = $derived(settingsStore.config);
 
-	// usable MCP servers for this conversation: globally enabled and not
-	// disabled by the effective tool policy (category or server-scoped key)
-	let policyEnabledMcpServerIds = $derived.by(() => {
-		const prefs = conversationsStore.preferences;
-
-		if (!prefs.isCategoryEnabled(ToolSource.MCP)) return new Set<string>();
-
-		return new Set(
-			mcpStore
-				.getServers()
-				.filter((s) => s.enabled && prefs.isServerToolsEnabled(s.id))
-				.map((s) => s.id)
-		);
-	});
-
-	let hasMcpResourcesSupport = $derived(mcpStore.hasResourcesCapability(policyEnabledMcpServerIds));
-
 	let hasAudioModality = $state(false);
 	let hasVideoModality = $state(false);
 	let hasVisionModality = $state(false);
@@ -145,9 +126,6 @@
 		get hasAudioModality() {
 			return hasAudioModality;
 		},
-		get hasMcpResourcesSupport() {
-			return hasMcpResourcesSupport;
-		},
 		get hasVideoModality() {
 			return hasVideoModality;
 		},
@@ -157,9 +135,6 @@
 		get onFileUpload() {
 			return onFileUpload;
 		},
-		get onMcpResourcesClick() {
-			return onMcpResourcesClick;
-		},
 		get onMcpSettingsClick() {
 			return onMcpSettingsClick;
 		},

tools/ui/src/lib/enums/attachment.enums.ts

@@ -19,7 +19,6 @@ export enum AttachmentType {
 export enum AttachmentMenuItemId {
 	AUDIO = 'audio',
 	IMAGES = 'images',
-	MCP_RESOURCES = 'mcp-resources',
 	PDF = 'pdf',
 	SYSTEM_MESSAGE = 'system-message',
 	TEXT = 'text',
@@ -41,7 +40,6 @@ export enum AttachmentItemEnabledWhen {
  */
 export enum AttachmentAction {
 	FILE_UPLOAD = 'onFileUpload',
-	MCP_RESOURCES_CLICK = 'onMcpResourcesClick',
 	SYSTEM_PROMPT_CLICK = 'onSystemPromptClick'
 }
 
@@ -54,10 +52,3 @@ export enum AttachmentLabel {
 	MCP_RESOURCE = 'MCP Resource',
 	PDF_FILE = 'PDF File'
 }
-
-/**
- * Visibility conditions for attachment menu items.
- */
-export enum AttachmentItemVisibleWhen {
-	HAS_MCP_RESOURCES_SUPPORT = 'hasMcpResourcesSupport'
-}

tools/ui/src/lib/enums/index.ts

@@ -3,8 +3,7 @@ export {
 	AttachmentType,
 	AttachmentMenuItemId,
 	AttachmentItemEnabledWhen,
-	AttachmentAction,
+	AttachmentAction
-	AttachmentItemVisibleWhen
 } from './attachment.enums';
 
 export {

tools/ui/src/lib/hooks/use-attachment-menu.svelte.ts

@@ -5,19 +5,16 @@ export interface AttachmentModalityFlags {
 	hasVisionModality: boolean;
 	hasAudioModality: boolean;
 	hasVideoModality: boolean;
-	hasMcpResourcesSupport: boolean;
 }
 
 export interface AttachmentActionCallbacks {
 	onFileUpload?: () => void;
 	onSystemPromptClick?: () => void;
-	onMcpResourcesClick?: () => void;
 }
 
 export interface UseAttachmentMenuReturn {
 	readonly callbacks: Record<string, () => void>;
 	isItemEnabled(enabledWhen: string | undefined): boolean;
-	isItemVisible(visibleWhen: string | undefined): boolean;
 	getSystemMessageTooltip(): string;
 }
 
@@ -47,7 +44,6 @@ export function useAttachmentMenu(
 
 		return {
 			[AttachmentAction.FILE_UPLOAD]: wrap(cbs.onFileUpload),
-			[AttachmentAction.MCP_RESOURCES_CLICK]: wrap(cbs.onMcpResourcesClick),
 			[AttachmentAction.SYSTEM_PROMPT_CLICK]: wrap(cbs.onSystemPromptClick)
 		};
 	});
@@ -58,12 +54,6 @@ export function useAttachmentMenu(
 		return !!modalityFlags[enabledWhen as keyof AttachmentModalityFlags];
 	}
 
-	function isItemVisible(visibleWhen: string | undefined): boolean {
-		if (!visibleWhen) return true;
-
-		return !!modalityFlags[visibleWhen as keyof AttachmentModalityFlags];
-	}
-
 	function getSystemMessageTooltip(): string {
 		return !page.params.id
 			? 'Add custom system message for a new conversation'
@@ -75,7 +65,6 @@ export function useAttachmentMenu(
 			return callbacks;
 		},
 		getSystemMessageTooltip,
-		isItemEnabled,
+		isItemEnabled
-		isItemVisible
 	};
 }

tools/ui/src/lib/stores/mcp/index.svelte.ts

@@ -811,40 +811,6 @@ class MCPStore implements McpHealthHost {
 		return Boolean(this.buildMcpClientConfig(settingsStore.config));
 	}
 
-	/**
-	 * Check if any enabled server with successful health check supports resources.
-	 * Uses health check state since servers may not have active connections until
-	 * the user actually sends a message or uses prompts.
-	 */
-	hasResourcesCapability(enabledServerIds?: ReadonlySet<string>): boolean {
-		const ids = enabledServerIds ?? this.globalEnabledServerIds();
-
-		if (ids.size === 0) {
-			return false;
-		}
-
-		for (const [serverId, state] of Object.entries(this.health.checks)) {
-			if (!ids.has(serverId)) continue;
-
-			if (
-				state.status === HealthCheckStatus.SUCCESS &&
-				state.capabilities?.server?.resources !== undefined
-			) {
-				return true;
-			}
-		}
-
-		for (const [serverName, connection] of this.connections) {
-			if (!ids.has(serverName)) continue;
-
-			if (MCPService.supportsResources(connection)) {
-				return true;
-			}
-		}
-
-		return false;
-	}
-
 	/**
 	 * Check if any connected server has instructions.
 	 */

tools/ui/src/lib/types/chat.d.ts

@@ -3,7 +3,6 @@ import type { DatabaseMessage, DatabaseMessageExtra } from './database';
 import type {
 	AttachmentAction,
 	AttachmentItemEnabledWhen,
-	AttachmentItemVisibleWhen,
 	AttachmentMenuItemId,
 	ChatFormCommandAction,
 	ErrorDialogType,
@@ -30,8 +29,6 @@ export interface AttachmentMenuItem {
 	disabledTooltip?: string;
 	/** Callback key on the Props interface to invoke when clicked */
 	action: AttachmentAction;
-	/** Whether the item is only shown when a specific capability is present */
-	visibleWhen?: AttachmentItemVisibleWhen;
 	/** Whether this item has a tooltip even when enabled (uses dynamic text) */
 	hasEnabledTooltip?: boolean;
 }
@@ -336,9 +333,7 @@ export interface ChatFormActionsContext {
 	readonly hasAudioModality: boolean;
 	readonly hasVideoModality: boolean;
 	readonly hasVisionModality: boolean;
-	readonly hasMcpResourcesSupport: boolean;
 	onFileUpload?: () => void;
 	onSystemPromptClick?: () => void;
-	onMcpResourcesClick?: () => void;
 	onMcpSettingsClick?: () => void;
 }