feat: pipe MCP annotations.title through to ClineAskUseMcpServer

Add annotations field to McpTool type to capture MCP tool metadata
(title, readOnlyHint, destructiveHint, etc). Pass annotations.title
as toolTitle in the ClineAskUseMcpServer payload so downstream
consumers (web UI) can display human-readable labels instead of
generic "Used MCP tool" text.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

packages/types/src/mcp.ts

@@ -73,6 +73,13 @@ export type McpTool = {
 	inputSchema?: object
 	alwaysAllow?: boolean
 	enabledForPrompt?: boolean
+	annotations?: {
+		title?: string
+		readOnlyHint?: boolean
+		destructiveHint?: boolean
+		idempotentHint?: boolean
+		openWorldHint?: boolean
+	}
 }
 
 export type McpResource = {

packages/types/src/vscode-extension-host.ts

@@ -845,6 +845,7 @@ export interface ClineAskUseMcpServer {
 	serverName: string
 	type: "use_mcp_tool" | "access_mcp_resource"
 	toolName?: string
+	toolTitle?: string
 	arguments?: string
 	uri?: string
 	response?: string

src/core/tools/UseMcpToolTool.ts

@@ -56,6 +56,7 @@ export class UseMcpToolTool extends BaseTool<"use_mcp_tool"> {
 				type: "use_mcp_tool",
 				serverName,
 				toolName: resolvedToolName,
+				toolTitle: toolValidation.resolvedToolTitle,
 				arguments: params.arguments ? JSON.stringify(params.arguments) : undefined,
 			} satisfies ClineAskUseMcpServer)
 
@@ -142,7 +143,7 @@ export class UseMcpToolTool extends BaseTool<"use_mcp_tool"> {
 		serverName: string,
 		toolName: string,
 		pushToolResult: (content: string) => void,
-	): Promise<{ isValid: boolean; availableTools?: string[]; resolvedToolName?: string }> {
+	): Promise<{ isValid: boolean; availableTools?: string[]; resolvedToolName?: string; resolvedToolTitle?: string }> {
 		try {
 			// Get the MCP hub to access server information
 			const provider = task.providerRef.deref()
@@ -238,7 +239,12 @@ export class UseMcpToolTool extends BaseTool<"use_mcp_tool"> {
 			}
 
 			// Tool exists and is enabled - return the original tool name for use with the MCP server
-			return { isValid: true, availableTools: server.tools.map((t) => t.name), resolvedToolName: tool.name }
+			return {
+				isValid: true,
+				availableTools: server.tools.map((t) => t.name),
+				resolvedToolName: tool.name,
+				resolvedToolTitle: tool.annotations?.title,
+			}
 		} catch (error) {
 			// If there's an error during validation, log it but don't block the tool execution
 			// The actual tool call might still fail with a proper error