refactor: use typed window.metonaDesktop instead of (window as any)

Replaced all '(window as any).metonaDesktop' with the properly typed
'window.metonaDesktop' across mcp-client.ts, skill-manager.ts,
agent-engine.ts, and log-service.ts. The MetonaDesktopAPI type is
already declared in types.d.ts, so the 'as any' cast was unnecessary
and bypassed type checking.

src/renderer/services/agent-engine.ts

@@ -170,7 +170,7 @@ function parseToolCallsFromText(content: string): ToolCall[] {
 
 /** v4.2: 从对话中自动推断用户画像 */
 async function inferUserProfile(userMsg: string, assistantMsg: string): Promise<void> {
-  const bridge = (window as any).metonaDesktop;
+  const bridge = window.metonaDesktop;
   if (!bridge?.db?.getSetting) return;
 
   const profile: Record<string, unknown> = await bridge.db.getSetting('user_profile', {}) || {};
@@ -365,7 +365,7 @@ export interface AgentCallbacks {
 /** 保存执行轨迹到 SQLite */
 async function saveTrace(trace: Omit<TraceEntry, 'id' | 'createdAt'>): Promise<void> {
   try {
-    const bridge = (window as any).metonaDesktop;
+    const bridge = window.metonaDesktop;
     if (!bridge?.db) return;
     const entry = {
       id: `trace_${generateId()}`,

src/renderer/services/log-service.ts

@@ -212,7 +212,7 @@ async function exportLog(): Promise<void> {
   const content = header + lines.join('\n');
 
   try {
-    const bridge = (window as any).metonaDesktop;
+    const bridge = window.metonaDesktop;
     if (bridge) {
       const ts = new Date().toISOString().slice(0, 19).replace(/[T:]/g, '-');
       const filePath = await bridge.dialog.saveFile({

src/renderer/services/mcp-client.ts

@@ -45,7 +45,7 @@ export async function addMCPServer(config: MCPServerConfig): Promise<void> {
 }
 
 export async function removeMCPServer(name: string): Promise<void> {
-  const bridge = (window as any).metonaDesktop;
+  const bridge = window.metonaDesktop;
   if (bridge?.mcp) await bridge.mcp.stopServer(name);
   const servers = await getMCPServers();
   await saveMCPServers(servers.filter(s => s.name !== name));
@@ -71,7 +71,7 @@ export async function getEnabledMCPServers(): Promise<MCPServerConfig[]> {
 
 /** 启动所有已启用的 MCP 服务器 */
 export async function startAllMCPServers(): Promise<void> {
-  const bridge = (window as any).metonaDesktop;
+  const bridge = window.metonaDesktop;
   if (!bridge?.mcp) return;
 
   const configs = await getEnabledMCPServers();
@@ -91,13 +91,13 @@ export async function startAllMCPServers(): Promise<void> {
 
 /** 停止所有 MCP 服务器 */
 export async function stopAllMCPServers(): Promise<void> {
-  const bridge = (window as any).metonaDesktop;
+  const bridge = window.metonaDesktop;
   if (bridge?.mcp) await bridge.mcp.stopAll();
 }
 
 /** 获取 MCP 服务器状态 */
 export async function getMCPServerStatuses(): Promise<Array<{ name: string; running: boolean; toolCount: number }>> {
-  const bridge = (window as any).metonaDesktop;
+  const bridge = window.metonaDesktop;
   if (!bridge?.mcp) return [];
   try {
     return await bridge.mcp.getStatuses();
@@ -110,7 +110,7 @@ export async function getMCPServerStatuses(): Promise<Array<{ name: string; runn
 
 /** 从主进程获取所有 MCP 工具并转换为 ToolDefinition 格式 */
 export async function getMCPToolDefinitions(): Promise<ToolDefinition[]> {
-  const bridge = (window as any).metonaDesktop;
+  const bridge = window.metonaDesktop;
   if (!bridge?.mcp) return [];
 
   try {
@@ -146,7 +146,7 @@ export async function getMCPToolDefinitions(): Promise<ToolDefinition[]> {
 
 /** 执行 MCP 工具调用 */
 export async function executeMCPTool(toolName: string, args: Record<string, unknown>): Promise<ToolResult> {
-  const bridge = (window as any).metonaDesktop;
+  const bridge = window.metonaDesktop;
   if (!bridge?.mcp) {
     return { success: false, error: 'MCP API 不可用' };
   }

src/renderer/services/skill-manager.ts

@@ -47,7 +47,7 @@ export async function extractSkillsFromToolRecords(
   userMessage: string,
   sessionTitle: string
 ): Promise<number> {
-  const bridge = (window as any).metonaDesktop;
+  const bridge = window.metonaDesktop;
   if (!bridge?.db?.saveSkill) return 0;
 
   // 只看成功的工具调用
@@ -117,7 +117,7 @@ export async function extractSkillsFromToolRecords(
  * 返回匹配度最高的技能列表
  */
 export async function matchSkills(userMessage: string, limit = 3): Promise<Skill[]> {
-  const bridge = (window as any).metonaDesktop;
+  const bridge = window.metonaDesktop;
   if (!bridge?.db?.getAllSkills) return [];
 
   try {
@@ -284,7 +284,7 @@ export async function listSkills(): Promise<Array<{
   success_rate: string;
   chain_preview: string;
 }>> {
-  const bridge = (window as any).metonaDesktop;
+  const bridge = window.metonaDesktop;
   if (!bridge?.db?.getAllSkills) return [];
   const allSkills: Skill[] = await bridge.db.getAllSkills();
   return allSkills.map(skill => {
@@ -311,7 +311,7 @@ export async function viewSkill(skillName: string): Promise<{
   skill?: Skill & { chain: ToolChainStep[]; success_rate: string };
   error?: string;
 }> {
-  const bridge = (window as any).metonaDesktop;
+  const bridge = window.metonaDesktop;
   if (!bridge?.db?.getAllSkills) return { success: false, error: '数据库不可用' };
   const allSkills: Skill[] = await bridge.db.getAllSkills();
   const skill = allSkills.find(s =>