fix: 超时设置0值(禁用)无法保存的bug

- 保存值改用-1表示默认, 0表示禁用, 正数表示自定义秒数
- 修复parseSec区分空字符串和0值
- loadTimeoutSettings/main.ts初始化同步更新判断逻辑
- 补全types.d.ts中setTimeouts类型声明

src/renderer/components/settings-modal.ts

@@ -73,30 +73,33 @@ export function initSettingsModal(): void {
     const db = state.get<ChatDB | null>(KEYS.DB);
     const bridge = window.metonaDesktop;
 
+    // 辅助：解析输入值，空→-1(默认)，数字→该值(含0=禁用)
+    const parseSec = (val: string): number => (val !== '' ? parseInt(val) : -1);
+
     // HTTP 超时（秒→毫秒）
-    const httpVal = inputHttpTimeout.value.trim();
+    const httpSec = parseSec(inputHttpTimeout.value.trim());
-    const httpSec = httpVal ? parseInt(httpVal) : 0;
+    const httpMs = httpSec >= 0 ? httpSec * 1000 : 30_000;
-    if (db) await db.saveSetting('httpTimeout', httpSec > 0 ? httpSec : 0);
+    if (db) await db.saveSetting('httpTimeout', httpSec);
     if (bridge?.tool?.setTimeouts) {
-      await bridge.tool.setTimeouts({ http: httpSec > 0 ? httpSec * 1000 : 30_000 });
+      await bridge.tool.setTimeouts({ http: httpMs });
     }
-    logInfo('HTTP 超时', httpSec > 0 ? `${httpSec}s` : '默认(30s)');
+    logInfo('HTTP 超时', httpSec >= 0 ? (httpSec === 0 ? '已禁用' : `${httpSec}s`) : '默认(30s)');
 
     // 流式超时（秒→毫秒）
-    const streamVal = inputStreamTimeout.value.trim();
+    const streamSec = parseSec(inputStreamTimeout.value.trim());
-    const streamSec = streamVal ? parseInt(streamVal) : 0;
+    const streamMs = streamSec >= 0 ? streamSec * 1000 : 300_000;
-    state.set('streamTimeout', streamSec > 0 ? streamSec * 1000 : 300_000);
+    state.set('streamTimeout', streamMs);
-    if (db) await db.saveSetting('streamTimeout', streamSec > 0 ? streamSec : 0);
+    if (db) await db.saveSetting('streamTimeout', streamSec);
-    logInfo('流式超时', streamSec > 0 ? `${streamSec}s` : '默认(300s)');
+    logInfo('流式超时', streamSec >= 0 ? (streamSec === 0 ? '已禁用' : `${streamSec}s`) : '默认(300s)');
 
     // MCP 超时（秒→毫秒）
-    const mcpVal = inputMCPTimeout.value.trim();
+    const mcpSec = parseSec(inputMCPTimeout.value.trim());
-    const mcpSec = mcpVal ? parseInt(mcpVal) : 0;
+    const mcpMs = mcpSec >= 0 ? mcpSec * 1000 : 60_000;
-    if (db) await db.saveSetting('mcpTimeout', mcpSec > 0 ? mcpSec : 0);
+    if (db) await db.saveSetting('mcpTimeout', mcpSec);
     if (bridge?.tool?.setTimeouts) {
-      await bridge.tool.setTimeouts({ mcp: mcpSec > 0 ? mcpSec * 1000 : 60_000 });
+      await bridge.tool.setTimeouts({ mcp: mcpMs });
     }
-    logInfo('MCP 超时', mcpSec > 0 ? `${mcpSec}s` : '默认(60s)');
+    logInfo('MCP 超时', mcpSec >= 0 ? (mcpSec === 0 ? '已禁用' : `${mcpSec}s`) : '默认(60s)');
   };
 
   const saveHttpTimeout = debounce(applyTimeouts, 500);
@@ -309,22 +312,22 @@ export function closeSettingsModal(): void {
   settingsModalEl.style.display = 'none';
 }
 
-/** 加载已保存的超时设置到输入框 */
+/** 加载已保存的超时设置到输入框：-1=默认(显示空), 0=禁用, 正数=自定义 */
 async function loadTimeoutSettings(): Promise<void> {
   const db = state.get<ChatDB | null>(KEYS.DB);
   if (!db) return;
 
-  const httpTimeout = await db.getSetting<number>('httpTimeout', 0);
+  const httpTimeout = await db.getSetting<number>('httpTimeout', -1);
-  const streamTimeout = await db.getSetting<number>('streamTimeout', 0);
+  const streamTimeout = await db.getSetting<number>('streamTimeout', -1);
-  const mcpTimeout = await db.getSetting<number>('mcpTimeout', 0);
+  const mcpTimeout = await db.getSetting<number>('mcpTimeout', -1);
 
   const inputHttp = document.querySelector('#inputHttpTimeout') as HTMLInputElement;
   const inputStream = document.querySelector('#inputStreamTimeout') as HTMLInputElement;
   const inputMCP = document.querySelector('#inputMCPTimeout') as HTMLInputElement;
 
-  if (inputHttp) inputHttp.value = httpTimeout > 0 ? String(httpTimeout) : '';
+  if (inputHttp) inputHttp.value = httpTimeout >= 0 ? String(httpTimeout) : '';
-  if (inputStream) inputStream.value = streamTimeout > 0 ? String(streamTimeout) : '';
+  if (inputStream) inputStream.value = streamTimeout >= 0 ? String(streamTimeout) : '';
-  if (inputMCP) inputMCP.value = mcpTimeout > 0 ? String(mcpTimeout) : '';
+  if (inputMCP) inputMCP.value = mcpTimeout >= 0 ? String(mcpTimeout) : '';
 }
 
 async function exportAllSessions(): Promise<void> {

src/renderer/main.ts

@@ -362,30 +362,28 @@ async function init(): Promise<void> {
     state.set('maxTurns', maxTurns);
     (document.querySelector('#inputMaxTurns') as HTMLInputElement).value = String(maxTurns);
 
-    // ── v5.2 超时设置 ──
+    // ── v5.2 超时设置：-1=默认, 0=禁用, 正数=自定义 ──
-    const httpTimeout = await db.getSetting<number>('httpTimeout', 0);
+    const httpTimeout = await db.getSetting<number>('httpTimeout', -1);
-    const streamTimeout = await db.getSetting<number>('streamTimeout', 0);
+    const streamTimeout = await db.getSetting<number>('streamTimeout', -1);
-    const mcpTimeout = await db.getSetting<number>('mcpTimeout', 0);
+    const mcpTimeout = await db.getSetting<number>('mcpTimeout', -1);
 
-    // 应用流式超时到 state（agent-engine 会读取）
+    // 应用流式超时到 state（agent-engine 读取，0=禁用）
-    state.set('streamTimeout', streamTimeout > 0 ? streamTimeout * 1000 : 300_000);
+    state.set('streamTimeout', streamTimeout >= 0 ? streamTimeout * 1000 : 300_000);
 
     // 应用 HTTP 和 MCP 超时到主进程
     const bridge = window.metonaDesktop;
     if (bridge?.tool?.setTimeouts) {
       await bridge.tool.setTimeouts({
-        http: httpTimeout > 0 ? httpTimeout * 1000 : 30_000,
+        http: httpTimeout >= 0 ? httpTimeout * 1000 : 30_000,
-        mcp: mcpTimeout > 0 ? mcpTimeout * 1000 : 60_000,
+        mcp: mcpTimeout >= 0 ? mcpTimeout * 1000 : 60_000,
       });
     }
 
-    // 恢复输入框显示值
+    // 恢复输入框显示（-1显示空, 0显示0, 正数显示数字）
-    if (document.querySelector('#inputHttpTimeout')) {
+    (document.querySelector('#inputHttpTimeout') as HTMLInputElement).value = httpTimeout >= 0 ? String(httpTimeout) : '';
-      (document.querySelector('#inputHttpTimeout') as HTMLInputElement).value = httpTimeout > 0 ? String(httpTimeout) : '';
+    (document.querySelector('#inputStreamTimeout') as HTMLInputElement).value = streamTimeout >= 0 ? String(streamTimeout) : '';
-      (document.querySelector('#inputStreamTimeout') as HTMLInputElement).value = streamTimeout > 0 ? String(streamTimeout) : '';
+    (document.querySelector('#inputMCPTimeout') as HTMLInputElement).value = mcpTimeout >= 0 ? String(mcpTimeout) : '';
-      (document.querySelector('#inputMCPTimeout') as HTMLInputElement).value = mcpTimeout > 0 ? String(mcpTimeout) : '';
+    logInit(`超时设置: HTTP=${httpTimeout>=0?httpTimeout:30}s 流式=${streamTimeout>=0?streamTimeout:300}s MCP=${mcpTimeout>=0?mcpTimeout:60}s`);
-    }
-    logInit(`超时设置: HTTP=${httpTimeout||30}s 流式=${streamTimeout||300}s MCP=${mcpTimeout||60}s`);
 
     // ── Tool Calling 设置 ──
     const toolCallingEnabled = await db.getSetting('toolCallingEnabled', true);

src/renderer/types.d.ts

@@ -220,6 +220,7 @@ export interface MetonaDesktopAPI {
     execute: (toolName: string, args: Record<string, unknown>) => Promise<ToolResult>;
     getConfig: () => Promise<{ allowedDirs: string[]; blockedDirs: string[] }>;
     setAllowedDirs: (dirs: string[]) => Promise<void>;
+    setTimeouts: (timeouts: { http?: number; mcp?: number }) => Promise<{ success: boolean }>;
   };
   notify: (title: string, body: string) => void;
   window: {