feat: v0.10.2 - 可配置超时设置 + 默认值提升

- HTTP超时: 15s→30s(可配5s~300s), MCP超时: 30s→60s(可配10s~300s), 流式超时: 180s→300s(可配0~600s)
- 设置面板新增超时配置区域(HTTP/流式/MCP),留空使用默认值
- 主进程HTTP_TIMEOUT/MCP_TIMEOUT改为可配置变量,通过IPC setTimeouts通道接收
- 帮助面板/README/release-notes更新四引擎搜索和超时描述
- 版本号同步更新至v0.10.2(16处)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "metona-ollama-desktop",
-  "version": "0.10.1",
+  "version": "0.10.2",
   "description": "Metona Ollama - TypeScript + Electron 桌面 AI 聊天客户端",
   "main": "dist/main/main.js",
   "author": "thzxx",
@@ -48,7 +48,7 @@
       "requestedExecutionLevel": "asInvoker"
     },
     "nsis": {
-      "artifactName": "Metona Ollama Setup v0.10.1.${ext}",
+      "artifactName": "Metona Ollama Setup v0.10.2.${ext}",
       "oneClick": false,
       "allowToChangeInstallationDirectory": true,
       "createDesktopShortcut": true,