refactor(home): 将首页改造成opencode服务入口页面

- 移除ChatGPT风格对话界面相关代码
- 添加在首页自动启动/停止opencode serve的IPC调用
- 首页使用webview加载opencode服务器界面

electron/main.ts

@@ -6,6 +6,7 @@ import log from 'electron-log';
 import { generatePdf } from './services/pdfGenerator';
 import { selectHtmlFile } from './services/htmlImport';
 import { electronState } from './state';
+import { spawn, ChildProcess } from 'child_process';
 
 log.initialize();
 
@@ -24,6 +25,9 @@ if (!fs.existsSync(process.env.NOTEBOOK_ROOT)) {
 
 electronState.setDevelopment(!app.isPackaged);
 
+let opencodeProcess: ChildProcess | null = null;
+const OPENCODE_PORT = 4096;
+
 let lastClipboardText = '';
 
 function startClipboardWatcher() {
@@ -358,6 +362,62 @@ ipcMain.handle('remote-download-file', async (_event, id: string, serverHost: st
   }
 });
 
+ipcMain.handle('opencode-start-server', async () => {
+  if (opencodeProcess) {
+    log.info('Opencode server already running');
+    return { success: true, port: OPENCODE_PORT };
+  }
+
+  try {
+    log.info('Starting opencode server...');
+    opencodeProcess = spawn('opencode', ['serve'], {
+      stdio: 'pipe',
+      shell: true,
+      detached: false,
+    });
+
+    opencodeProcess.stdout?.on('data', (data) => {
+      log.info(`[opencode] ${data}`);
+    });
+
+    opencodeProcess.stderr?.on('data', (data) => {
+      log.error(`[opencode error] ${data}`);
+    });
+
+    opencodeProcess.on('error', (err) => {
+      log.error('Opencode process error:', err);
+      opencodeProcess = null;
+    });
+
+    opencodeProcess.on('exit', (code) => {
+      log.info(`Opencode process exited with code ${code}`);
+      opencodeProcess = null;
+    });
+
+    return { success: true, port: OPENCODE_PORT };
+  } catch (error: any) {
+    log.error('Failed to start opencode server:', error);
+    return { success: false, error: error.message };
+  }
+});
+
+ipcMain.handle('opencode-stop-server', async () => {
+  if (!opencodeProcess) {
+    log.info('Opencode server not running');
+    return { success: true };
+  }
+
+  try {
+    log.info('Stopping opencode server...');
+    opencodeProcess.kill('SIGTERM');
+    opencodeProcess = null;
+    return { success: true };
+  } catch (error: any) {
+    log.error('Failed to stop opencode server:', error);
+    return { success: false, error: error.message };
+  }
+});
+
 async function startServer() {
   if (electronState.isDevelopment()) {
     log.info('In dev mode, assuming external servers are running.');