feat(opencode): 改进 XCOpenCodeWeb 服务管理和健康检查

src/types/electron.d.ts

@@ -44,6 +44,7 @@ export interface ElectronAPI {
   xcOpenCodeWebStop: () => Promise<{ success: boolean; error?: string }>
   xcOpenCodeWebGetStatus: () => Promise<{ running: boolean; port: number }>
   xcOpenCodeWebGetPort: () => Promise<{ port: number }>
+  xcOpenCodeWebCheckReady: () => Promise<{ ready: boolean }>
 }
 
 declare global {