fix(remote): 移除默认端口配置，使用 opencode 默认端口 4096

remote/src/services/opencode/OpenCodeService.js

@@ -7,7 +7,7 @@ class OpenCodeService {
   constructor(options = {}) {
     this.process = null;
     this.isRunning = false;
-    this.port = options.port || 3002;
+    this.port = options.port;
     this.enabled = options.enabled !== false;
     
     try {
@@ -42,17 +42,18 @@ class OpenCodeService {
     }
 
     try {
-      logger.info('Starting OpenCode service', { port: this.port, opencodePath: this.opencodePath });
+      logger.info('Starting OpenCode service', { port: this.port || 'default', opencodePath: this.opencodePath });
 
       const env = {
         ...process.env,
         OPENCODE_SERVER_PASSWORD: password
       };
 
+      const portArg = this.port ? ` --port ${this.port}` : '';
       this.process = spawn('powershell.exe', [
         '-NoProfile',
         '-Command',
-        `& '${this.opencodePath}' serve --port ${this.port}`
+        `& '${this.opencodePath}' serve${portArg}`
       ], {
         stdio: ['ignore', 'pipe', 'pipe'],
         env,
@@ -113,7 +114,7 @@ class OpenCodeService {
   getStatus() {
     return {
       running: this.isRunning,
-      port: this.port
+      port: this.port || null
     };
   }
 }