feat: remote control 支持 auto bind 功能 (#300)

* feat: acp-link 支持 --group 参数指定 channel group

- 添加 --group CLI flag，校验格式 [a-zA-Z0-9_-]+
- 支持 ACP_RCS_GROUP 环境变量 fallback
- 传递 channelGroupId 到 RcsUpstreamClient
- 更新 README 文档说明 --group 和相关环境变量

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: RCS 后端 session 复用与 group 绑定

- storeFindEnvironmentByMachineName 匹配 offline 状态，防止重连创建重复 session
- registerEnvironment 复用已有 session 而非每次新建
- EnvironmentResponse 返回 channel_group_id 字段
- 注册时将 session 绑定到 group ID，支持 web UI 按 group 查询
- apiKeyAuth 不再设置 uuid，由 uuidAuth 统一处理

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: Web UI Token Manager — 多 token 切换与 session 隔离

- 新增 useTokens hook 管理 localStorage token CRUD
- 新增 TokenManagerDialog 弹窗组件（添加/编辑/删除/切换 token）
- api client 支持Bearer token 认证，UUID 跟随 token 变化
- Navbar 添加 token 切换按钮
- 切换 token 时自动 reload，实现 session 数据隔离

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: 修复 useTokens useState 初始化函数签名错误

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

packages/acp-link/src/cli/command.ts

@@ -40,6 +40,17 @@ export const command = buildCommand({
         brief: "Enable HTTPS with auto-generated self-signed certificate",
         default: false,
       },
+      group: {
+        kind: "parsed",
+        parse: (value: string) => {
+          if (!/^[a-zA-Z0-9_-]+$/.test(value)) {
+            throw new Error(`Invalid group "${value}": only letters, digits, hyphens, and underscores are allowed`);
+          }
+          return value;
+        },
+        brief: "Channel group ID for RCS registration (env: ACP_RCS_GROUP)",
+        optional: true,
+      },
     },
     positional: {
       kind: "array",
@@ -53,7 +64,7 @@ export const command = buildCommand({
   },
   func: async function (
     this: LocalContext,
-    flags: { port: number; host: string; debug: boolean; "no-auth": boolean; https: boolean },
+    flags: { port: number; host: string; debug: boolean; "no-auth": boolean; https: boolean; group: string | undefined },
     ...args: readonly string[]
   ) {
     const port = flags.port;
@@ -61,6 +72,7 @@ export const command = buildCommand({
     const debug = flags.debug;
     const noAuth = flags["no-auth"];
     const https = flags.https;
+    const group = flags.group;
     const [command, ...agentArgs] = args;
     const cwd = process.cwd();
 
@@ -85,6 +97,6 @@ export const command = buildCommand({
 
     // Import and run the server
     const { startServer } = await import("../server.js");
-    await startServer({ port, host, command: command!, args: [...agentArgs], cwd, debug, token, https });
+    await startServer({ port, host, command: command!, args: [...agentArgs], cwd, debug, token, https, group });
   },
 });