fix(stealth): 修复 headed 模式下 stealth 失效并统一策略

- 修复 launch 协议未透传 stealth 导致 --headed 下补丁失效的问题\n- 在 BrowserManager 引入 StealthPolicy，统一 local/CDP/provider 能力决策\n- 增加 launch 返回 stealth 状态并在 --debug 输出连接类型与能力\n- 补充 local/CDP 回归测试与 bot.sannysoft.com 自动检查脚本\n- 同步 README、CLI help、技能文档与 CDP 文档中的 stealth 能力矩阵

cli/src/connection.rs

@@ -220,6 +220,8 @@ pub fn ensure_daemon(
     provider: Option<&str>,
     device: Option<&str>,
     session_name: Option<&str>,
+    stealth: bool,
+    debug: bool,
 ) -> Result<DaemonResult, String> {
     // Check if daemon is running AND responsive
     if is_daemon_running(session) && daemon_ready(session) {
@@ -364,6 +366,11 @@ pub fn ensure_daemon(
             cmd.env("AGENT_BROWSER_SESSION_NAME", sn);
         }
 
+        cmd.env("AGENT_BROWSER_STEALTH", if stealth { "1" } else { "0" });
+        if debug {
+            cmd.env("AGENT_BROWSER_DEBUG", "1");
+        }
+
         // Create new process group and session to fully detach
         unsafe {
             cmd.pre_exec(|| {
@@ -375,8 +382,8 @@ pub fn ensure_daemon(
 
         cmd.stdin(Stdio::null())
             .stdout(Stdio::null())
-            .stderr(Stdio::null())
-            .spawn()
+            .stderr(Stdio::null());
+        cmd.spawn()
             .map_err(|e| format!("Failed to start daemon: {}", e))?;
     }
 
@@ -447,6 +454,11 @@ pub fn ensure_daemon(
             cmd.env("AGENT_BROWSER_SESSION_NAME", sn);
         }
 
+        cmd.env("AGENT_BROWSER_STEALTH", if stealth { "1" } else { "0" });
+        if debug {
+            cmd.env("AGENT_BROWSER_DEBUG", "1");
+        }
+
         // CREATE_NEW_PROCESS_GROUP | DETACHED_PROCESS
         const CREATE_NEW_PROCESS_GROUP: u32 = 0x00000200;
         const DETACHED_PROCESS: u32 = 0x00000008;
@@ -454,8 +466,8 @@ pub fn ensure_daemon(
         cmd.creation_flags(CREATE_NEW_PROCESS_GROUP | DETACHED_PROCESS)
             .stdin(Stdio::null())
             .stdout(Stdio::null())
-            .stderr(Stdio::null())
-            .spawn()
+            .stderr(Stdio::null());
+        cmd.spawn()
             .map_err(|e| format!("Failed to start daemon: {}", e))?;
     }