diff --git a/backup/__init__.py b/backup/__init__.py
new file mode 100644
index 0000000..778a2d4
--- /dev/null
+++ b/backup/__init__.py
@@ -0,0 +1 @@
+# 使 backup 成为显式包，便于 from backup.msg_push import ...
diff --git a/src/utils.py b/src/utils.py
index 77326dc..5857add 100644
--- a/src/utils.py
+++ b/src/utils.py
@@ -11,15 +11,16 @@ import functools
 import hashlib
 import re
 import traceback
-from typing import Any, List, Optional, Union
+from typing import Any, Dict, List, Optional, Union
 from urllib.parse import parse_qs, urlparse
 from collections import OrderedDict
 import execjs
 from .logger import logger
 import configparser
 
-OptionalStr = Optional[str]
-OptionalDict = Optional[dict]
+# Python 3.9：此处不能写 str | None（| 会在 import 时求值报错），勿改回 PEP604 写法
+OptionalStr = Union[str, None]
+OptionalDict = Union[Dict[str, Any], None]
 
 
 class Color:
diff --git a/tools/deploy_live_paramiko.py b/tools/deploy_live_paramiko.py
index 48d095a..61e1efd 100644
--- a/tools/deploy_live_paramiko.py
+++ b/tools/deploy_live_paramiko.py
@@ -24,7 +24,25 @@ REMOTE_BASE = os.environ.get("LIVE_DEPLOY_PATH", "/home/live/douyinyoutube").rst
 
 REPO_ROOT = Path(__file__).resolve().parent.parent
 
+
+def _discover_repo_files() -> list[str]:
+    """与 youtube.py 运行相关的源码，避免只同步白名单时缺模块。"""
+    extra: list[str] = []
+    backup_dir = REPO_ROOT / "backup"
+    if backup_dir.is_dir():
+        for p in sorted(backup_dir.glob("*.py")):
+            extra.append(str(p.relative_to(REPO_ROOT)).replace("\\", "/"))
+    return extra
+
+
 FILES = [
+    "src/utils.py",
+    "src/logger.py",
+    "src/spider.py",
+    "src/stream.py",
+    "src/proxy.py",
+    "src/http_clients/async_http.py",
+    "src/http_clients/sync_http.py",
     "src/android_control.py",
     "src/async_thread_loop.py",
     "src/youtube_ini_sync.py",
@@ -37,6 +55,7 @@ FILES = [
     "youtube.py",
     "tiktok.py",
     "main.py",
+    "ffmpeg_install.py",
     "scripts/hardware_probe.py",
     "config/hardware.env.example",
     "ecosystem.config.cjs",
@@ -73,6 +92,8 @@ FILES = [
     "web-console/components/console/LiveConsoleWorkspace.tsx",
 ]
 
+FILES = sorted(set(FILES + _discover_repo_files()))
+
 LOG_DIR = REPO_ROOT / ".deploy_logs"
 TAIL_LINES = 90
 
@@ -229,8 +250,26 @@ def main() -> int:
             sftp_put(sftp, lp, rp)
             _safe_print(f"已上传: {rel}")
 
+        run_logged(
+            client,
+            log_path,
+            "clear_python_caches",
+            f"rm -rf {REMOTE_BASE}/src/__pycache__ {REMOTE_BASE}/backup/__pycache__ 2>/dev/null; echo cache_cleared",
+            timeout=20,
+        )
+        run_logged(
+            client,
+            log_path,
+            "verify_utils_py_snippet",
+            f"sed -n '1,28p' {REMOTE_BASE}/src/utils.py",
+            timeout=15,
+        )
+
         py_compile = (
-            f"cd {REMOTE_BASE} && python3 -m py_compile web.py youtube.py tiktok.py "
+            f"cd {REMOTE_BASE} && python3 -m py_compile web.py youtube.py tiktok.py ffmpeg_install.py "
+            "backup/__init__.py backup/msg_push.py backup/robust_relay.py "
+            "src/utils.py src/logger.py src/spider.py src/stream.py src/proxy.py "
+            "src/http_clients/async_http.py src/http_clients/sync_http.py "
             "src/control_plane.py src/web_process_backend.py src/hub_routes.py "
             "src/async_thread_loop.py src/youtube_ini_sync.py "
             "src/live_config/__init__.py src/live_config/loader.py "