refactor(config): retire RuntimeSettingsCompat host usage

app/monitor/dispatcher.py

@@ -39,9 +39,9 @@ class TransferDispatcher:
         :param cache: 去重缓存，默认使用 10 秒 TTL 缓存
         """
         self.all_exts = all_exts if all_exts is not None else (
-            get_runtime_setting("RMT_MEDIAEXT")
-            + get_runtime_setting("RMT_SUBEXT")
-            + get_runtime_setting("RMT_AUDIOEXT")
+            get_runtime_setting('RMT_MEDIAEXT')
+            + get_runtime_setting('RMT_SUBEXT')
+            + get_runtime_setting('RMT_AUDIOEXT')
         )
         self._cache = cache if cache is not None else TTLCache(region="monitor", maxsize=1024, ttl=10)
         self._lock = Lock()
@@ -79,7 +79,7 @@ class TransferDispatcher:
         """
         判断监控事件路径是否需要进入整理链。
         """
-        if self._has_suffix_in(file_path, get_runtime_setting("DOWNLOAD_TMPEXT")):
+        if self._has_suffix_in(file_path, get_runtime_setting('DOWNLOAD_TMPEXT')):
             return False
         return self._has_suffix_in(file_path, self.all_exts)
 

app/monitor/monitor.py

@@ -235,7 +235,7 @@ class Monitor(ConfigReloadMixin, metaclass=SingletonClass):
         # 启动定时服务进程
         if not self.__accepting_work():
             return False
-        self._scheduler = BackgroundScheduler(timezone=get_runtime_setting("TZ"))
+        self._scheduler = BackgroundScheduler(timezone=get_runtime_setting('TZ'))
 
         mon_storages: Dict[str, List[Path]] = {}
         # 本地监控启动结果计数，用于输出真实的启动总结
@@ -400,7 +400,7 @@ class Monitor(ConfigReloadMixin, metaclass=SingletonClass):
             # 网络/FUSE 挂载轮询降频，减少监控自身对挂载后端的持续 stat 压力
             poll_delay_ms = None
             if use_polling and SystemUtils.is_network_filesystem(mon_path):
-                poll_delay_ms = (get_runtime_setting("MONITOR_POLL_DELAY_NETWORK")
+                poll_delay_ms = (get_runtime_setting('MONITOR_POLL_DELAY_NETWORK')
                                  or LocalDirectoryWatcher.POLL_DELAY_NETWORK_MS)
                 logger.info(f"检测到网络文件系统，轮询扫描间隔调整为 {poll_delay_ms}ms: {mon_path}")
 

app/monitor/snapshot.py

@@ -19,7 +19,7 @@ class SnapshotStore:
         :param cache: 快照文件缓存，默认使用 CACHE_PATH/snapshots
         """
         self._cache = cache if cache is not None else FileCache(
-            base=get_runtime_setting("CACHE_PATH") / "snapshots"
+            base=get_runtime_setting('CACHE_PATH') / "snapshots"
         )
 
     def save(self, storage: str, snapshot: Dict, file_count: int = 0,

app/monitor/syslimits.py

@@ -123,7 +123,7 @@ def decide_monitor_mode(directory: Path,
 
     # 检查网络文件系统
     if SystemUtils.is_network_filesystem(directory):
-        if not get_runtime_setting("MONITOR_NETWORK_FAST_MODE"):
+        if not get_runtime_setting('MONITOR_NETWORK_FAST_MODE'):
             return True, "检测到网络文件系统，建议使用兼容模式", None, None
         # 用户已确认该挂载支持 inotify，继续走快速模式的系统限制检查
         logger.info(f"检测到网络文件系统，但已配置允许快速模式: {directory}")

app/monitor/watcher.py

@@ -286,7 +286,7 @@ class LocalDirectoryWatcher:
         :return: 重扫轮次延迟秒数元组
         """
         return self._parse_rescan_delays(
-            get_runtime_setting("MONITOR_RESCAN_DELAYS")
+            get_runtime_setting('MONITOR_RESCAN_DELAYS')
         )
 
     @classmethod