refactor: SDK 包结构——transports/firmware 分包、bridge_server 入包+ppclock-bridge 入口、fw 工具入 SDK 域，151 测试全绿

src/ppclock/cli.py

@@ -42,13 +42,13 @@ def _emit(args, cmd, data=None, error=None):
 
 def _make_transport(args):
     """工厂函数——测试用 monkeypatch 替换为 FakeTransport。"""
-    from .bridge import BridgeTransport, parse_via
+    from .transports.bridge import BridgeTransport, parse_via
     via = parse_via(getattr(args, "via", None))
     if via:
         host, port = via
         return BridgeTransport(address=args.mac, timeout=args.timeout,
                                host=host, port=port)
-    from .transport import BLETransport
+    from .transports.local import BLETransport
     return BLETransport(address=args.mac, timeout=args.timeout)
 
 
@@ -316,12 +316,12 @@ async def _run_batch(args) -> list:
 
 async def _dispatch(args) -> dict | list | None:
     if args.cmd == "scan":
-        from .bridge import parse_via
+        from .transports.bridge import parse_via
         via = parse_via(getattr(args, "via", None))
         if via:
-            from .bridge import scan as bridge_scan
+            from .transports.bridge import scan as bridge_scan
             return {"devices": await bridge_scan(via[0], via[1], timeout=args.timeout)}
-        from .transport import scan
+        from .transports.local import scan
         return {"devices": await scan(timeout=args.timeout)}
     if args.cmd == "batch":
         return {"results": await _run_batch(args)}
@@ -338,7 +338,7 @@ def main(argv=None) -> int:
         _emit(args, args.cmd, error=str(e))
         return EXIT_USAGE
     except Exception as e:
-        from .transport import TransportError
+        from .transports.base import TransportError
         code = EXIT_TRANSPORT if isinstance(e, TransportError) else EXIT_ERROR
         _emit(args, args.cmd, error=f"{type(e).__name__}: {e}")
         return code