feat(bridge): BLE 桥接能力——bridge_server.py(Windows原生) + BridgeTransport + --via/PPCLOCK_VIA，149 测试全绿

tests/test_cli.py

@@ -231,3 +231,55 @@ class TestActivateAuto:
         expected = keygen_code(bytes([0x9A, 0x01, 0x99, 0x50, 0x10, 0x20]))
         assert t.rxtx_writes[1] == bytes([0xEF]) + expected
         assert out["data"]["code"] == expected.hex()
+
+
+_ORIG_MAKE = cli._make_transport
+
+
+class TestViaBridge:
+    def test_via_bridge_creates_bridge_transport(self):
+        import argparse
+        from ppclock.bridge import BridgeTransport
+        args = argparse.Namespace(mac="AA:BB", timeout=5.0, via="bridge://192.168.61.35:8971")
+        t = _ORIG_MAKE(args)
+        assert isinstance(t, BridgeTransport)
+        assert (t.host, t.port) == ("192.168.61.35", 8971)
+        assert t.address == "AA:BB"
+
+    def test_via_default_port(self):
+        import argparse
+        args = argparse.Namespace(mac=None, timeout=5.0, via="bridge://10.0.0.2")
+        t = _ORIG_MAKE(args)
+        assert t.port == 8971
+
+    def test_via_local_creates_ble(self):
+        import argparse
+        from ppclock.transport import BLETransport
+        args = argparse.Namespace(mac=None, timeout=5.0, via=None)
+        assert isinstance(_ORIG_MAKE(args), BLETransport)
+
+    def test_scan_uses_bridge(self, capsys, monkeypatch):
+        import ppclock.bridge as br
+        called = {}
+
+        async def fake_scan(host, port, timeout=5.0):
+            called["args"] = (host, port)
+            return [{"name": "NRF-BR", "address": "CC:DD", "rssi": -60}]
+        monkeypatch.setattr(br, "scan", fake_scan)
+        code, out = run_cli(capsys, ["--json", "--via", "bridge://10.0.0.9:9999", "scan"])
+        assert code == 0
+        assert called["args"] == ("10.0.0.9", 9999)
+        assert out["data"]["devices"][0]["name"] == "NRF-BR"
+
+    def test_env_var_fallback(self, capsys, monkeypatch):
+        import ppclock.bridge as br
+        called = {}
+
+        async def fake_scan(host, port, timeout=5.0):
+            called["args"] = (host, port)
+            return []
+        monkeypatch.setattr(br, "scan", fake_scan)
+        monkeypatch.setenv("PPCLOCK_VIA", "bridge://10.0.0.7")
+        code, _ = run_cli(capsys, ["--json", "scan"])
+        assert code == 0
+        assert called["args"] == ("10.0.0.7", 8971)