feat(规则管理): 添加主题规则自动发现设备功能

实现设备自动发现规则管理系统，包含以下主要功能：
1. 新增规则管理页面和API，支持创建、编辑和删除主题匹配规则
2. 添加规则匹配引擎，支持+和#通配符匹配设备主题
3. 实现Broker设备注册表，自动发现并管理符合规则的设备
4. 扩展仪表盘显示Broker信息和活跃主题
5. 修改设备卡片和详情页以区分规则发现的设备
6. 添加相关测试用例确保功能稳定性

tests/test_broker_devices.py

@@ -0,0 +1,86 @@
+from types import SimpleNamespace
+from mqtt_home.broker_devices import BrokerDevice, BrokerDeviceRegistry
+
+
+def make_rule(id=1, topic_pattern="home/+/state", device_type="switch",
+              command_template="home/{device_id}/set", state_value_path="state",
+              is_enabled=True):
+    return SimpleNamespace(
+        id=id, topic_pattern=topic_pattern, device_type=device_type,
+        command_template=command_template, state_value_path=state_value_path,
+        is_enabled=is_enabled,
+    )
+
+
+def test_create_device_on_match():
+    registry = BrokerDeviceRegistry()
+    rule = make_rule()
+    device = registry.update_or_create("home/fire/state", '{"state":"on"}', rule)
+    assert device is not None
+    assert device.id == "broker:fire"
+    assert device.name == "fire"
+    assert device.type == "switch"
+    assert device.state == "on"
+    assert device.command_topic == "home/fire/set"
+    assert device.is_online is True
+    assert device.rule_id == 1
+
+
+def test_update_existing_device():
+    registry = BrokerDeviceRegistry()
+    rule = make_rule()
+    registry.update_or_create("home/fire/state", '{"state":"on"}', rule)
+    device = registry.update_or_create("home/fire/state", '{"state":"off"}', rule)
+    assert device.state == "off"
+    assert len(registry.get_all()) == 1
+
+
+def test_different_topics_different_devices():
+    registry = BrokerDeviceRegistry()
+    rule = make_rule()
+    registry.update_or_create("home/fire/state", '{"state":"on"}', rule)
+    registry.update_or_create("home/servo/state", '{"state":"off"}', rule)
+    assert len(registry.get_all()) == 2
+
+
+def test_no_match_returns_none():
+    registry = BrokerDeviceRegistry()
+    rule = make_rule(topic_pattern="home/+/state")
+    result = registry.update_or_create("living/light/status", '{"state":"on"}', rule)
+    assert result is None
+
+
+def test_remove_by_rule():
+    registry = BrokerDeviceRegistry()
+    rule1 = make_rule(id=1)
+    rule2 = make_rule(id=2, topic_pattern="sensor/+/data")
+    registry.update_or_create("home/fire/state", '{"state":"on"}', rule1)
+    registry.update_or_create("sensor/temp/data", '{"value":25}', rule2)
+    assert len(registry.get_all()) == 2
+    removed = registry.remove_by_rule(1)
+    assert removed == ["broker:fire"]
+    assert len(registry.get_all()) == 1
+    assert registry.get("broker:fire") is None
+
+
+def test_full_payload_as_state():
+    registry = BrokerDeviceRegistry()
+    rule = make_rule(state_value_path=None)
+    device = registry.update_or_create("home/fire/state", '{"state":"on","brightness":128}', rule)
+    assert device.state == '{"state":"on","brightness":128}'
+
+
+def test_get_device():
+    registry = BrokerDeviceRegistry()
+    rule = make_rule()
+    registry.update_or_create("home/fire/state", '{"state":"on"}', rule)
+    assert registry.get("broker:fire") is not None
+    assert registry.get("broker:nonexistent") is None
+
+
+def test_clear():
+    registry = BrokerDeviceRegistry()
+    rule = make_rule()
+    registry.update_or_create("home/fire/state", '{"state":"on"}', rule)
+    registry.clear()
+    assert len(registry.get_all()) == 0