refactor: update message gateway handling and remove adapter references

- Changed the message sending method to return DeliveryBatch instead of DeliveryReceipt in integration.py.
- Removed AdapterDeclarationPayload and related references from envelope.py, replacing them with MessageGatewayStateUpdatePayload and MessageGatewayStateUpdateResultPayload.
- Updated runner_main.py to remove adapter-related logic and methods, focusing on message gateway functionality.
- Added tests for message gateway runtime state synchronization and action bridge functionality in test files.

pytests/test_plugin_runtime_action_bridge.py

@@ -0,0 +1,138 @@
+from types import SimpleNamespace
+from typing import Any
+
+import pytest
+
+from src.core.component_registry import component_registry as core_component_registry
+from src.plugin_runtime.host.supervisor import PluginSupervisor
+from src.plugin_runtime.protocol.envelope import ComponentDeclaration, RegisterPluginPayload
+
+
+def _build_action_payload(plugin_id: str, action_name: str) -> RegisterPluginPayload:
+    """构造用于测试的 runtime Action 注册载荷。
+
+    Args:
+        plugin_id: 插件 ID。
+        action_name: Action 名称。
+
+    Returns:
+        RegisterPluginPayload: 测试用注册载荷。
+    """
+    return RegisterPluginPayload(
+        plugin_id=plugin_id,
+        plugin_version="1.0.0",
+        components=[
+            ComponentDeclaration(
+                name=action_name,
+                component_type="ACTION",
+                plugin_id=plugin_id,
+                metadata={
+                    "description": "发送一个测试回复",
+                    "enabled": True,
+                    "activation_type": "keyword",
+                    "activation_probability": 0.25,
+                    "activation_keywords": ["测试", "hello"],
+                    "action_parameters": {"target": "目标对象"},
+                    "action_require": ["需要发送回复时使用"],
+                    "associated_types": ["text"],
+                    "parallel_action": True,
+                },
+            )
+        ],
+    )
+
+
+@pytest.mark.asyncio
+async def test_runtime_actions_are_mirrored_into_core_registry_and_invoked(monkeypatch: pytest.MonkeyPatch) -> None:
+    """运行时 Action 应镜像到旧核心注册表，并可由旧 Planner 执行。"""
+    plugin_id = "runtime_action_bridge_plugin"
+    action_name = "runtime_action_bridge_test"
+    payload = _build_action_payload(plugin_id=plugin_id, action_name=action_name)
+    supervisor = PluginSupervisor(plugin_dirs=[])
+    captured: dict[str, Any] = {}
+
+    core_component_registry.remove_action(action_name)
+
+    async def fake_invoke_plugin(
+        method: str,
+        plugin_id: str,
+        component_name: str,
+        args: dict[str, Any] | None = None,
+        timeout_ms: int = 30000,
+    ) -> Any:
+        """模拟 plugin runtime Action 调用。
+
+        Args:
+            method: RPC 方法名。
+            plugin_id: 插件 ID。
+            component_name: 组件名称。
+            args: 调用参数。
+            timeout_ms: RPC 超时时间。
+
+        Returns:
+            Any: 伪造的 RPC 响应对象。
+        """
+        captured["method"] = method
+        captured["plugin_id"] = plugin_id
+        captured["component_name"] = component_name
+        captured["args"] = args or {}
+        captured["timeout_ms"] = timeout_ms
+        return SimpleNamespace(payload={"success": True, "result": (True, "runtime action executed")})
+
+    monkeypatch.setattr(supervisor, "invoke_plugin", fake_invoke_plugin)
+
+    try:
+        supervisor._mirror_runtime_actions_to_core_registry(payload)
+
+        action_info = core_component_registry.get_action_info(action_name)
+        assert action_info is not None
+        assert action_info.plugin_name == plugin_id
+        assert action_info.description == "发送一个测试回复"
+        assert action_info.activation_keywords == ["测试", "hello"]
+        assert action_info.random_activation_probability == 0.25
+        assert action_info.parallel_action is True
+
+        executor = core_component_registry.get_action_executor(action_name)
+        assert executor is not None
+
+        success, reason = await executor(
+            action_data={"target": "MaiBot"},
+            action_reasoning="当前适合使用这个动作",
+            cycle_timers={"planner": 0.1},
+            thinking_id="tid-1",
+            chat_stream=SimpleNamespace(session_id="stream-1"),
+            log_prefix="[test]",
+            shutting_down=False,
+            plugin_config={"enabled": True},
+        )
+
+        assert success is True
+        assert reason == "runtime action executed"
+        assert captured["method"] == "plugin.invoke_action"
+        assert captured["plugin_id"] == plugin_id
+        assert captured["component_name"] == action_name
+        assert captured["args"]["stream_id"] == "stream-1"
+        assert captured["args"]["chat_id"] == "stream-1"
+        assert captured["args"]["reasoning"] == "当前适合使用这个动作"
+        assert captured["args"]["target"] == "MaiBot"
+        assert captured["args"]["action_data"] == {"target": "MaiBot"}
+    finally:
+        supervisor._remove_core_action_mirrors(plugin_id)
+        core_component_registry.remove_action(action_name)
+
+
+def test_clear_runner_state_removes_mirrored_runtime_actions() -> None:
+    """清理 Runner 状态时应同步移除旧核心注册表中的镜像 Action。"""
+    plugin_id = "runtime_action_bridge_cleanup_plugin"
+    action_name = "runtime_action_bridge_cleanup_test"
+    payload = _build_action_payload(plugin_id=plugin_id, action_name=action_name)
+    supervisor = PluginSupervisor(plugin_dirs=[])
+
+    core_component_registry.remove_action(action_name)
+
+    supervisor._mirror_runtime_actions_to_core_registry(payload)
+    assert core_component_registry.get_action_info(action_name) is not None
+
+    supervisor._clear_runner_state()
+
+    assert core_component_registry.get_action_info(action_name) is None