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.

src/plugin_runtime/runner/runner_main.py

@@ -25,7 +25,6 @@ import tomllib
 from src.common.logger import get_console_handler, get_logger, initialize_logging
 from src.plugin_runtime import ENV_HOST_VERSION, ENV_IPC_ADDRESS, ENV_PLUGIN_DIRS, ENV_SESSION_TOKEN
 from src.plugin_runtime.protocol.envelope import (
-    AdapterDeclarationPayload,
     BootstrapPluginPayload,
     ComponentDeclaration,
     Envelope,
@@ -219,7 +218,7 @@ class PluginRunner:
         """为插件实例创建并注入 PluginContext。
 
         对新版 MaiBotPlugin（具有 _set_context 方法）：创建 PluginContext 并注入。
-        对旧版 LegacyPluginAdapter（具有 _set_context 方法，由适配器代理）：同上。
+        对旧版 LegacyPluginAdapter（具有 _set_context 方法，由兼容代理封装）：同上。
         """
         if not hasattr(instance, "_set_context"):
             return
@@ -293,7 +292,7 @@ class PluginRunner:
         self._rpc_client.register_method("plugin.invoke_command", self._handle_invoke)
         self._rpc_client.register_method("plugin.invoke_action", self._handle_invoke)
         self._rpc_client.register_method("plugin.invoke_tool", self._handle_invoke)
-        self._rpc_client.register_method("plugin.invoke_adapter", self._handle_invoke)
+        self._rpc_client.register_method("plugin.invoke_message_gateway", self._handle_invoke)
         self._rpc_client.register_method("plugin.emit_event", self._handle_event_invoke)
         self._rpc_client.register_method("plugin.invoke_hook", self._handle_hook_invoke)
         self._rpc_client.register_method("plugin.invoke_workflow_step", self._handle_workflow_step)
@@ -331,29 +330,6 @@ class PluginRunner:
         """撤销 bootstrap 期间为插件签发的能力令牌。"""
         await self._bootstrap_plugin(meta, capabilities_required=[])
 
-    def _collect_adapter_declaration(self, meta: PluginMeta) -> Optional[AdapterDeclarationPayload]:
-        """从插件实例中提取适配器声明。
-
-        Args:
-            meta: 待提取声明的插件元数据。
-
-        Returns:
-            Optional[AdapterDeclarationPayload]: 若插件声明了适配器角色，则返回
-            经过校验的适配器声明；否则返回 ``None``。
-
-        Raises:
-            ValueError: 插件导出的适配器声明结构非法时抛出。
-        """
-        instance = meta.instance
-        if not hasattr(instance, "get_adapter_info"):
-            return None
-
-        adapter_info = instance.get_adapter_info()
-        if adapter_info is None:
-            return None
-
-        return AdapterDeclarationPayload.model_validate(adapter_info)
-
     async def _register_plugin(self, meta: PluginMeta) -> bool:
         """向 Host 注册单个插件。
 
@@ -379,17 +355,10 @@ class PluginRunner:
                 for comp_info in instance.get_components()
             )
 
-        try:
-            adapter = self._collect_adapter_declaration(meta)
-        except Exception as exc:
-            logger.error(f"插件 {meta.plugin_id} 适配器声明非法: {exc}", exc_info=True)
-            return False
-
         reg_payload = RegisterPluginPayload(
             plugin_id=meta.plugin_id,
             plugin_version=meta.version,
             components=components,
-            adapter=adapter,
             capabilities_required=meta.capabilities_required,
         )