feat: enhance session ID calculation and plugin management

- Updated `calculate_session_id` method in `SessionUtils` to include optional `account_id` and `scope` parameters for more granular session ID generation.
- Added new environment variables in `plugin_runtime` for external plugin dependencies and global configuration snapshots.
- Introduced methods in `RuntimeComponentManagerProtocol` for loading and reloading plugins globally, accommodating external dependencies.
- Enhanced `PluginRunnerSupervisor` to manage external available plugin IDs during plugin reloads.
- Implemented dependency extraction and management in `PluginRuntimeManager` to handle cross-supervisor dependencies.
- Added tests for session ID calculation and message registration in `ChatManager` to ensure correct behavior with new parameters.

src/plugin_runtime/__init__.py

@@ -16,3 +16,9 @@ ENV_PLUGIN_DIRS = "MAIBOT_PLUGIN_DIRS"
 
 ENV_HOST_VERSION = "MAIBOT_HOST_VERSION"
 """Runner 读取的 Host 应用版本号，用于 manifest 兼容性校验"""
+
+ENV_EXTERNAL_PLUGIN_IDS = "MAIBOT_EXTERNAL_PLUGIN_IDS"
+"""Runner 启动时可视为已满足的外部插件依赖列表（JSON 数组）"""
+
+ENV_GLOBAL_CONFIG_SNAPSHOT = "MAIBOT_GLOBAL_CONFIG_SNAPSHOT"
+"""Runner 启动时注入的全局配置快照（JSON 对象）"""