- Added `inactive_plugins` field to `RunnerReadyPayload` and `ReloadPluginResultPayload` to track plugins that are not activated due to being disabled or unmet dependencies.
- Introduced `InspectPluginConfigPayload` and `InspectPluginConfigResultPayload` for inspecting plugin configuration metadata.
- Implemented `PluginActivationStatus` enum to better represent plugin activation states.
- Updated `_activate_plugin` method to return activation status and handle inactive plugins accordingly.
- Added hooks for send service to allow modification of messages before and after sending.
- Created new runtime routes for listing hook specifications in the WebUI.
- Refactored plugin configuration handling to utilize runtime inspection for better accuracy and flexibility.
- Enhanced error handling and logging for plugin configuration operations.
- Introduced a new method `validate_plugin_config` in `PluginRuntimeManager` to validate plugin configurations at runtime.
- Implemented the `_normalize_plugin_config` method in `PluginRunner` to normalize and persist plugin configurations.
- Enhanced the `PluginRunner` to handle configuration validation requests and return normalized configurations.
- Updated the WebUI routes to utilize runtime validation for plugin configurations, ensuring that configurations are validated and normalized before saving.
- Added tests for runtime configuration validation and normalization processes, including handling of invalid configurations.
