Merge remote-tracking branch 'origin/master' into dev/4.11.x

# Conflicts:
#	src/langbot/pkg/pipeline/preproc/preproc.py
#	src/langbot/pkg/pipeline/process/handlers/chat.py
#	src/langbot/pkg/provider/runners/localagent.py
#	src/langbot/pkg/provider/tools/toolmgr.py
#	src/langbot/templates/metadata/pipeline/ai.yaml
#	tests/unit_tests/test_preproc.py
#	web/src/app/home/components/dynamic-form/DynamicFormComponent.tsx
#	web/src/app/home/pipelines/components/pipeline-form/PipelineFormComponent.tsx

src/langbot/pkg/plugin/connector.py

@@ -751,6 +751,8 @@ class PluginRuntimeConnector(ManagedRuntimeConnector):
         event_ctx = context.EventContext.from_event(event)
 
         if not self.is_enable_plugin:
+            event_ctx._emitted_plugins = []
+            event_ctx._response_sources = []
             return event_ctx
 
         # Pass include_plugins to runtime for filtering
@@ -759,9 +761,21 @@ class PluginRuntimeConnector(ManagedRuntimeConnector):
         )
 
         event_ctx = context.EventContext.model_validate(event_ctx_result['event_context'])
+        event_ctx._emitted_plugins = event_ctx_result.get('emitted_plugins', [])
+        if 'response_sources' in event_ctx_result:
+            event_ctx._response_sources = event_ctx_result['response_sources']
 
         return event_ctx
 
+    async def notify_plugin_diagnostic(self, diagnostic: dict[str, Any]) -> None:
+        """Best-effort diagnostic forwarding to the plugin runtime."""
+        if not self.is_enable_plugin:
+            return
+        try:
+            await self.handler.notify_plugin_diagnostic(diagnostic)
+        except Exception as e:
+            self.ap.logger.debug(f'Plugin diagnostic forwarding skipped: {e}')
+
     async def list_tools(self, bound_plugins: list[str] | None = None) -> list[ComponentManifest]:
         if not self.is_enable_plugin:
             return []