feat: renderin imrpovements

frontend/src/lib/graph/sourceRenderingLogic.ts

@@ -20,14 +20,21 @@ export type SourceRenderingLogicContext = {
   setNodes?: (updater: (nodes: { id: string; type?: string; data?: unknown }[]) => { id: string; type?: string; data?: unknown }[]) => void
   /** Optional: AI connection for agent source (used when Rendering node runs the agent). */
   aiConnection?: unknown
+  /** Optional: called when agent streaming starts (Rendering node can show streaming preview). */
+  onStreamingStart?: () => void
+  /** Optional: called with each text chunk during agent stream (Rendering node can update preview). */
+  onStreamingChunk?: (chunk: string) => void
 }
 
 /**
  * Result of getResolvedContent: resolved string plus the config type to use for final render.
+ * When the source is an agent with reasoning enabled, reasoning may be set for a collapsible section.
  */
 export type ResolvedContentResult = {
   resolved: string
   outputTypeId: ConfigTypeId
+  /** Optional reasoning section (e.g. agent with reasoning enabled); renderer shows it in a collapsible. */
+  reasoning?: string
 }
 
 /**