feat: add project-aware agent workspace

src/features/workbench/api/investigation-report.ts

@@ -1,11 +1,13 @@
 import { z } from "zod";
-import type { AgentTaskDiscussionContext } from "@/features/agent";
+import type { AgentTaskDiscussionContext, AnswerUiSelection } from "@/features/agent";
+import { reportUiBlocksSchema } from "@/features/agent";
 
 export type InvestigationDiscussion = {
   prompt?: string;
   context?: AgentTaskDiscussionContext;
   // Display metadata from the selected report, never the task's current round.
   reportGeneration?: number | null;
+  reference?: AnswerUiSelection;
 };
 
 const text = z.string().trim().min(1);
@@ -74,7 +76,8 @@ export const investigationReportSchema = z
     outcome: z.enum(["concluded", "insufficient_data"]).nullish(),
     stop_reason: text.nullish(),
     data_gaps: z.array(dataGapSchema).nullish(),
-    diagram: investigationDiagramSchema.nullish()
+    diagram: investigationDiagramSchema.nullish(),
+    ui_blocks: reportUiBlocksSchema.optional()
   })
   .strict()
   .superRefine((report, ctx) => {