feat(agent): support Responses steering and project-aware tools

Use the dedicated TJWATER_AGENT_URL and Responses stream protocol. Keep running
turns active while users steer or queue follow-ups and edit pending delivery.
Refresh the model catalog before generation and preserve approval mode selection.

Integrate scoped investigation messaging/presentation, geographic place selection,
current Agent composer styles and supporting workbench contracts.

Validation: 77 focused Vitest checks, 21 browser cases, lint, typecheck and
production build. Preserve direct Server/Agent routing and project authentication.

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

@@ -1,9 +1,18 @@
 import { z } from "zod";
 import type { AgentTaskDiscussionContext } from "@/features/agent";
 
-export type InvestigationDiscussion = { prompt?: string; context?: AgentTaskDiscussionContext };
+export type InvestigationDiscussion = {
+  prompt?: string;
+  context?: AgentTaskDiscussionContext;
+  // Display metadata from the selected report, never the task's current round.
+  reportGeneration?: number | null;
+};
 
 const text = z.string().trim().min(1);
+export const investigationMapTargetSchema = z.object({
+  source_id: z.enum(["junctions", "pipes", "valves", "pumps", "tanks", "reservoirs", "scada"]),
+  feature_id: text.max(128)
+}).strict();
 export const investigationDiagramSchema = z
   .object({
     title: text,
@@ -23,6 +32,8 @@ export const investigationDiagramSchema = z
           .object({
             node_id: z.string().regex(/^[A-Za-z_][A-Za-z0-9_-]{0,79}$/),
             label: text,
+            status: z.enum(["pending", "running", "completed", "waiting_human", "failed", "skipped", "cancelled"]).nullish(),
+            map_targets: z.array(investigationMapTargetSchema).max(100).optional(),
             evidence_refs: z.array(text).default([]),
             action_refs: z.array(z.string().uuid()).default([])
           })
@@ -91,3 +102,4 @@ export const investigationReportSchema = z
 
 export type InvestigationReport = z.infer<typeof investigationReportSchema>;
 export type InvestigationDiagram = z.infer<typeof investigationDiagramSchema>;
+export type InvestigationMapTarget = z.infer<typeof investigationMapTargetSchema>;