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/components/map-dev-panel.test.tsx

@@ -9,7 +9,25 @@ import { MapDevPanel } from "./map-dev-panel";
 
 afterEach(cleanup);
 
-describe("MapDevPanel flow controls", () => {
+describe("MapDevPanel", () => {
+  it("defaults to following investigations and allows disabling it", async () => {
+    const user = userEvent.setup();
+    const onFollowChange = vi.fn();
+    render(
+      <MapDevPanel
+        commands={createCommands()}
+        controllerState={createControllerState()}
+        detailFeature={null}
+        onClose={vi.fn()}
+        onInvestigationFollowChange={onFollowChange}
+      />
+    );
+    const follow = screen.getByRole("checkbox", { name: "跟随所选调查" });
+    expect(follow).toBeChecked();
+    await user.click(follow);
+    expect(onFollowChange).toHaveBeenCalledWith(false);
+  });
+
   it("updates a pipe with its signed velocity", async () => {
     const user = userEvent.setup();
     const commands = createCommands();
@@ -23,6 +41,7 @@ describe("MapDevPanel flow controls", () => {
       />
     );
 
+    await user.click(screen.getByText("水流调试"));
     const pipeId = screen.getByLabelText("管道 ID");
     const velocity = screen.getByLabelText("有符号流速");
     await user.clear(pipeId);
@@ -37,7 +56,8 @@ describe("MapDevPanel flow controls", () => {
     });
   });
 
-  it("shows the current flow direction counts", () => {
+  it("shows the current flow direction counts", async () => {
+    const user = userEvent.setup();
     render(
       <MapDevPanel
         commands={createCommands()}
@@ -55,9 +75,12 @@ describe("MapDevPanel flow controls", () => {
       />
     );
 
-    expect(screen.getByRole("status", {
-      name: ""
-    })).toHaveTextContent("已赋值 4 · 正向 2 · 反向 1 · 停止 1");
+    await user.click(screen.getByText("水流调试"));
+    expect(
+      screen.getByRole("status", {
+        name: ""
+      })
+    ).toHaveTextContent("已赋值 4 · 正向 2 · 反向 1 · 停止 1");
   });
 });