feat(FN-3096): update restart integration store mock for plugin templates

Updates the restart integration test mock to account for plugin template behavior, keeping the test in sync with recent plugin template changes.

Fusion-Task-Id: FN-3096

packages/dashboard/src/__tests__/routes-agents.test.ts

@@ -1552,15 +1552,17 @@ describe("POST /agents/generate/spec with projectId scoping", () => {
 
 describe("GET /workflow-step-templates", () => {
   let store: TaskStore;
+  let pluginRunner: { getPluginWorkflowStepTemplates?: () => Array<{ pluginId: string; template: { id: string; name: string; description: string; prompt: string; toolMode: "readonly" | "coding"; category: string; icon: string } }> };
 
   beforeEach(() => {
     store = createMockStore();
+    pluginRunner = {};
   });
 
   function buildApp() {
     const app = express();
     app.use(express.json());
-    app.use("/api", createApiRoutes(store));
+    app.use("/api", createApiRoutes(store, { pluginRunner: pluginRunner as any }));
     return app;
   }
 
@@ -1595,19 +1597,67 @@ describe("GET /workflow-step-templates", () => {
     expect(ids).toContain("browser-verification");
     expect(ids).toContain("frontend-ux-design");
   });
+
+  it("merges plugin templates into workflow-step-templates response", async () => {
+    pluginRunner.getPluginWorkflowStepTemplates = () => [
+      {
+        pluginId: "my-plugin",
+        template: {
+          id: "plugin:my-plugin:my-step",
+          name: "My Plugin Step",
+          description: "Plugin contributed step",
+          prompt: "Run plugin checks",
+          toolMode: "readonly",
+          category: "Plugin",
+          icon: "puzzle",
+        },
+      },
+    ];
+
+    const res = await GET(buildApp(), "/api/workflow-step-templates");
+
+    expect(res.status).toBe(200);
+    expect(res.body.templates.some((t: { id: string }) => t.id === "plugin:my-plugin:my-step")).toBe(true);
+  });
+
+  it("returns plugin-only templates endpoint", async () => {
+    pluginRunner.getPluginWorkflowStepTemplates = () => [
+      {
+        pluginId: "my-plugin",
+        template: {
+          id: "plugin:my-plugin:my-step",
+          name: "My Plugin Step",
+          description: "Plugin contributed step",
+          prompt: "Run plugin checks",
+          toolMode: "readonly",
+          category: "Plugin",
+          icon: "puzzle",
+        },
+      },
+    ];
+
+    const res = await GET(buildApp(), "/api/plugin-workflow-step-templates");
+
+    expect(res.status).toBe(200);
+    expect(res.body.templates).toHaveLength(1);
+    expect(res.body.templates[0].pluginId).toBe("my-plugin");
+    expect(res.body.templates[0].template.id).toBe("plugin:my-plugin:my-step");
+  });
 });
 
 describe("POST /workflow-step-templates/:id/create", () => {
   let store: TaskStore;
+  let pluginRunner: { getPluginWorkflowStepTemplates?: () => Array<{ pluginId: string; template: { id: string; name: string; description: string; prompt: string; toolMode: "readonly" | "coding"; category: string; icon: string } }> };
 
   beforeEach(() => {
     store = createMockStore();
+    pluginRunner = {};
   });
 
   function buildApp() {
     const app = express();
     app.use(express.json());
-    app.use("/api", createApiRoutes(store));
+    app.use("/api", createApiRoutes(store, { pluginRunner: pluginRunner as any }));
     return app;
   }
 
@@ -1701,6 +1751,45 @@ describe("POST /workflow-step-templates/:id/create", () => {
     });
   });
 
+  it("creates workflow step from plugin template", async () => {
+    pluginRunner.getPluginWorkflowStepTemplates = () => [
+      {
+        pluginId: "my-plugin",
+        template: {
+          id: "plugin:my-plugin:my-step",
+          name: "My Plugin Step",
+          description: "Plugin contributed step",
+          prompt: "Run plugin checks",
+          toolMode: "coding",
+          category: "Plugin",
+          icon: "puzzle",
+        },
+      },
+    ];
+    (store.listWorkflowSteps as ReturnType<typeof vi.fn>).mockResolvedValueOnce([]);
+    (store.createWorkflowStep as ReturnType<typeof vi.fn>).mockResolvedValueOnce({
+      id: "WS-999",
+      templateId: "plugin:my-plugin:my-step",
+      name: "My Plugin Step",
+      description: "Plugin contributed step",
+      prompt: "Run plugin checks",
+      toolMode: "coding",
+      enabled: true,
+      createdAt: "2026-01-01",
+      updatedAt: "2026-01-01",
+    });
+
+    const res = await REQUEST(buildApp(), "POST", "/api/workflow-step-templates/plugin:my-plugin:my-step/create", JSON.stringify({}), {
+      "Content-Type": "application/json",
+    });
+
+    expect(res.status).toBe(201);
+    expect(store.createWorkflowStep).toHaveBeenCalledWith(expect.objectContaining({
+      templateId: "plugin:my-plugin:my-step",
+      name: "My Plugin Step",
+    }));
+  });
+
   it("returns 404 for non-existent template", async () => {
     const res = await REQUEST(buildApp(), "POST", "/api/workflow-step-templates/nonexistent/create", JSON.stringify({}), {
       "Content-Type": "application/json",