feat(cross-project): surface UI des permissions contactables — PermissionsPanel et TemplateEditor exposent contactable/default_contactable, alignement httpInvoker — #260 (typecheck + 48 tests verts, QA en attente)

frontend/src/features/permissions/permissions.test.tsx

@@ -102,6 +102,33 @@ describe("PermissionsPanel", () => {
     expect(screen.getAllByText("Réseau autorisé").length).toBeGreaterThan(0);
   });
 
+  it("defaults cross-project contactability off and persists the agent checkbox", async () => {
+    const { permission } = await renderPanel();
+
+    fireEvent.click(screen.getByText("Builder"));
+
+    const checkbox = screen.getByLabelText(
+      "Contactable depuis d’autres projets",
+    ) as HTMLInputElement;
+    expect(checkbox.checked).toBe(false);
+    expect(
+      screen.getByText(
+        "Autorise les agents d’autres projets IdeA à solliciter cet agent via l’orchestration inter-projets. L’agent reste soumis à ses permissions et à son contexte.",
+      ),
+    ).toBeTruthy();
+
+    fireEvent.click(checkbox);
+    fireEvent.click(screen.getByRole("button", { name: "Save network" }));
+
+    await waitFor(async () => {
+      const doc = await permission.getProjectSystemPermissions(PROJECT_ID);
+      expect(doc.agents?.[0]).toEqual({
+        agentId: expect.any(String),
+        permissions: { crossProjectContactable: true },
+      });
+    });
+  });
+
   it("renders the network control read-only when persisted control says so", async () => {
     const agent = new MockAgentGateway();
     const permission = new MockPermissionGateway();