fix: complete model renderer states and ids

src/routes/page.test.ts

@@ -45,4 +45,36 @@ describe("home page model renderer", () => {
     expect(body).toContain("Validation failed");
     expect(body).toContain("Dashboard document is invalid.");
   });
+
+  test("renders empty and loading model states without crashing", () => {
+    const empty = render(Page, {
+      props: {
+        data: {
+          dashboard: {
+            state: "empty",
+            title: "No Dashboard Model",
+            subtitle: "No active document",
+            message: "No validated dashboard document is active yet.",
+          },
+        },
+      },
+    });
+    const loading = render(Page, {
+      props: {
+        data: {
+          dashboard: {
+            state: "loading",
+            title: "Loading Dashboard",
+            subtitle: "Fetching active model",
+            message: "Waiting for the active dashboard document.",
+          },
+        },
+      },
+    });
+
+    expect(empty.body).toContain("No Dashboard Model");
+    expect(empty.body).toContain("No active document");
+    expect(loading.body).toContain("Loading Dashboard");
+    expect(loading.body).toContain("Fetching active model");
+  });
 });