feat: add internationalization message platform

tests/features/reference-feature/reference-page.test.tsx

@@ -55,7 +55,7 @@ function inputWith(
       value: {
         resourceId: "created",
         title: name,
-        createdAtLabel: null,
+        createdAt: null,
       },
     }),
     getResource: async (resourceId) => ({
@@ -63,7 +63,7 @@ function inputWith(
       value: {
         resourceId,
         title: "Detail",
-        createdAtLabel: null,
+        createdAt: null,
       },
     }),
     ...overrides,
@@ -90,7 +90,7 @@ describe("reference feature page states", () => {
         {
           resourceId: "reference-1",
           title: "Loaded",
-          createdAtLabel: null,
+          createdAt: null,
         },
       ],
     });
@@ -191,7 +191,7 @@ describe("reference feature page states", () => {
           {
             resourceId: "existing",
             title: "Existing",
-            createdAtLabel: null,
+            createdAt: null,
           },
         ],
       })
@@ -209,7 +209,7 @@ describe("reference feature page states", () => {
           {
             resourceId: "recovered",
             title: "Recovered",
-            createdAtLabel: null,
+            createdAt: null,
           },
         ],
       });
@@ -217,7 +217,9 @@ describe("reference feature page states", () => {
     await screen.findByText("Existing");
     await user.click(screen.getByRole("button", { name: "새로고침" }));
 
-    expect(await screen.findByText("stale-degraded")).toBeVisible();
+    expect(
+      await screen.findByText("기존 정보를 표시하고 있습니다."),
+    ).toBeVisible();
     expect(screen.getByText("Existing")).toBeVisible();
     await user.click(screen.getByRole("button", { name: "다시 시도" }));
     expect(await screen.findByText("Recovered")).toBeVisible();