style: apply prettier across the tree

One-shot prettier pass so the new format:check gate starts from a clean
baseline. Formatting only — no behaviour change. Generator-owned and
vendored artifacts stay untouched via .prettierignore.

src/components/gamification/__tests__/achievement-unlock-notifier.test.tsx

@@ -16,10 +16,11 @@ vi.mock("@/hooks/use-auth", () => ({
   useAuth: () => ({ isAuthenticated: true, user: mockUser }),
 }));
 
-const useAchievementsQuery =
-  vi.fn<(opts?: { enabled?: boolean }) => { data: undefined }>(() => ({
-    data: undefined,
-  }));
+const useAchievementsQuery = vi.fn<
+  (opts?: { enabled?: boolean }) => { data: undefined }
+>(() => ({
+  data: undefined,
+}));
 
 vi.mock("@/lib/queries/use-achievements-query", () => ({
   useAchievementsQuery: (opts?: { enabled?: boolean }) =>

src/components/gamification/__tests__/recent-achievements-card.test.tsx

@@ -142,7 +142,11 @@ describe("<RecentAchievementsCard> — achievements module gate", () => {
     mockData = {
       summary: {},
       achievements: [
-        { ...baseAchievement, id: "a", completedAt: "2026-04-15T12:00:00.000Z" },
+        {
+          ...baseAchievement,
+          id: "a",
+          completedAt: "2026-04-15T12:00:00.000Z",
+        },
       ],
       metrics: {},
     };
@@ -154,7 +158,11 @@ describe("<RecentAchievementsCard> — achievements module gate", () => {
     mockData = {
       summary: {},
       achievements: [
-        { ...baseAchievement, id: "a", completedAt: "2026-04-15T12:00:00.000Z" },
+        {
+          ...baseAchievement,
+          id: "a",
+          completedAt: "2026-04-15T12:00:00.000Z",
+        },
       ],
       metrics: {},
     };