fix(social): compute postsCount + followingCount live (were hardcoded 0)

Endpoint /api/social/profile/[userId] returned (profile as any).postsCount ?? 0
und (profile as any).followingCount ?? 0 — Profile-schema hat aber weder
postsCount noch followingCount columns. Daher zeigte UI immer 0 obwohl User
Posts hatte.

Fix: 2 zusätzliche COUNT-queries in Promise.all:
- usePrisma().communityPost.count({ userId, isModerated: false }) → postsCount
- usePrisma().userFollow.count({ followerId: userId }) → followingCount

followersCount bleibt unverändert (wird via trigger denormalisiert in profile-row).

Tests: backend/tests/social/profile-counts.test.ts — 4 Cases
  (posts>0, posts=0, following count, followers passthrough). 4/4 grün.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

backend/server/api/social/profile/[userId].get.ts

@@ -17,7 +17,7 @@ export default defineEventHandler(async (event) => {
     currentUserId = u.id;
   } catch {}
 
-  const [profile, score, followRelation, recentPosts, metaMap] =
+  const [profile, score, followRelation, recentPosts, metaMap, postsCount, followingCount] =
     await Promise.all([
       getProfile(targetUserId),
       getUserScore(targetUserId),
@@ -38,6 +38,12 @@ export default defineEventHandler(async (event) => {
         },
       }),
       getUsersMeta([targetUserId]),
+      usePrisma().communityPost.count({
+        where: { userId: targetUserId, isModerated: false },
+      }),
+      usePrisma().userFollow.count({
+        where: { followerId: targetUserId },
+      }),
     ]);
 
   if (!profile)
@@ -52,8 +58,8 @@ export default defineEventHandler(async (event) => {
     avatar: meta.avatar,
     bio: (profile as any).bio ?? null,
     followersCount: profile.followersCount ?? 0,
-    followingCount: (profile as any).followingCount ?? 0,
+    followingCount,
-    postsCount: (profile as any).postsCount ?? 0,
+    postsCount,
     tier: score?.tier ?? "beginner",
     totalPoints: score?.totalPoints ?? 0,
     isFollowing: !!followRelation,

backend/tests/social/profile-counts.test.ts

@@ -0,0 +1,136 @@
+/**
+ * Tests for GET /api/social/profile/[userId] — postsCount + followingCount
+ *
+ * Covers:
+ *   - postsCount reflects live communityPost.count (not 0 when posts exist)
+ *   - followingCount reflects live userFollow.count
+ *   - followersCount passes through from profile row (denormalized)
+ */
+import { describe, expect, it, vi, beforeEach } from "vitest";
+
+const mocks = vi.hoisted(() => ({
+  communityPost: {
+    findMany: vi.fn(),
+    count: vi.fn(),
+  },
+  userFollow: {
+    findUnique: vi.fn(),
+    count: vi.fn(),
+  },
+  profile: {
+    findUnique: vi.fn(),
+  },
+  userScore: {
+    findUnique: vi.fn(),
+  },
+}));
+
+vi.mock("../../server/utils/prisma", () => ({
+  usePrisma: () => ({
+    communityPost: mocks.communityPost,
+    userFollow: mocks.userFollow,
+    profile: mocks.profile,
+    userScore: mocks.userScore,
+  }),
+}));
+
+vi.mock("../../server/utils/auth", () => ({
+  requireUser: vi.fn().mockRejectedValue(
+    Object.assign(new Error("Unauthorized"), { statusCode: 401 }),
+  ),
+}));
+
+vi.mock("../../server/db/profile", () => ({
+  getProfile: vi.fn().mockResolvedValue({
+    id: "user-1",
+    username: "testuser",
+    followersCount: 3,
+    createdAt: new Date("2026-01-01T00:00:00Z"),
+  }),
+}));
+
+vi.mock("../../server/db/scores", () => ({
+  getUserScore: vi.fn().mockResolvedValue({ tier: "beginner", totalPoints: 0 }),
+}));
+
+vi.mock("../../server/db/social", () => ({
+  getFollowRelation: vi.fn().mockResolvedValue(null),
+}));
+
+vi.mock("../../server/utils/getUsersMeta", () => ({
+  getUsersMeta: vi.fn().mockResolvedValue({
+    "user-1": { nickname: "Tester", avatar: null },
+  }),
+}));
+
+// Stub Nitro globals needed by the endpoint file
+const g = globalThis as Record<string, unknown>;
+if (typeof g.getRouterParam === "undefined") {
+  g.getRouterParam = (_event: unknown, key: string) =>
+    key === "userId" ? "user-1" : undefined;
+}
+
+beforeEach(() => {
+  vi.clearAllMocks();
+  mocks.communityPost.findMany.mockResolvedValue([]);
+  mocks.communityPost.count.mockResolvedValue(0);
+  mocks.userFollow.count.mockResolvedValue(0);
+  mocks.userFollow.findUnique.mockResolvedValue(null);
+});
+
+async function callHandler() {
+  const mod = await import("../../server/api/social/profile/[userId].get");
+  const handler =
+    typeof mod.default === "function"
+      ? mod.default
+      : (mod.default as { handler?: unknown }).handler;
+  return (handler as (e: unknown) => Promise<unknown>)({ body: null });
+}
+
+describe("postsCount", () => {
+  it("returns postsCount > 0 when user has unmoderated posts", async () => {
+    mocks.communityPost.count.mockResolvedValueOnce(5);
+    mocks.userFollow.count.mockResolvedValueOnce(2);
+
+    const result = (await callHandler()) as Record<string, unknown>;
+
+    expect(result.postsCount).toBe(5);
+    expect(mocks.communityPost.count).toHaveBeenCalledWith({
+      where: { userId: "user-1", isModerated: false },
+    });
+  });
+
+  it("returns postsCount = 0 when user has no posts", async () => {
+    mocks.communityPost.count.mockResolvedValueOnce(0);
+    mocks.userFollow.count.mockResolvedValueOnce(0);
+
+    const result = (await callHandler()) as Record<string, unknown>;
+
+    expect(result.postsCount).toBe(0);
+  });
+});
+
+describe("followingCount", () => {
+  it("returns followingCount from userFollow.count", async () => {
+    mocks.communityPost.count.mockResolvedValueOnce(2);
+    mocks.userFollow.count.mockResolvedValueOnce(7);
+
+    const result = (await callHandler()) as Record<string, unknown>;
+
+    expect(result.followingCount).toBe(7);
+    expect(mocks.userFollow.count).toHaveBeenCalledWith({
+      where: { followerId: "user-1" },
+    });
+  });
+});
+
+describe("followersCount", () => {
+  it("passes through denormalized followersCount from profile row", async () => {
+    mocks.communityPost.count.mockResolvedValueOnce(0);
+    mocks.userFollow.count.mockResolvedValueOnce(0);
+
+    const result = (await callHandler()) as Record<string, unknown>;
+
+    expect(result.followersCount).toBe(3);
+  });
+});