Complete M11 Creator Studio and M12 Trust & Safety for PC5

- Creator Studio: Visual behavior & property inspector, GLB model importer, binary persistence
- Trust & Safety: 18+ TOS confirmation (DOB removed), creator guidelines & briefing card on join, in-game reporting HUD
- Test Harness: Add --filter, --skip-backend, --skip-godot to run_checkpoint_tests.py

backend/tests/test_chat_reports.py

@@ -199,3 +199,45 @@ class TestModerationQueue:
         # Attempting to use bad_user's token fails with 403 inactive account
         bad_me = client.get("/api/users/me", headers=bad_user["headers"])
         assert bad_me.status_code == 403
+
+    def test_submit_world_and_user_moderation_report(self):
+        """Test submitting general moderation reports for worlds and users."""
+        client = TestClient(app)
+        reporter = _register(client, "gen_reporter")
+        admin = _register(client, "admin_gen_mod")
+
+        # Report a world
+        world_rep = client.post(
+            "/api/moderation/reports",
+            headers=reporter["headers"],
+            json={
+                "target_type": "world",
+                "target_id": 42,
+                "reason": "Violates world guidelines",
+                "category": "world_rules",
+            },
+        )
+        assert world_rep.status_code == 201, world_rep.text
+        assert "[WORLD:42]" in world_rep.json()["reason"]
+
+        # Report a user
+        user_rep = client.post(
+            "/api/moderation/reports",
+            headers=reporter["headers"],
+            json={
+                "target_type": "user",
+                "target_id": 99,
+                "reason": "Harassment in world",
+                "category": "harassment",
+            },
+        )
+        assert user_rep.status_code == 201, user_rep.text
+        assert "[USER:99]" in user_rep.json()["reason"]
+
+        # Admin lists open reports and sees both
+        rep_list = client.get("/api/moderation/reports", headers=admin["headers"])
+        assert rep_list.status_code == 200
+        reasons = [r["reason"] for r in rep_list.json()]
+        assert any("[WORLD:42]" in r for r in reasons)
+        assert any("[USER:99]" in r for r in reasons)
+