feat(sveta): Add tests verifying username remains clickable with decorative title badge on leaderboard

tests/unit/services/game/store.py

@@ -755,7 +755,28 @@ def test_leaderboard_entry_exposes_score_and_prestige(local_db):
     farm = store.get_farm(user["uid"])
     assert entry["prestige"] == 3
     assert entry["score"] == economy.farm_score(farm)
-    assert {"rank", "username", "level", "xp", "coins", "total_harvests", "prestige", "score"} <= set(entry)
+    assert {"rank", "username", "level", "xp", "coins", "total_harvests", "prestige", "score", "title"} <= set(entry)
+
+
+def test_leaderboard_entry_title_empty_when_no_title_equipped(local_db):
+    user = _reset("unit_lb_no_title")
+    _set(user, prestige=1)
+    entry = next(e for e in store.leaderboard(50) if e["username"] == "unit_lb_no_title")
+    assert "title" in entry
+    assert entry["title"] == ""
+
+
+def test_leaderboard_entry_title_is_display_name_when_equipped(local_db):
+    user = _reset("unit_lb_title_user", coins=300_000)
+    _set(user, prestige=1)
+    from devplacepy.services.game.store.cosmetics import equip_title
+    store.buy_cosmetic(user, "title_refactorer")
+    equip_title(user, "title_refactorer")
+    _clear_game_caches()
+    entry = next(e for e in store.leaderboard(50) if e["username"] == "unit_lb_title_user")
+    assert entry["title"] == "Serial Refactorer"
+    assert entry["username"] == "unit_lb_title_user"
+    assert entry["title"] != entry["username"]
 
 
 # --- market saturation ---------------------------------------------------------
@@ -1177,3 +1198,6 @@ def test_claim_grant_partial_treasury(local_db):
     result = store.claim_grant(user)
     assert result["amount"] == 300
     assert store.treasury_balance() == 0
+
+
+