fix: universe_service market_cap 상한 5e12→2e13 — NVDA $5.5T 스냅샷 필터 해제

NVDA 시총이 $5.5T를 초과하면서 build/screen 양쪽의 5e12($5T) 상한에
걸려 스냅샷 생성 및 조회에서 제외되던 문제 수정.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/services/universe_service.py

@@ -411,7 +411,7 @@ class UniverseService:
                         continue
 
                     market_cap = shares * close
-                    if math.isnan(market_cap) or market_cap <= 0 or market_cap > 5e12:
+                    if math.isnan(market_cap) or market_cap <= 0 or market_cap > 2e13:
                         continue
 
                     snapshot_dt = datetime(
@@ -596,7 +596,7 @@ class UniverseService:
         snapshot_dt = datetime(target.year, target.month, 1, tzinfo=timezone.utc)
 
         # Always exclude clearly bad data (sanity cap: $5T max, historical record is ~$3.7T)
-        _MAX_MARKET_CAP = 5e12
+        _MAX_MARKET_CAP = 2e13
         conditions = [
             UniverseSnapshot.snapshot_date == snapshot_dt,
             UniverseSnapshot.market_cap <= _MAX_MARKET_CAP,