Fix auto-settle for non-Group-A: map results by TLA, not full name

_results_football_data resolved team codes via code_for(full name), which
only covered Group A teams, so FINISHED matches in other groups (e.g.
Canada vs Bosnia-Herzegovina) were silently dropped and never settled.
Use tla -> code_for_tla (same as schedule ingestion; covers all 48), with
full-name fallback. Verified: source FINISHED 2 -> 3, CAN-BIH settles 1-1.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

backend/app/services/schedule_fetch.py

@@ -221,8 +221,12 @@ async def _results_football_data() -> list[dict]:
     for m in data.get("matches", []):
         if m.get("status") != "FINISHED":
             continue
-        a = code_for((m.get("homeTeam") or {}).get("name", "") or "")
+        ht = m.get("homeTeam") or {}
-        b = code_for((m.get("awayTeam") or {}).get("name", "") or "")
+        at = m.get("awayTeam") or {}
+        # 일정 수집과 동일하게 tla(3글자) → 코드. 풀네임 매핑(code_for)은 일부 팀만
+        # 커버해 누락이 생기므로 tla 우선, 없을 때만 풀네임 폴백.
+        a = code_for_tla(ht.get("tla") or "") or code_for(ht.get("name") or "")
+        b = code_for_tla(at.get("tla") or "") or code_for(at.get("name") or "")
         if not a or not b:
             continue
         ft = ((m.get("score") or {}).get("fullTime") or {})