refactor(web-ai): rename signal_v2→ai_trade, deprecate signal_v1

박재오 결정 2026-05-19 — V2를 정식 명칭 ai_trade로 graduation,
V1은 deprecated 마킹 (legacy 디렉토리 이동은 file lock 풀린 후 후속).

변경 사항:
- signal_v2/ → ai_trade/ (git mv, import 일괄 sed: signal_v2.x → ai_trade.x)
- root start.bat → legacy/start_v1.bat (V1 자동 시작 차단)
- ai_trade/start.bat 내부 uvicorn target signal_v2.main → ai_trade.main
- signal_v1/DEPRECATED.md 추가 (사용 금지 명시)
- CLAUDE.md 디렉토리 표·서버 시작 방식 갱신
- services/ 디렉토리 미래 예정 (Plan-B-Insta 작업 시 신설)

ai_trade tests 59/59 PASS 확인.

signal_v1/ 디렉토리 자체 이동(legacy/signal_v1/)은 telegram_bot.log +
data/news_snapshots.db file lock으로 보류. lock 해제 후 후속 커밋.

후속 작업: Plan-B-Insta (services/insta-render + NAS insta 분할)

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

ai_trade/scheduler.py

@@ -0,0 +1,99 @@
+"""Polling scheduler — 시간대별 분기 + 휴장일 처리."""
+from __future__ import annotations
+import json
+import logging
+from datetime import datetime, timedelta, time
+from pathlib import Path
+from zoneinfo import ZoneInfo
+
+logger = logging.getLogger(__name__)
+
+KST = ZoneInfo("Asia/Seoul")
+_HOLIDAYS_PATH = Path(__file__).parent / "holidays.json"
+_HOLIDAYS: set[str] = set(json.loads(_HOLIDAYS_PATH.read_text(encoding="utf-8")))
+
+# Market windows (정규장)
+_PRE_OPEN = time(7, 0)
+_OPEN = time(9, 0)
+_CLOSE = time(15, 30)
+_POST_END = time(20, 0)
+
+# NXT windows (시간외)
+_NXT_PRE_END = time(23, 30)
+_NXT_POST_OPEN = time(4, 30)
+# 23:30 - 04:30 (dead zone) skip
+
+
+def _is_market_day(now: datetime) -> bool:
+    """평일 + 휴장일 아닌 날."""
+    if now.weekday() >= 5:  # Sat/Sun
+        return False
+    return now.strftime("%Y-%m-%d") not in _HOLIDAYS
+
+
+def _is_polling_window(now: datetime) -> bool:
+    """폴링 윈도우: 07:00-23:30 + 04:30-07:00."""
+    t = now.time()
+    return (
+        (_PRE_OPEN <= t < _NXT_PRE_END)
+        or (_NXT_POST_OPEN <= t < _PRE_OPEN)
+    )
+
+
+def _next_interval(now: datetime) -> float:
+    """다음 폴링까지 sleep 초수."""
+    if not _is_market_day(now):
+        return _seconds_until_next_market_open(now)
+
+    t = now.time()
+    if _PRE_OPEN <= t < _OPEN:
+        return 300.0  # 장전 5분
+    elif _OPEN <= t < _CLOSE:
+        return 60.0   # 장중 1분
+    elif _CLOSE <= t < _POST_END:
+        return 300.0  # 장후 5분
+    elif _POST_END <= t < _NXT_PRE_END:
+        return 300.0  # NXT 야간 5분
+    elif _NXT_POST_OPEN <= t < _PRE_OPEN:
+        return 300.0  # NXT 새벽 5분
+    else:
+        # Dead zone (23:30-04:30) — wait until next 04:30
+        return _seconds_until_nxt_or_market_open(now)
+
+
+def _seconds_until_nxt_or_market_open(now: datetime) -> float:
+    """다음 04:30 (NXT 새벽 start) 까지 초수. 휴장일은 다음 영업일 07:00."""
+    candidate = now.replace(hour=4, minute=30, second=0, microsecond=0)
+    if candidate <= now:
+        candidate += timedelta(days=1)
+
+    for _ in range(14):
+        if _is_market_day(candidate):
+            return (candidate - now).total_seconds()
+        candidate += timedelta(days=1)
+
+    logger.warning("could not find next market day within 14 days")
+    return 86400.0
+
+
+def _is_post_close_trigger(now: datetime) -> bool:
+    """16:00 KST ±1분 (post-close cycle 트리거). 평일/영업일만."""
+    if not _is_market_day(now):
+        return False
+    t = now.time()
+    return time(16, 0) <= t < time(16, 1)
+
+
+def _seconds_until_next_market_open(now: datetime) -> float:
+    """다음 영업일의 07:00 KST 까지 초수 (휴장일/주말용)."""
+    candidate = now.replace(hour=7, minute=0, second=0, microsecond=0)
+    if candidate <= now:
+        candidate += timedelta(days=1)
+
+    for _ in range(14):  # safety bound (max 2 weeks of holidays)
+        if _is_market_day(candidate):
+            return (candidate - now).total_seconds()
+        candidate += timedelta(days=1)
+
+    logger.warning("could not find next market day within 14 days")
+    return 86400.0