feat: volume-lead strategy with compounding, WF filter, and DB-backed simulation

- core/strategy.py: replace trend strategy with volume-lead accumulation
  (vol spike + 2h quiet → signal, +4.8% rise → entry)
- core/trader.py: compound budget adjusts on both profit and loss (floor 30%)
- core/notify.py: add accumulation signal telegram notification
- ohlcv_db.py: Oracle ADB OHLCV cache (insert, load, incremental update)
- sim_365.py: 365-day compounding simulation loading from DB
- krw_sim.py: KRW-based simulation with MAX_POSITIONS constraint
- ticker_sim.py: ticker count expansion comparison
- STRATEGY.md: full strategy documentation
- .gitignore: exclude *.pkl cache files

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

core/notify.py

@@ -62,6 +62,16 @@ def notify_sell(
     )
 
 
+def notify_signal(ticker: str, signal_price: float, vol_mult: float) -> None:
+    """거래량 축적 신호 감지 알림."""
+    _send(
+        f"🔍 <b>[축적감지]</b> {ticker}\n"
+        f"신호가: {signal_price:,.2f}원\n"
+        f"거래량: {vol_mult:.1f}x 급증 + 2h 횡보\n"
+        f"진입 목표: {signal_price * 1.048:,.2f}원 (+4.8%)"
+    )
+
+
 def notify_error(message: str) -> None:
     _send(f"⚠️ <b>[오류]</b>\n{message}")