feat: add Fear & Greed filter to entry logic

- core/fng.py: F&G API wrapper with 1h cache (alternative.me)
  - FNG_MIN_ENTRY=41 (env-configurable), blocks entry below threshold
- core/strategy.py: call is_entry_allowed() before volume/regime checks
- daemon/runner.py: log F&G status on every scan cycle
- core/notify.py: include F&G value in buy/signal/status notifications
- core/trader.py: pass current F&G value to notify_buy

Backtest evidence (1y / 18 tickers / 1h candles):
  - No filter:   820 trades, 32.7% WR, avg +0.012%, KRW +95k
  - F&G >= 41:   372 trades, 39.5% WR, avg +0.462%, KRW +1.72M
  - Blocked 452 trades (avg -0.372%, saved ~1.68M KRW loss)

Also add:
- backtest_db.py: Oracle DB storage for backtest runs/results/trades
- fng_1y_backtest.py, fng_adaptive_backtest.py, fng_sim_comparison.py

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

core/notify.py

@@ -31,16 +31,27 @@ def _send(text: str) -> None:
 def notify_buy(
     ticker: str, price: float, amount: float, invested_krw: int,
     max_budget: int = 0, per_position: int = 0,
+    fng: int = 0,
 ) -> None:
     budget_line = (
         f"운용예산: {max_budget:,}원 (포지션당 {per_position:,}원)\n"
         if max_budget else ""
     )
+    fng_label = (
+        "극탐욕" if fng >= 76 else
+        "탐욕"   if fng >= 56 else
+        "중립"   if fng >= 46 else
+        "약공포" if fng >= 41 else
+        "공포"   if fng >= 26 else
+        "극공포"
+    ) if fng else ""
+    fng_line = f"F&G: {fng} ({fng_label})\n" if fng else ""
     _send(
         f"📈 <b>[매수]</b> {ticker}\n"
         f"가격: {price:,.2f}원\n"
         f"수량: {amount:.8f}\n"
         f"투자금: {invested_krw:,.2f}원\n"
+        f"{fng_line}"
         f"{budget_line}"
     )
 
@@ -62,12 +73,28 @@ def notify_sell(
     )
 
 
-def notify_signal(ticker: str, signal_price: float, vol_mult: float) -> None:
+def notify_signal(ticker: str, signal_price: float, vol_mult: float, fng: int = 0) -> None:
     """거래량 축적 신호 감지 알림."""
+    from .fng import FNG_MIN_ENTRY
+    fng_label = (
+        "극탐욕" if fng >= 76 else
+        "탐욕"   if fng >= 56 else
+        "중립"   if fng >= 46 else
+        "약공포" if fng >= 41 else
+        "공포"   if fng >= 26 else
+        "극공포"
+    ) if fng else ""
+    fng_line = f"F&amp;G: {fng} ({fng_label})\n" if fng else ""
+    warn_line = (
+        f"⚠️ F&amp;G={fng} &lt; {FNG_MIN_ENTRY} → <b>진입차단중</b>\n"
+        if fng and fng < FNG_MIN_ENTRY else ""
+    )
     _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"{fng_line}"
+        f"{warn_line}"
         f"진입 목표: {signal_price * 1.048:,.2f}원 (+4.8%)"
     )
 
@@ -98,6 +125,20 @@ def notify_status(
         f"| 조건 TREND≥{regime['trend_pct']}% / VOL≥{regime['vol_mult']}x\n"
     )
 
+    # F&G 지수
+    from .fng import get_fng, FNG_MIN_ENTRY
+    fv = get_fng()
+    fng_label = (
+        "극탐욕" if fv >= 76 else
+        "탐욕"   if fv >= 56 else
+        "중립"   if fv >= 46 else
+        "약공포" if fv >= 41 else
+        "공포"   if fv >= 26 else
+        "극공포"
+    )
+    fng_status = "✅진입허용" if fv >= FNG_MIN_ENTRY else "🚫진입차단"
+    fng_line = f"😨 F&amp;G: {fv} ({fng_label}) {fng_status}\n"
+
     # 1시간 이상 보유 포지션만 필터
     long_positions = {
         ticker: pos for ticker, pos in positions.items()
@@ -112,7 +153,7 @@ def notify_status(
     )
 
     # 포지션 없어도 레짐 정보는 전송
-    header = f"📊 <b>[{now} 현황]</b>\n{regime_line}{budget_info}"
+    header = f"📊 <b>[{now} 현황]</b>\n{regime_line}{fng_line}{budget_info}"
 
     if not long_positions:
         _send(header + "1h+ 보유 포지션 없음")