fix: update weekly report to XRP-only with production params

SYMBOLS: 3 symbols → XRPUSDT only
PROD_PARAMS: atr_sl_mult 2.0→1.5, atr_tp_mult 2.0→4.0

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

scripts/weekly_report.py

@@ -30,10 +30,10 @@ from src.notifier import DiscordNotifier
 
 
 # ── 프로덕션 파라미터 ──────────────────────────────────────────────
-SYMBOLS = ["XRPUSDT", "TRXUSDT", "DOGEUSDT"]
+SYMBOLS = ["XRPUSDT"]
 PROD_PARAMS = {
-    "atr_sl_mult": 2.0,
-    "atr_tp_mult": 2.0,
+    "atr_sl_mult": 1.5,
+    "atr_tp_mult": 4.0,
     "signal_threshold": 3,
     "adx_threshold": 25,
     "volume_multiplier": 2.5,