feat: add MTF pullback bot for OOS dry-run verification

Volume-backed pullback strategy with 1h meta filter (EMA50/200 + ADX)
and 15m 3-candle trigger sequence. Deployed as separate mtf-bot container
alongside existing cointrader. All orders are dry-run (logged only).

- src/mtf_bot.py: Module 1-4 (DataFetcher, MetaFilter, TriggerStrategy, ExecutionManager)
- main_mtf.py: OOS dry-run entry point
- docker-compose.yml: mtf-bot service added
- requirements.txt: ccxt dependency added
- scripts/mtf_backtest.py: backtest script (Phase 1 robustness: SHORT PF≥1.5 in 7/9 combos)

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

main_mtf.py

@@ -0,0 +1,41 @@
+"""MTF Pullback Bot — OOS Dry-run Entry Point."""
+
+import asyncio
+import signal as sig
+from loguru import logger
+from src.mtf_bot import MTFPullbackBot
+from src.logger_setup import setup_logger
+
+
+async def main():
+    setup_logger(log_level="INFO")
+    logger.info("MTF Pullback Bot 시작 (Dry-run OOS 모드)")
+
+    bot = MTFPullbackBot(symbol="XRP/USDT:USDT")
+
+    loop = asyncio.get_running_loop()
+    shutdown = asyncio.Event()
+
+    def _on_signal():
+        logger.warning("종료 시그널 수신 (SIGTERM/SIGINT)")
+        shutdown.set()
+
+    for s in (sig.SIGTERM, sig.SIGINT):
+        loop.add_signal_handler(s, _on_signal)
+
+    bot_task = asyncio.create_task(bot.run(), name="mtf-bot")
+    shutdown_task = asyncio.create_task(shutdown.wait(), name="shutdown-wait")
+
+    done, pending = await asyncio.wait(
+        [bot_task, shutdown_task],
+        return_when=asyncio.FIRST_COMPLETED,
+    )
+
+    bot_task.cancel()
+    shutdown_task.cancel()
+    await asyncio.gather(bot_task, shutdown_task, return_exceptions=True)
+    logger.info("MTF Pullback Bot 종료")
+
+
+if __name__ == "__main__":
+    asyncio.run(main())