feat: include ETF strategies in monitor and register V7 in bridge

- DEFAULT_MONITOR_STRATEGIES now includes ALL strategies (stock + ETF)
  instead of excluding ETF strategies. The cmd_morning/evening/auto
  already route ETF strategies to the correct data pipeline via
  strategy_universe() and strategy_data_market().

- Register trend_rider_v7, v7_vt24, v7_vt32 in bridge.py STRATEGY_META
  so they appear in the stock-agent frontend via /api/strategies.

- Monitor now runs as a background daemon with logs written to
  logs/monitor.log (PYTHONUNBUFFERED=1, no tmux dependency).
  PID saved to logs/monitor.pid.

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

trader.py

@@ -231,10 +231,7 @@ MIXED_STRATEGY_EXTRA_TICKERS = {
     "trend_rider_v6_top10": sorted(set(ETF_UNIVERSE)),
 }
 
-DEFAULT_MONITOR_STRATEGIES = [
-    name for name in STRATEGY_REGISTRY
-    if name not in ETF_STRATEGY_UNIVERSES
-]
+DEFAULT_MONITOR_STRATEGIES = list(STRATEGY_REGISTRY.keys())
 
 
 def strategy_universe(market: str, strategy_name: str) -> tuple[list[str], str]: