fix: 全面系统修复 — delivery目标修正 + 脚本同步 + refresh_mtf_cache import修复 + clean_watchlist硬编码修复

修复清单：
- cron delivery修正：10个job从deliver=origin/all改为local，消除推送错误
- refresh_mtf_cache.py：替换strategy_lifecycle.PORTFOLIO_PATH导入为mofin_db直接读DB
- clean_watchlist.py：修复mo_data导入名错误和JSON硬编码路径
- MoFin/scripts/与profile scripts互相补全，双向sync到一致
- price_monitor.py：现金源从portfolio_summary表改为cash_log（Dad确认的现金权威）
- 更新watchlist.json加入000850华茂股份

scripts/data/accuracy_stats.json

@@ -0,0 +1,17 @@
+{
+  "updated_at": "2026-07-06T13:53:16.310069",
+  "phase1": {
+    "correct": 0,
+    "wrong": 0,
+    "pending": 0,
+    "accuracy_pct": 0.0
+  },
+  "phase2": {
+    "correct": 0,
+    "wrong": 0,
+    "pending": 0,
+    "accuracy_pct": 0.0
+  },
+  "total_evaluated": 0,
+  "details": []
+}