策略质量过滤：信义光能不应被推荐

修复：stale_push_wlin 没有检查 timing_signal 和 sector_context

信义光能(00968)被推荐的原因：
  timing_signal='行业偏弱'  sector='房地产开发大跌-294%'
  RR=7.2看起来很高，但趋势完全空头且行业崩塌
  → 原代码只查RR>=3+价格在买入区，没查信号质量

新增两条过滤：
1. timing_signal含[偏弱/弱势/观望/卖出/回避] → 跳过
2. sector_context含'大跌' → 跳过（行业崩时不推荐）

实测：加过滤前7只，加后1只（仅药明康德）

data/price_history.json

@@ -108,7 +108,7 @@
       "date": "2026-06-24",
       "high": 88.32,
       "low": 82.78,
-      "close": 83.44
+      "close": 83.38
     }
   ],
   "00700": [
@@ -164,7 +164,7 @@
       "date": "2026-06-24",
       "high": 439.8,
       "low": 412.6,
-      "close": 428.2
+      "close": 429.4
     }
   ],
   "000700": [
@@ -220,7 +220,7 @@
       "date": "2026-06-24",
       "high": 15.6,
       "low": 14.3,
-      "close": 14.56
+      "close": 14.5
     }
   ],
   "001309": [
@@ -276,7 +276,7 @@
       "date": "2026-06-24",
       "high": 816.88,
       "low": 706.0,
-      "close": 808.46
+      "close": 803.99
     }
   ],
   "00968": [
@@ -332,7 +332,7 @@
       "date": "2026-06-24",
       "high": 2.26,
       "low": 1.93,
-      "close": 2.01
+      "close": 1.99
     }
   ],
   "00981": [
@@ -388,7 +388,7 @@
       "date": "2026-06-24",
       "high": 86.45,
       "low": 76.5,
-      "close": 84.45
+      "close": 84.6
     }
   ],
   "01070": [
@@ -444,7 +444,7 @@
       "date": "2026-06-24",
       "high": 13.47,
       "low": 12.55,
-      "close": 13.04
+      "close": 13.12
     }
   ],
   "01088": [
@@ -500,7 +500,7 @@
       "date": "2026-06-24",
       "high": 43.14,
       "low": 41.26,
-      "close": 41.94
+      "close": 41.86
     }
   ],
   "01211": [
@@ -556,7 +556,7 @@
       "date": "2026-06-24",
       "high": 78.3,
       "low": 74.2,
-      "close": 75.9
+      "close": 76.1
     }
   ],
   "01478": [
@@ -612,7 +612,7 @@
       "date": "2026-06-24",
       "high": 8.54,
       "low": 7.51,
-      "close": 7.71
+      "close": 7.7
     }
   ],
   "01888": [
@@ -668,7 +668,7 @@
       "date": "2026-06-24",
       "high": 97.4,
       "low": 83.7,
-      "close": 94.45
+      "close": 94.6
     }
   ],
   "02202": [
@@ -780,7 +780,7 @@
       "date": "2026-06-24",
       "high": 55.5,
       "low": 52.3,
-      "close": 52.8
+      "close": 52.7
     }
   ],
   "02359": [
@@ -836,7 +836,7 @@
       "date": "2026-06-24",
       "high": 145.0,
       "low": 130.0,
-      "close": 142.5
+      "close": 142.8
     }
   ],
   "02388": [
@@ -948,7 +948,7 @@
       "date": "2026-06-24",
       "high": 30.56,
       "low": 28.06,
-      "close": 28.34
+      "close": 28.36
     }
   ],
   "06160": [
@@ -1284,7 +1284,7 @@
       "date": "2026-06-24",
       "high": 68.8,
       "low": 65.74,
-      "close": 66.52
+      "close": 66.47
     }
   ],
   "300548": [
@@ -2316,7 +2316,7 @@
       "date": "2026-06-24",
       "high": 745.2,
       "low": 660.01,
-      "close": 704.0
+      "close": 704.28
     }
   ],
   "688802": [
@@ -2466,7 +2466,7 @@
       "date": "2026-06-24",
       "high": 5.38,
       "low": 4.86,
-      "close": 5.06
+      "close": 5.05
     }
   ],
   "688630": [
@@ -2550,7 +2550,7 @@
       "date": "2026-06-24",
       "high": 113.99,
       "low": 94.79,
-      "close": 100.33
+      "close": 100.14
     }
   ],
   "300308": [
@@ -2610,7 +2610,7 @@
       "date": "2026-06-24",
       "high": 52.43,
       "low": 49.03,
-      "close": 49.12
+      "close": 49.09
     }
   ],
   "002171": [