stale_push_wlin: 按Dad确认流程重构推送逻辑

1. 加重评冷却（4小时）— 查holding_strategies.updated_at
2. 修zone_notes早退bug — 有区间说明时不静默退出
3. zone_notes冷却30分→4小时（匹配重评冷却）
4. 标题自适应：有推荐→自选买入提醒 | 仅区间提醒→操作区间提醒
5. 区间说明格式：'进入操作区间，但重评结果:x'
6. 操作建议标题只在有可操作项时显示
7. has_actionable判定改用实际lines内容

data/candidate_pool.json

@@ -1,6 +1,6 @@
 {
-  "last_updated": "2026-07-08 15:41",
-  "total_candidates": 34,
+  "last_updated": "2026-07-09 10:32",
+  "total_candidates": 35,
   "sectors_analyzed_today": [
     "半导体",
     "金属新材料",
@@ -1352,18 +1352,18 @@
       "code": "002371",
       "name": "北方华创",
       "sector": "半导体",
-      "xiaoguo_score": 8.0,
-      "xiaoguo_reason": "平台型半导体设备龙头，覆盖刻蚀/沉积/清洗等全环节，业绩确定性高。板块资金净流入主力承接标的，估值处于历史中低位区间。",
+      "xiaoguo_score": 8,
+      "xiaoguo_reason": "半导体设备平台型龙头，订单饱满且国产替代核心受益者，技术面处于箱体震荡下沿，具备较高安全边际与弹性。",
       "xiaoguo_strategy": {
-        "entry_range": "295-305元",
-        "stop_loss": "282元",
-        "target": "340-355元"
+        "entry_range": "280-290元",
+        "stop_loss": "265元",
+        "target": "330-350元"
       },
-      "verified_price": 795.78,
-      "verified_change": -0.97,
+      "verified_price": 826.0,
+      "verified_change": 2.95,
       "added_at": "2026-07-07 12:12",
-      "last_updated": "2026-07-07 13:19",
-      "num_observations": 2,
+      "last_updated": "2026-07-09 10:07",
+      "num_observations": 3,
       "score_history": [
         {
           "date": "2026-07-07 12:12",
@@ -1372,6 +1372,10 @@
         {
           "date": "2026-07-07 13:19",
           "score": 8.0
+        },
+        {
+          "date": "2026-07-09 10:07",
+          "score": 8
         }
       ],
       "zhiwei_star": null,
@@ -1388,18 +1392,18 @@
       "code": "688012",
       "name": "中微公司",
       "sector": "半导体",
-      "xiaoguo_score": 8.5,
-      "xiaoguo_reason": "刻蚀设备国产替代核心标的，订单饱满，AI/HBM扩产直接受益。技术面回踩关键支撑位获资金承接，机构持仓集中。",
+      "xiaoguo_score": 7.5,
+      "xiaoguo_reason": "刻蚀设备全球竞争力强，受益晶圆厂扩产与先进制程突破，短期随板块回调至支撑位，风险收益比合理。",
       "xiaoguo_strategy": {
-        "entry_range": "175-182元",
-        "stop_loss": "168元",
-        "target": "205-215元"
+        "entry_range": "180-185元",
+        "stop_loss": "170元",
+        "target": "210-220元"
       },
-      "verified_price": 414.06,
-      "verified_change": -1.41,
+      "verified_price": 438.5,
+      "verified_change": 3.66,
       "added_at": "2026-07-07 12:12",
-      "last_updated": "2026-07-07 13:19",
-      "num_observations": 2,
+      "last_updated": "2026-07-09 10:07",
+      "num_observations": 3,
       "score_history": [
         {
           "date": "2026-07-07 12:12",
@@ -1408,6 +1412,10 @@
         {
           "date": "2026-07-07 13:19",
           "score": 8.5
+        },
+        {
+          "date": "2026-07-09 10:07",
+          "score": 7.5
         }
       ],
       "zhiwei_star": null,
@@ -1579,6 +1587,38 @@
       "drop_reason": null,
       "trend_warning": false,
       "trend_note": ""
+    },
+    {
+      "code": "603986",
+      "name": "兆易创新",
+      "sector": "半导体",
+      "xiaoguo_score": 7,
+      "xiaoguo_reason": "存储与MCU双轮驱动，消费电子复苏与车规需求拉动业绩拐点，技术面缩量企稳，适合波段操作。",
+      "xiaoguo_strategy": {
+        "entry_range": "75-80元",
+        "stop_loss": "70元",
+        "target": "95-100元"
+      },
+      "verified_price": 642.95,
+      "verified_change": 6.6,
+      "added_at": "2026-07-09 10:07",
+      "last_updated": "2026-07-09 10:07",
+      "num_observations": 1,
+      "score_history": [
+        {
+          "date": "2026-07-09 10:07",
+          "score": 7
+        }
+      ],
+      "zhiwei_star": null,
+      "zhiwei_reviewed": false,
+      "zhiwei_reviewed_at": null,
+      "promoted": false,
+      "promoted_at": null,
+      "dropped": false,
+      "drop_reason": null,
+      "trend_warning": false,
+      "trend_note": ""
     }
   ]
 }