币种标记标准化 + data-pipeline诊断文档

stale_detector: HK股价格输出加(HKD)标记，防止LLM混读CNY/HKD
per_stock_reassess: 写回decisions.json的HK股加上currency: HKD
docs/data-pipeline-diagnosis.md: 完整数据管道重构需求文档

避免建滔积层板CNY/HKD错配类问题复发

data/candidate_pool.json

@@ -1,6 +1,6 @@
 {
-  "last_updated": "2026-06-30 09:02",
-  "total_candidates": 0,
+  "last_updated": "2026-06-30 11:11",
+  "total_candidates": 3,
   "sectors_analyzed_today": [
     "半导体",
     "金属新材料",
@@ -343,6 +343,102 @@
       "drop_reason": "超7天未更新",
       "trend_warning": false,
       "trend_note": ""
+    },
+    {
+      "code": "688981",
+      "name": "中芯国际",
+      "sector": "半导体",
+      "xiaoguo_score": 8,
+      "xiaoguo_reason": "晶圆代工龙头，产能利用率回升，先进制程突破预期强，机构持仓集中，趋势走稳。",
+      "xiaoguo_strategy": {
+        "entry_range": "58.00-60.50",
+        "stop_loss": "55.00",
+        "target": "68.00"
+      },
+      "verified_price": 159.52,
+      "verified_change": 5.64,
+      "added_at": "2026-06-30 11:09",
+      "last_updated": "2026-06-30 11:09",
+      "num_observations": 1,
+      "score_history": [
+        {
+          "date": "2026-06-30 11:09",
+          "score": 8
+        }
+      ],
+      "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": ""
+    },
+    {
+      "code": "002371",
+      "name": "北方华创",
+      "sector": "半导体",
+      "xiaoguo_score": 9,
+      "xiaoguo_reason": "半导体设备核心标的，订单饱满，国产替代加速，业绩高增确定性高，资金持续加仓。",
+      "xiaoguo_strategy": {
+        "entry_range": "285.00-295.00",
+        "stop_loss": "270.00",
+        "target": "330.00"
+      },
+      "verified_price": 882.01,
+      "verified_change": 2.54,
+      "added_at": "2026-06-30 11:09",
+      "last_updated": "2026-06-30 11:09",
+      "num_observations": 1,
+      "score_history": [
+        {
+          "date": "2026-06-30 11:09",
+          "score": 9
+        }
+      ],
+      "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": ""
+    },
+    {
+      "code": "603501",
+      "name": "韦尔股份",
+      "sector": "半导体",
+      "xiaoguo_score": 7.5,
+      "xiaoguo_reason": "CIS龙头，消费电子复苏+汽车电子放量，估值处于历史中低位，弹性较大。",
+      "xiaoguo_strategy": {
+        "entry_range": "88.00-92.00",
+        "stop_loss": "83.00",
+        "target": "105.00"
+      },
+      "verified_price": 92.38,
+      "verified_change": 4.62,
+      "added_at": "2026-06-30 11:09",
+      "last_updated": "2026-06-30 11:09",
+      "num_observations": 1,
+      "score_history": [
+        {
+          "date": "2026-06-30 11:09",
+          "score": 7.5
+        }
+      ],
+      "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": ""
     }
   ]
 }