fix: gatherPlace/dismissalPlace changed to Amap JSON object

changelogs/2026-04/2026-04-16_product-v2_gather-dismiss-per-day.md

@@ -22,19 +22,31 @@ PUT /admin/product/item/{id}/itinerary
 
 ### 现在
 
+⚠️ **字段类型改为JSON对象**（存高德行政区搜索返回的完整数据）
+
 ```
 PUT /admin/product/item/{id}/itinerary
 {
   "days": [{
     "dayNumber": 1,
-    "gatherPlace": "海拉尔",     ← 每天独立
-    "dismissalPlace": "额尔古纳", ← 每天独立
+    "gatherPlace": {
+      "name": "海拉尔区",
+      "adcode": "150702",
+      "center": "119.736279,49.212189",
+      "level": "district"
+    },
+    "dismissalPlace": {
+      "name": "额尔古纳市",
+      "adcode": "150784",
+      "center": "120.180506,50.243102",
+      "level": "city"
+    },
     "dayTitle": "D1",
     "nodes": [...]
   }, {
     "dayNumber": 2,
-    "gatherPlace": "额尔古纳",
-    "dismissalPlace": "满洲里",
+    "gatherPlace": {"name": "额尔古纳市", "adcode": "150784", "center": "120.18,50.24", "level": "city"},
+    "dismissalPlace": {"name": "满洲里市", "adcode": "150781", "center": "117.45,49.59", "level": "city"},
     ...
   }]
 }
@@ -46,8 +58,8 @@ PUT /admin/product/item/{id}/itinerary
 
 | 字段 | 类型 | 说明 |
 |------|------|------|
-| `gatherPlace` | String | 当日集合地 |
-| `dismissalPlace` | String | 当日解散地 |
+| `gatherPlace` | Object | 当日集合地 `{name, adcode, center, level}` |
+| `dismissalPlace` | Object | 当日解散地 `{name, adcode, center, level}` |
 | `dailyMileage` | BigDecimal | 当日里程(km)，自动计算 |
 | `dailyDuration` | Integer | 当日驾车时长(分钟)，自动计算 |