feat: 抽测风速改为用户可自定义次数（增删按钮）

- models.rs：新增 spot_check_count 字段（默认 5）
- db.rs：INSERT/SELECT 添加 spotcheckcount 列
- migrations/007：ALTER TABLE weather_data ADD spotcheckcount
- afterbody.js：使用 data.spotCheckCount 动态渲染抽测数据

src/db.rs

@@ -35,10 +35,10 @@ pub async fn insert_weather_data(pool: &PgPool, weather_data: &WeatherData, user
             atmosphericstability, suitabilitydegree, winddirection, averagewinddirection,
             winddirectionstandarddeviation, windspeed, averagewindspeed, windspeedsuitability,
             winddirectionsuitability, overallsuitability, inspectiontype, assignmentnumber,
-            calculatedwindspeed, hasspotcheckwindspeed, version, is_favorite
+            calculatedwindspeed, hasspotcheckwindspeed, spotcheckcount, version, is_favorite
         ) VALUES (
             $1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17, $18, $19,
-            $20, $21, $22, $23, $24, $25, $26, $27, $28, $29, $30, $31, $32, $33, $34, $35, $36, $37
+            $20, $21, $22, $23, $24, $25, $26, $27, $28, $29, $30, $31, $32, $33, $34, $35, $36, $37, $38
         ) RETURNING id
     "#;
 
@@ -85,6 +85,7 @@ pub async fn insert_weather_data(pool: &PgPool, weather_data: &WeatherData, user
         .bind(&weather_data.assignment_number)
         .bind(weather_data.calculated_wind_speed) // 这个本来就是 Option，无需修改
         .bind(weather_data.has_spot_check_wind_speed)
+        .bind(weather_data.spot_check_count)
         .bind(&weather_data.version)
         .bind(weather_data.is_favorite)
         .fetch_one(pool)
@@ -131,7 +132,7 @@ pub async fn get_weather_details(pool: &PgPool, weather_id: i32) -> Result<Weath
             wd.winddirectionstandarddeviation, wd.windspeed, wd.averagewindspeed,
             wd.windspeedsuitability, wd.winddirectionsuitability, wd.overallsuitability,
             wd.inspectiontype, wd.assignmentnumber, wd.calculatedwindspeed, wd.hasspotcheckwindspeed,
-            wd.is_favorite, u.openid, wd.version
+            wd.spotcheckcount, wd.is_favorite, u.openid, wd.version
         FROM weather_data wd
         JOIN users u ON wd.user_id = u.id
         WHERE wd.id = $1