整改一期：发布这条链路先跑顺

四条改动都在"发布一个代喂任务"这条路上：

定位拿不到不再把人卡死。地址可以不带坐标保存，界面标成"未核验定位"，
这条地址的打卡照常，只是不比对距离——总比逼着用户放弃发布要好。客户端
另外给了两条退路：去系统设置开权限，或者地图选点。

价格从写死的 30 元改成服务端按物种、城市、每次时长算的推荐价，规则放在
配置里，运营改一次不用等发版；用户改过之后就以他填的为准，不再被覆盖。

发布与支付并成一步：底部常驻"合计 ¥x = n 次 × ¥y"，主按钮是"支付并发布"。
没付成的任务留在"我的任务"里能接着付，超过 24 小时由后台关掉，不再变成
既看不见又删不掉的孤儿。

选宠物换成带头像的卡片，缺免疫记录或照片的当场标出来，不用等提交才知道。

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

im/backend/internal/app/pet_feed.go

@@ -48,6 +48,7 @@ type feedTaskView struct {
 	TotalVisits  int      `json:"totalVisits"`
 	Done         int      `json:"completedVisits"`
 	Items        []string `json:"items"`
+	Located      bool     `json:"addressLocated"`
 	Mine         bool     `json:"mine"`
 	IsSitter     bool     `json:"isSitter"`
 	CreatedAt    string   `json:"createdAt"`
@@ -98,10 +99,9 @@ func (a *App) createPetAddress(w http.ResponseWriter, r *http.Request) {
 		fail(w, http.StatusBadRequest, 20001, "地址内容过长")
 		return
 	}
-	if req.Latitude == 0 || req.Longitude == 0 {
-		fail(w, http.StatusBadRequest, 20001, "请先获取定位，打卡需要与地址比对")
-		return
-	}
+	// 定位可能因为权限、系统或没有地图 SDK 而拿不到。与其把人卡在这一步，
+	// 不如让他把地址存下来，并记住这条地址没有坐标：打卡照常，只是不做距离核验。
+	located := req.Latitude != 0 && req.Longitude != 0
 	// Door number and phone are encrypted at rest; only the coarse area is ever
 	// shown to people browsing the hall.
 	detail, err := a.encryptPhone(req.Detail)
@@ -122,19 +122,24 @@ func (a *App) createPetAddress(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 	}
+	var latitude, longitude any
+	if located {
+		latitude, longitude = req.Latitude, req.Longitude
+	}
 	result, err := a.db.ExecContext(r.Context(), `INSERT INTO pet_addresses(user_id,city_code,city_name,area_text,detail_cipher,contact_cipher,emergency_cipher,vet_hospital,latitude,longitude)
 		VALUES(?,?,?,?,?,?,?,?,?,?)`, current(r).ID, strings.TrimSpace(req.CityCode), strings.TrimSpace(req.CityName), req.AreaText,
-		detail, contact, emergency, req.VetHospital, req.Latitude, req.Longitude)
+		detail, contact, emergency, req.VetHospital, latitude, longitude)
 	if err != nil {
 		fail(w, http.StatusInternalServerError, 50001, "保存失败")
 		return
 	}
 	id, _ := result.LastInsertId()
-	reply(w, map[string]any{"id": id})
+	reply(w, map[string]any{"id": id, "located": located})
 }
 
 func (a *App) petAddresses(w http.ResponseWriter, r *http.Request) {
-	rows, err := a.db.QueryContext(r.Context(), `SELECT id,city_name,area_text FROM pet_addresses WHERE user_id=? ORDER BY id DESC`, current(r).ID)
+	rows, err := a.db.QueryContext(r.Context(), `SELECT id,city_code,city_name,area_text,latitude IS NOT NULL
+		FROM pet_addresses WHERE user_id=? AND LENGTH(detail_cipher)>0 ORDER BY id DESC`, current(r).ID)
 	if err != nil {
 		fail(w, http.StatusInternalServerError, 50001, "查询地址失败")
 		return
@@ -143,9 +148,12 @@ func (a *App) petAddresses(w http.ResponseWriter, r *http.Request) {
 	items := []map[string]any{}
 	for rows.Next() {
 		var id int64
-		var city, area string
-		if rows.Scan(&id, &city, &area) == nil {
-			items = append(items, map[string]any{"id": id, "cityName": city, "areaText": area})
+		var cityCode, city, area string
+		var located bool
+		if rows.Scan(&id, &cityCode, &city, &area, &located) == nil {
+			items = append(items, map[string]any{
+				"id": id, "cityCode": cityCode, "cityName": city, "areaText": area, "located": located,
+			})
 		}
 	}
 	reply(w, map[string]any{"items": items})
@@ -345,7 +353,7 @@ func (a *App) createFeedTask(w http.ResponseWriter, r *http.Request) {
 	reply(w, map[string]any{"id": taskID, "grossCent": gross, "platformFeeCent": fee, "payoutCent": payout, "totalVisits": totalVisits})
 }
 
-const feedTaskColumns = `t.id,t.owner_user_id,owner.nickname,t.pet_id,p.name,p.species,p.avatar_url,addr.city_name,addr.area_text,
+const feedTaskColumns = `t.id,t.owner_user_id,owner.nickname,t.pet_id,p.name,p.species,p.avatar_url,addr.city_name,addr.area_text,addr.latitude IS NOT NULL,
 	t.start_date,t.end_date,t.visits_per_day,t.min_minutes,t.price_cent,t.gross_cent,t.payout_cent,t.note,t.status,
 	COALESCE(t.sitter_user_id,0),COALESCE(sitter.nickname,''),COALESCE(t.conversation_id,0),t.applications_count,t.total_visits,t.completed_visits,t.created_at`
 
@@ -358,7 +366,7 @@ func (a *App) scanFeedTasks(ctx context.Context, rows *sql.Rows, viewer int64) [
 		var start, end time.Time
 		var created time.Time
 		if rows.Scan(&item.ID, &item.OwnerUserID, &item.OwnerName, &item.PetID, &item.PetName, &item.Species, &item.PetAvatar,
-			&item.CityName, &item.AreaText, &start, &end, &item.VisitsPerDay, &item.MinMinutes, &item.PriceCent,
+			&item.CityName, &item.AreaText, &item.Located, &start, &end, &item.VisitsPerDay, &item.MinMinutes, &item.PriceCent,
 			&item.GrossCent, &item.PayoutCent, &item.Note, &item.Status, &item.SitterUserID, &item.SitterName,
 			&item.Conversation, &item.Applications, &item.TotalVisits, &item.Done, &created) != nil {
 			continue