模型定价: 一致性检查与提示(渠道可用模型应全部纳入定价)

- /admin/models 返回每模型 used/needs_pricing/denied + summary(total/unpriced/missing)
- missing 检测孤儿绑定(渠道提供但目录缺失)
- 模型定价页: 缺失警告、在用未定价提示、已禁止/未定价徽章

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

server/internal/api/admin_models.go

@@ -1,6 +1,7 @@
 package api
 
 import (
+	"encoding/json"
 	"errors"
 	"net/http"
 	"strconv"
@@ -11,13 +12,17 @@ import (
 	"gorm.io/gorm"
 )
 
-// AdminModels GET /api/v1/admin/models — 模型列表（含价格与渠道绑定）。
+// AdminModels GET /api/v1/admin/models — 模型列表（含价格、渠道绑定、定价/禁止状态）。
 func (h *Handler) AdminModels(c *gin.Context) {
 	var ms []store.Model
 	if err := h.a.DB.Order("sort ASC, id ASC").Find(&ms).Error; err != nil {
 		resp.Fail(c, http.StatusInternalServerError, "failed to load models")
 		return
 	}
+
+	// 全局模型限制策略
+	allow, deny := h.modelPolicyConfig()
+
 	out := make([]gin.H, 0, len(ms))
 	for _, m := range ms {
 		var bindings []store.ChannelModelBinding
@@ -29,13 +34,79 @@ func (h *Handler) AdminModels(c *gin.Context) {
 				"upstream_model": b.UpstreamModel, "weight": b.Weight,
 			})
 		}
+		used := len(bindings) > 0
+		needsPricing := used && m.InputPrice == 0 && m.OutputPrice == 0 && m.CacheReadPrice == 0
+		denied := containsStr(deny, m.Name) || (len(allow) > 0 && !containsStr(allow, m.Name))
 		out = append(out, gin.H{
 			"id": m.ID, "name": m.Name, "display_name": m.DisplayName,
 			"input_price": m.InputPrice, "output_price": m.OutputPrice, "cache_read_price": m.CacheReadPrice,
 			"enabled": m.Enabled, "sort": m.Sort, "channels": chs,
+			"used": used, "needs_pricing": needsPricing, "denied": denied,
 		})
 	}
-	resp.OK(c, gin.H{"items": out})
+
+	// 渠道提供了但目录中缺失的模型（孤儿绑定，数据不一致时出现）
+	var orphans []struct {
+		ChannelName string
+		ModelID     uint64
+	}
+	h.a.DB.Raw(`SELECT c.name as channel_name, b.model_id
+		FROM channel_model_bindings b
+		LEFT JOIN models m ON m.id = b.model_id
+		LEFT JOIN channels c ON c.id = b.channel_id
+		WHERE m.id IS NULL`).Scan(&orphans)
+	missing := make([]gin.H, 0, len(orphans))
+	for _, o := range orphans {
+		missing = append(missing, gin.H{"channel": o.ChannelName, "model_id": o.ModelID})
+	}
+
+	// 在用但未定价的模型数（渠道已提供、需定价）
+	unpriced := 0
+	{
+		var usedBindings []struct {
+			ModelID uint64
+		}
+		h.a.DB.Model(&store.ChannelModelBinding{}).Distinct("model_id").Scan(&usedBindings)
+		usedIDs := map[uint64]bool{}
+		for _, u := range usedBindings {
+			usedIDs[u.ModelID] = true
+		}
+		for _, m := range ms {
+			if usedIDs[m.ID] && m.InputPrice == 0 && m.OutputPrice == 0 && m.CacheReadPrice == 0 {
+				unpriced++
+			}
+		}
+	}
+
+	resp.OK(c, gin.H{
+		"items": out,
+		"summary": gin.H{
+			"total":        len(ms),
+			"unpriced":     unpriced,
+			"missing":      missing,
+			"denied_count": len(deny),
+		},
+	})
+}
+
+// modelPolicyConfig 读取全局模型允许/禁止列表。
+func (h *Handler) modelPolicyConfig() (allow, deny []string) {
+	var raw string
+	h.a.DB.Model(&store.SystemConfig{}).Where("key = ?", "model_allowlist").Pluck("value", &raw)
+	_ = json.Unmarshal([]byte(raw), &allow)
+	raw = ""
+	h.a.DB.Model(&store.SystemConfig{}).Where("key = ?", "model_denylist").Pluck("value", &raw)
+	_ = json.Unmarshal([]byte(raw), &deny)
+	return
+}
+
+func containsStr(list []string, s string) bool {
+	for _, v := range list {
+		if v == s {
+			return true
+		}
+	}
+	return false
 }
 
 // AdminCreateModel POST /api/v1/admin/models