🔍 feat: Show matched model names & counts for non-exact model rules

Summary
-------
1. **Backend**
   • `model/model_meta.go`
     – Add `MatchedModels []string` and `MatchedCount int` (ignored by GORM) to expose matching details in API responses.
   • `controller/model_meta.go`
     – When processing prefix/suffix/contains rules in `fillModelExtra`, collect every matched model name, fill `MatchedModels`, and calculate `MatchedCount`.

2. **Frontend**
   • `web/src/components/table/models/ModelsColumnDefs.js`
     – Import `Tooltip`.
     – Enhance `renderNameRule` to:
       – Display tag text like “前缀 5个模型” for non-exact rules.
       – Show a tooltip listing all matched model names on hover.

Impact
------
Users now see the total number of concrete models aggregated under each prefix/suffix/contains rule and can inspect the exact list via tooltip, improving transparency in model management.

controller/model_meta.go

@@ -183,6 +183,9 @@ func fillModelExtra(m *model.Model) {
 	// 非精确匹配：计算并集
 	pricings := model.GetPricing()
 
+	// 匹配到的模型名称集合
+	matchedNames := make([]string, 0)
+
 	// 端点去重集合
 	endpointSet := make(map[constant.EndpointType]struct{})
 	// 已绑定渠道去重集合
@@ -206,6 +209,9 @@ func fillModelExtra(m *model.Model) {
 			continue
 		}
 
+		// 记录匹配到的模型名称
+		matchedNames = append(matchedNames, p.ModelName)
+
 		// 收集端点
 		for _, et := range p.SupportedEndpointTypes {
 			endpointSet[et] = struct{}{}
@@ -265,4 +271,8 @@ func fillModelExtra(m *model.Model) {
 	} else {
 		m.QuotaType = -1
 	}
+
+	// 设置匹配信息
+	m.MatchedModels = matchedNames
+	m.MatchedCount = len(matchedNames)
 }