✨ feat(pricing): add default vendor icons with LobeHub color support

- Add defaultVendorIcons mapping for major AI vendors
- Update getOrCreateVendor to automatically set vendor icons
- Add getDefaultVendorIcon helper function
- Support LobeHub icons Color variants (e.g., Claude.Color, Gemini.Color)
- Fix issue where default vendors were created without icons

This ensures that when new models are encountered, their vendors
will be created with appropriate colored icons for better UI display.

Affected vendors include:
- OpenAI, Anthropic, Google, Moonshot, 智谱, 阿里巴巴
- DeepSeek, MiniMax, 百度, 讯飞, 腾讯, Cohere
- Cloudflare, 360, 零一万物, Jina, Mistral, xAI
- Meta, 字节跳动, 快手, 即梦, Vidu, Microsoft/Azure

model/pricing_default.go

@@ -37,6 +37,36 @@ var defaultVendorRules = map[string]string{
 	"vidu":     "Vidu",
 }
 
+// 供应商默认图标映射
+var defaultVendorIcons = map[string]string{
+	"OpenAI":     "OpenAI",
+	"Anthropic":  "Claude.Color",
+	"Google":     "Gemini.Color",
+	"Moonshot":   "Moonshot",
+	"智谱":         "Zhipu.Color",
+	"阿里巴巴":       "Qwen.Color",
+	"DeepSeek":   "DeepSeek.Color",
+	"MiniMax":    "Minimax.Color",
+	"百度":         "Wenxin.Color",
+	"讯飞":         "Spark.Color",
+	"腾讯":         "Hunyuan.Color",
+	"Cohere":     "Cohere.Color",
+	"Cloudflare": "Cloudflare.Color",
+	"360":        "Ai360.Color",
+	"零一万物":       "Yi.Color",
+	"Jina":       "Jina",
+	"Mistral":    "Mistral.Color",
+	"xAI":        "XAI",
+	"Meta":       "Ollama",
+	"字节跳动":       "Doubao.Color",
+	"快手":         "Kling.Color",
+	"即梦":         "Jimeng.Color",
+	"Vidu":       "Vidu",
+	"微软":         "AzureAI",
+	"Microsoft":  "AzureAI",
+	"Azure":      "AzureAI",
+}
+
 // initDefaultVendorMapping 简化的默认供应商映射
 func initDefaultVendorMapping(metaMap map[string]*Model, vendorMap map[int]*Vendor, enableAbilities []AbilityWithChannel) {
 	for _, ability := range enableAbilities {
@@ -78,6 +108,7 @@ func getOrCreateVendor(vendorName string, vendorMap map[int]*Vendor) int {
 	newVendor := &Vendor{
 		Name:   vendorName,
 		Status: 1,
+		Icon:   getDefaultVendorIcon(vendorName),
 	}
 
 	if err := newVendor.Insert(); err != nil {
@@ -87,3 +118,11 @@ func getOrCreateVendor(vendorName string, vendorMap map[int]*Vendor) int {
 	vendorMap[newVendor.Id] = newVendor
 	return newVendor.Id
 }
+
+// 获取供应商默认图标
+func getDefaultVendorIcon(vendorName string) string {
+	if icon, exists := defaultVendorIcons[vendorName]; exists {
+		return icon
+	}
+	return ""
+}