feat(provider): add support for meituan longcat || feat(provider): add support for meituan longcat (#2883)

plugins/wasm-go/extensions/ai-proxy/provider/provider.go

@@ -133,6 +133,7 @@ const (
 	providerTypeVertex     = "vertex"
 	providerTypeTriton     = "triton"
 	providerTypeOpenRouter = "openrouter"
+	providerTypeLongcat    = "longcat"
 
 	protocolOpenAI   = "openai"
 	protocolOriginal = "original"
@@ -213,6 +214,7 @@ var (
 		providerTypeVertex:     &vertexProviderInitializer{},
 		providerTypeTriton:     &tritonProviderInitializer{},
 		providerTypeOpenRouter: &openrouterProviderInitializer{},
+		providerTypeLongcat:    &longcatProviderInitializer{},
 	}
 )
 
@@ -852,6 +854,9 @@ func (c *ProviderConfig) IsSupportedAPI(apiName ApiName) bool {
 }
 
 func (c *ProviderConfig) setDefaultCapabilities(capabilities map[string]string) {
+	if c.capabilities == nil {
+		c.capabilities = make(map[string]string)
+	}
 	for capability, path := range capabilities {
 		c.capabilities[capability] = path
 	}