feat(xai): 为xAI渠道添加/v1/responses支持 (#2897)

* feat(xai): 为xAI渠道添加/v1/responses支持

* Add video generation model to constants

* fix: 修正先前更改中对于grok-3-mini的思考预算和"-search"设计

relay/channel/xai/constants.go

@@ -1,20 +1,32 @@
 package xai
 
 var ModelList = []string{
-	// grok-4
-	"grok-4", "grok-4-0709", "grok-4-0709-search",
-	// grok-3
-	"grok-3-beta", "grok-3-mini-beta",
-	// grok-3 mini
-	"grok-3-fast-beta", "grok-3-mini-fast-beta",
-	// extend grok-3-mini reasoning
-	"grok-3-mini-beta-high", "grok-3-mini-beta-low", "grok-3-mini-beta-medium",
-	"grok-3-mini-fast-beta-high", "grok-3-mini-fast-beta-low", "grok-3-mini-fast-beta-medium",
-	// image model
-	"grok-2-image",
-	// legacy models
-	"grok-2", "grok-2-vision",
-	"grok-beta", "grok-vision-beta",
+	// language models
+	"grok-4-1-fast-reasoning",
+	"grok-4-1-fast-non-reasoning",
+	"grok-code-fast-1",
+	"grok-4-fast-reasoning",
+	"grok-4-fast-non-reasoning",
+	"grok-4-0709",
+	"grok-3-mini",
+	"grok-3",
+	"grok-2-vision-1212",
+	// search variants
+	"grok-4-1-fast-reasoning-search",
+	"grok-4-1-fast-non-reasoning-search",
+	"grok-4-fast-reasoning-search",
+	"grok-4-fast-non-reasoning-search",
+	"grok-4-0709-search",
+	"grok-3-mini-search",
+	"grok-3-search",
+	// grok-3-mini reasoning effort variants
+	"grok-3-mini-high", "grok-3-mini-low",
+	// image generation models
+	"grok-imagine-image-pro",
+	"grok-imagine-image",
+	"grok-2-image-1212",
+	// video generation model
+	"grok-imagine-video",
 }
 
 var ChannelName = "xai"