feat: add claude-haiku-4-5-20251001 model support

- Add model to Claude ModelList
- Add model ratio (0.5, $1/1M input tokens)
- Add completion ratio support (5x, $5/1M output tokens)
- Add cache read ratio (0.1, $0.10/1M tokens)
- Add cache write ratio (1.25, $1.25/1M tokens)

Model specs:
- Context window: 200K tokens
- Max output: 64K tokens
- Release date: October 1, 2025

relay/channel/claude/constants.go

@@ -9,6 +9,7 @@ var ModelList = []string{
 	"claude-3-opus-20240229",
 	"claude-3-haiku-20240307",
 	"claude-3-5-haiku-20241022",
+	"claude-haiku-4-5-20251001",
 	"claude-3-5-sonnet-20240620",
 	"claude-3-5-sonnet-20241022",
 	"claude-3-7-sonnet-20250219",

setting/ratio_setting/cache_ratio.go

@@ -43,6 +43,7 @@ var defaultCacheRatio = map[string]float64{
 	"claude-3-opus-20240229":              0.1,
 	"claude-3-haiku-20240307":             0.1,
 	"claude-3-5-haiku-20241022":           0.1,
+	"claude-haiku-4-5-20251001":           0.1,
 	"claude-3-5-sonnet-20240620":          0.1,
 	"claude-3-5-sonnet-20241022":          0.1,
 	"claude-3-7-sonnet-20250219":          0.1,
@@ -64,6 +65,7 @@ var defaultCreateCacheRatio = map[string]float64{
 	"claude-3-opus-20240229":              1.25,
 	"claude-3-haiku-20240307":             1.25,
 	"claude-3-5-haiku-20241022":           1.25,
+	"claude-haiku-4-5-20251001":           1.25,
 	"claude-3-5-sonnet-20240620":          1.25,
 	"claude-3-5-sonnet-20241022":          1.25,
 	"claude-3-7-sonnet-20250219":          1.25,

setting/ratio_setting/model_ratio.go

@@ -137,6 +137,7 @@ var defaultModelRatio = map[string]float64{
 	"claude-2.1":                                4,     // $8 / 1M tokens
 	"claude-3-haiku-20240307":                   0.125, // $0.25 / 1M tokens
 	"claude-3-5-haiku-20241022":                 0.5,   // $1 / 1M tokens
+	"claude-haiku-4-5-20251001":                 0.5,   // $1 / 1M tokens
 	"claude-3-sonnet-20240229":                  1.5,   // $3 / 1M tokens
 	"claude-3-5-sonnet-20240620":                1.5,
 	"claude-3-5-sonnet-20241022":                1.5,
@@ -560,7 +561,7 @@ func getHardcodedCompletionModelRatio(name string) (float64, bool) {
 
 	if strings.Contains(name, "claude-3") {
 		return 5, true
-	} else if strings.Contains(name, "claude-sonnet-4") || strings.Contains(name, "claude-opus-4") {
+	} else if strings.Contains(name, "claude-sonnet-4") || strings.Contains(name, "claude-opus-4") || strings.Contains(name, "claude-haiku-4") {
 		return 5, true
 	} else if strings.Contains(name, "claude-instant-1") || strings.Contains(name, "claude-2") {
 		return 3, true