fix: change Antigravity field from map to array to match remote models.json format

internal/registry/model_definitions.go

@@ -14,6 +14,13 @@ type AntigravityModelConfig struct {
 	MaxCompletionTokens int              `json:"max_completion_tokens,omitempty"`
 }
 
+// AntigravityModelEntry represents a single antigravity model entry in models.json.
+// Remote models.json uses an array format where each entry carries an id field.
+type AntigravityModelEntry struct {
+	ID string `json:"id"`
+	*AntigravityModelConfig
+}
+
 // staticModelsJSON mirrors the top-level structure of models.json.
 type staticModelsJSON struct {
 	Claude      []*ModelInfo                       `json:"claude"`
@@ -28,7 +35,7 @@ type staticModelsJSON struct {
 	Qwen        []*ModelInfo                       `json:"qwen"`
 	IFlow       []*ModelInfo                       `json:"iflow"`
 	Kimi        []*ModelInfo                       `json:"kimi"`
-	Antigravity map[string]*AntigravityModelConfig `json:"antigravity"`
+	Antigravity []*AntigravityModelEntry          `json:"antigravity"`
 }
 
 // GetClaudeModels returns the standard Claude model definitions.
@@ -92,15 +99,18 @@ func GetKimiModels() []*ModelInfo {
 }
 
 // GetAntigravityModelConfig returns static configuration for antigravity models.
-// Keys use upstream model names returned by the Antigravity models endpoint.
+// Keys use upstream model names (entry.ID) as returned by the Antigravity models endpoint.
 func GetAntigravityModelConfig() map[string]*AntigravityModelConfig {
 	data := getModels()
 	if len(data.Antigravity) == 0 {
 		return nil
 	}
 	out := make(map[string]*AntigravityModelConfig, len(data.Antigravity))
-	for k, v := range data.Antigravity {
-		out[k] = cloneAntigravityModelConfig(v)
+	for _, entry := range data.Antigravity {
+		if entry == nil || entry.ID == "" {
+			continue
+		}
+		out[entry.ID] = cloneAntigravityModelConfig(entry.AntigravityModelConfig)
 	}
 	return out
 }
@@ -223,11 +233,15 @@ func LookupStaticModelInfo(modelID string) *ModelInfo {
 	}
 
 	// Check Antigravity static config
-	if cfg := cloneAntigravityModelConfig(data.Antigravity[modelID]); cfg != nil {
-		return &ModelInfo{
-			ID:                  modelID,
-			Thinking:            cfg.Thinking,
-			MaxCompletionTokens: cfg.MaxCompletionTokens,
+	for _, entry := range data.Antigravity {
+		if entry != nil && entry.ID == modelID {
+			if cfg := cloneAntigravityModelConfig(entry.AntigravityModelConfig); cfg != nil {
+				return &ModelInfo{
+					ID:                  modelID,
+					Thinking:            cfg.Thinking,
+					MaxCompletionTokens: cfg.MaxCompletionTokens,
+				}
+			}
 		}
 	}
 

internal/registry/model_updater.go

@@ -180,19 +180,24 @@ func validateModelSection(section string, models []*ModelInfo) error {
 	return nil
 }
 
-func validateAntigravitySection(configs map[string]*AntigravityModelConfig) error {
-	if len(configs) == 0 {
+func validateAntigravitySection(entries []*AntigravityModelEntry) error {
+	if len(entries) == 0 {
 		return fmt.Errorf("antigravity section is empty")
 	}
 
-	for modelID, cfg := range configs {
-		trimmedID := strings.TrimSpace(modelID)
+	seen := make(map[string]struct{}, len(entries))
+	for i, entry := range entries {
+		if entry == nil {
+			return fmt.Errorf("antigravity[%d] is null", i)
+		}
+		trimmedID := strings.TrimSpace(entry.ID)
 		if trimmedID == "" {
-			return fmt.Errorf("antigravity contains empty model id")
+			return fmt.Errorf("antigravity[%d] has empty id", i)
 		}
-		if cfg == nil {
-			return fmt.Errorf("antigravity[%q] is null", trimmedID)
+		if _, exists := seen[trimmedID]; exists {
+			return fmt.Errorf("antigravity contains duplicate model id %q", trimmedID)
 		}
+		seen[trimmedID] = struct{}{}
 	}
 	return nil
 }