apply copilot api type earlier in defaults setup

Author: joshbarrington

pkg/model/provider/provider.go

@@ -406,6 +406,9 @@ func applyProviderDefaults(cfg *latest.ModelConfig, customProviders map[string]l
 //
 // NOTE: max_tokens is NOT set here; see teamloader and runtime/model_switcher.
 func applyModelDefaults(cfg *latest.ModelConfig) {
+	// Set appropriate github copilot api_type.
+	applyGithubCopilotAPIType(cfg)
+
 	// Explicitly disabled → normalise to nil so providers never see it.
 	if cfg.ThinkingBudget.IsDisabled() {
 		cfg.ThinkingBudget = nil
@@ -422,9 +425,6 @@ func applyModelDefaults(cfg *latest.ModelConfig) {
 		return
 	}
 
-	// Set appropriate github copilot api_type.
-	applyGithubCopilotAPIType(cfg)
-
 	// No thinking_budget configured — only thinking-only models get a default.
 	switch providerType {
 	case "openai", "openai_chatcompletions", "openai_responses":