Clean up the PromptKit upgrade

internal/framework/pipeline/runner.go

@@ -829,22 +829,12 @@ func mergeLLMProfileManifests(sources ...[]artifacts.LLMProfileManifest) []artif
 	merged := make(map[string]artifacts.LLMProfileManifest)
 	for _, source := range sources {
 		for _, profile := range source {
-			id := strings.TrimSpace(profile.ID)
-			provider := strings.TrimSpace(profile.Provider)
-			model := strings.TrimSpace(profile.Model)
-			backendID := strings.TrimSpace(profile.BackendID)
-			reasoningEffort := strings.TrimSpace(profile.ReasoningEffort)
-			key := id + "\x00" + provider + "\x00" + model + "\x00" + backendID + "\x00" + reasoningEffort
+			profile = profile.Normalized()
+			key := profile.IdentityKey()
 			if _, exists := merged[key]; exists {
 				continue
 			}
-			merged[key] = artifacts.LLMProfileManifest{
-				ID:              id,
-				Provider:        provider,
-				Model:           model,
-				BackendID:       backendID,
-				ReasoningEffort: reasoningEffort,
-			}
+			merged[key] = profile
 		}
 	}
 	if len(merged) == 0 {