Add immutable profile catalog loading

internal/profile/filesystem_repository.go

@@ -164,8 +164,9 @@ type profileMatch struct {
 }
 
 type profileFileMetadata struct {
-	ids          []string
-	hasRawAPIKey bool
+	ids            []string
+	hasRawAPIKey   bool
+	explicitFields []string
 }
 
 func readProfileFileMetadata(data []byte) (profileFileMetadata, error) {
@@ -206,6 +207,7 @@ func profileMetadataFromNode(node *yaml.Node) profileFileMetadata {
 	for i := 0; i+1 < len(mapping.Content); i += 2 {
 		key := mapping.Content[i]
 		value := mapping.Content[i+1]
+		metadata.explicitFields = append(metadata.explicitFields, key.Value)
 		switch key.Value {
 		case "id":
 			metadata.ids = append(metadata.ids, strings.TrimSpace(value.Value))
@@ -228,6 +230,7 @@ func (m profileFileMetadata) matchesID(id string) bool {
 func (m *profileFileMetadata) merge(other profileFileMetadata) {
 	m.ids = append(m.ids, other.ids...)
 	m.hasRawAPIKey = m.hasRawAPIKey || other.hasRawAPIKey
+	m.explicitFields = append(m.explicitFields, other.explicitFields...)
 }
 
 func decodeProfile(data []byte) (*domain.ExecutionProfile, error) {