feat: improve gas station management workflow

backend/api/internal/logic/common/resource.go

@@ -386,9 +386,8 @@ func ResourceResponse(value any) any {
 	return stripInternalIDs(decoded)
 }
 
-// PublicResourceResponse additionally resolves persisted relation keys into
-// their public identities. It is used by list/detail endpoints so an edit form
-// can round-trip the relation without ever receiving a surrogate database ID.
+// PublicResourceResponse preserves a resource's own ID for administrative
+// display while resolving and removing persistence-only relation IDs.
 func PublicResourceResponse(value any) (any, error) {
 	encoded, err := json.Marshal(value)
 	if err != nil {
@@ -450,7 +449,7 @@ type relationIdentityRecord struct {
 
 func projectRelationIdentities(value any) (any, error) {
 	groups := map[string]*relationIdentityGroup{}
-	collectRelationIdentityReferences(value, groups)
+	collectRelationIdentityReferences(value, groups, true)
 	groupKeys := make([]string, 0, len(groups))
 	for key := range groups {
 		groupKeys = append(groupKeys, key)
@@ -477,12 +476,14 @@ func projectRelationIdentities(value any) (any, error) {
 	return value, nil
 }
 
-func collectRelationIdentityReferences(value any, groups map[string]*relationIdentityGroup) {
+func collectRelationIdentityReferences(value any, groups map[string]*relationIdentityGroup, preserveRecordID bool) {
 	switch data := value.(type) {
 	case map[string]any:
 		for key, item := range data {
 			if key == "id" {
-				delete(data, key)
+				if !preserveRecordID {
+					delete(data, key)
+				}
 				continue
 			}
 			if strings.HasSuffix(key, "_id") {
@@ -515,11 +516,11 @@ func collectRelationIdentityReferences(value any, groups map[string]*relationIde
 				delete(data, key)
 				continue
 			}
-			collectRelationIdentityReferences(item, groups)
+			collectRelationIdentityReferences(item, groups, false)
 		}
 	case []any:
 		for _, item := range data {
-			collectRelationIdentityReferences(item, groups)
+			collectRelationIdentityReferences(item, groups, preserveRecordID)
 		}
 	}
 }