feat(relink): accept CivitArchive URLs when linking models

locales/de.json

@@ -963,7 +963,7 @@
             }
         },
         "duplicates": {
-            "finding": "[TODO: Translate] Scanning for duplicate recipes...",
+            "finding": "Suche nach doppelten Rezepten...",
             "found": "{count} Duplikat-Gruppen gefunden",
             "noGroups": "Keine Duplikat-Gruppen mit dem aktuellen Abgleichskriterium gefunden",
             "keepLatest": "Neueste Versionen behalten",
@@ -1422,13 +1422,14 @@
             },
             "proceedText": "Fahren Sie nur fort, wenn Sie sicher sind, dass Sie das wollen.",
             "urlLabel": "Civitai-Modell-URL:",
-            "urlPlaceholder": "https://civitai.com/models/649516/model-name?modelVersionId=726676",
+            "urlPlaceholder": "https://civitai.com/models/12345/model-name?modelVersionId=67890",
             "helpText": {
-                "title": "Fügen Sie eine beliebige Civitai-Modell-URL ein. Unterstützte Formate:",
+                "title": "Fügen Sie eine beliebige Civitai- oder CivitArchive-Modell-URL ein. Unterstützte Formate:",
-                "format1": "https://civitai.com/models/649516",
+                "format1": "https://civitai.com/models/12345",
-                "format2": "https://civitai.com/models/649516?modelVersionId=726676",
+                "format2": "https://civitai.com/models/12345?modelVersionId=67890",
-                "format3": "https://civitai.com/models/649516/model-name?modelVersionId=726676",
+                "format3": "https://civitai.com/models/12345/model-name?modelVersionId=67890",
-                "note": "Hinweis: Wenn keine modelVersionId angegeben ist, wird die neueste Version verwendet."
+                "note": "Hinweis: Wenn keine modelVersionId angegeben ist, wird die neueste Version verwendet.",
+                "format4": "https://civarchive.com/models/12345 (CivitArchive)"
             },
             "confirmAction": "Neu-Verknüpfung bestätigen"
         },
@@ -2225,6 +2226,7 @@
             "relinkFailed": "Fehler: {message}",
             "linkHfSuccess": "Modell erfolgreich mit HuggingFace verknüpft",
             "linkHfFailed": "Fehler: {message}",
+            "linkCivArchSuccess": "Modell erfolgreich über CivitArchive neu verknüpft",
             "fetchMetadataFirst": "Bitte rufen Sie zuerst Metadaten von CivitAI ab",
             "noCivitaiInfo": "Keine CivitAI-Informationen verfügbar",
             "missingHash": "Modell-Hash nicht verfügbar"

locales/en.json

@@ -864,8 +864,8 @@
     },
     "navigation": {
       "label": "Recipe navigation",
-      "previousWithShortcut": "Previous recipe (\u2190)",
+      "previousWithShortcut": "Previous recipe (←)",
-      "nextWithShortcut": "Next recipe (\u2192)"
+      "nextWithShortcut": "Next recipe (→)"
     },
     "workflow": {
       "sendWorkflow": "Send Workflow to ComfyUI",
@@ -1422,13 +1422,14 @@
       },
       "proceedText": "Only proceed if you're sure this is what you want.",
       "urlLabel": "Civitai Model URL:",
-      "urlPlaceholder": "https://civitai.com/models/649516/model-name?modelVersionId=726676 or https://civitai.red/models/649516/model-name?modelVersionId=726676",
+      "urlPlaceholder": "https://civitai.com/models/12345/model-name?modelVersionId=67890 or https://civitai.red/models/12345/model-name?modelVersionId=67890",
       "helpText": {
-        "title": "Paste any Civitai model URL from civitai.com or civitai.red. Supported formats:",
+        "title": "Paste any Civitai or CivitArchive model URL. Supported formats:",
-        "format1": "https://civitai.com/models/649516",
+        "format1": "https://civitai.com/models/12345",
-        "format2": "https://civitai.com/models/649516?modelVersionId=726676",
+        "format2": "https://civitai.com/models/12345?modelVersionId=67890",
-        "format3": "https://civitai.com/models/649516/model-name?modelVersionId=726676",
+        "format3": "https://civitai.com/models/12345/model-name?modelVersionId=67890",
-        "note": "Note: If no modelVersionId is provided, the latest version will be used."
+        "note": "Note: If no modelVersionId is provided, the latest version will be used.",
+        "format4": "https://civarchive.com/models/12345 (CivitArchive)"
       },
       "confirmAction": "Confirm Re-link"
     },
@@ -2225,6 +2226,7 @@
       "relinkFailed": "Error: {message}",
       "linkHfSuccess": "Model successfully linked to HuggingFace",
       "linkHfFailed": "Error: {message}",
+      "linkCivArchSuccess": "Model successfully re-linked via CivitArchive",
       "fetchMetadataFirst": "Please fetch metadata from CivitAI first",
       "noCivitaiInfo": "No CivitAI information available",
       "missingHash": "Model hash not available"

locales/es.json

@@ -963,7 +963,7 @@
             }
         },
         "duplicates": {
-            "finding": "[TODO: Translate] Scanning for duplicate recipes...",
+            "finding": "Buscando recetas duplicadas...",
             "found": "Se encontraron {count} grupos de duplicados",
             "noGroups": "No se encontraron grupos de duplicados con el criterio de coincidencia actual",
             "keepLatest": "Mantener versiones más recientes",
@@ -1422,13 +1422,14 @@
             },
             "proceedText": "Solo procede si estás seguro de que esto es lo que quieres.",
             "urlLabel": "URL del modelo de Civitai:",
-            "urlPlaceholder": "https://civitai.com/models/649516/model-name?modelVersionId=726676",
+            "urlPlaceholder": "https://civitai.com/models/12345/model-name?modelVersionId=67890",
             "helpText": {
-                "title": "Pega cualquier URL de modelo de Civitai. Formatos soportados:",
+                "title": "Pega cualquier URL de modelo de Civitai o CivitArchive. Formatos soportados:",
-                "format1": "https://civitai.com/models/649516",
+                "format1": "https://civitai.com/models/12345",
-                "format2": "https://civitai.com/models/649516?modelVersionId=726676",
+                "format2": "https://civitai.com/models/12345?modelVersionId=67890",
-                "format3": "https://civitai.com/models/649516/model-name?modelVersionId=726676",
+                "format3": "https://civitai.com/models/12345/model-name?modelVersionId=67890",
-                "note": "Nota: Si no se proporciona modelVersionId, se usará la versión más reciente."
+                "note": "Nota: Si no se proporciona modelVersionId, se usará la versión más reciente.",
+                "format4": "https://civarchive.com/models/12345 (CivitArchive)"
             },
             "confirmAction": "Confirmar re-vinculación"
         },
@@ -2225,6 +2226,7 @@
             "relinkFailed": "Error: {message}",
             "linkHfSuccess": "Modelo vinculado a HuggingFace exitosamente",
             "linkHfFailed": "Error: {message}",
+            "linkCivArchSuccess": "Modelo re-vinculado exitosamente mediante CivitArchive",
             "fetchMetadataFirst": "Por favor obtén metadatos de CivitAI primero",
             "noCivitaiInfo": "No hay información de CivitAI disponible",
             "missingHash": "Hash del modelo no disponible"

locales/fr.json

@@ -963,7 +963,7 @@
             }
         },
         "duplicates": {
-            "finding": "[TODO: Translate] Scanning for duplicate recipes...",
+            "finding": "Recherche de recettes en doublon...",
             "found": "Trouvé {count} groupes de doublons",
             "noGroups": "Aucun groupe de doublons trouvé avec le critère de correspondance actuel",
             "keepLatest": "Garder les dernières versions",
@@ -1422,13 +1422,14 @@
             },
             "proceedText": "Ne procédez que si vous êtes sûr que c'est ce que vous voulez.",
             "urlLabel": "URL du modèle Civitai :",
-            "urlPlaceholder": "https://civitai.com/models/649516/model-name?modelVersionId=726676",
+            "urlPlaceholder": "https://civitai.com/models/12345/model-name?modelVersionId=67890",
             "helpText": {
-                "title": "Collez n'importe quelle URL de modèle Civitai. Formats supportés :",
+                "title": "Collez n'importe quelle URL de modèle Civitai ou CivitArchive. Formats supportés :",
-                "format1": "https://civitai.com/models/649516",
+                "format1": "https://civitai.com/models/12345",
-                "format2": "https://civitai.com/models/649516?modelVersionId=726676",
+                "format2": "https://civitai.com/models/12345?modelVersionId=67890",
-                "format3": "https://civitai.com/models/649516/model-name?modelVersionId=726676",
+                "format3": "https://civitai.com/models/12345/model-name?modelVersionId=67890",
-                "note": "Note : Si aucun modelVersionId n'est fourni, la dernière version sera utilisée."
+                "note": "Note : Si aucun modelVersionId n'est fourni, la dernière version sera utilisée.",
+                "format4": "https://civarchive.com/models/12345 (CivitArchive)"
             },
             "confirmAction": "Confirmer la re-liaison"
         },
@@ -2225,6 +2226,7 @@
             "relinkFailed": "Erreur : {message}",
             "linkHfSuccess": "Modèle lié à HuggingFace avec succès",
             "linkHfFailed": "Erreur : {message}",
+            "linkCivArchSuccess": "Modèle relié via CivitArchive avec succès",
             "fetchMetadataFirst": "Veuillez d'abord récupérer les métadonnées depuis CivitAI",
             "noCivitaiInfo": "Aucune information CivitAI disponible",
             "missingHash": "Hash du modèle non disponible"

locales/he.json

@@ -963,7 +963,7 @@
             }
         },
         "duplicates": {
-            "finding": "[TODO: Translate] Scanning for duplicate recipes...",
+            "finding": "סורק למציאת מתכונים כפולים...",
             "found": "נמצאו {count} קבוצות כפולות",
             "noGroups": "לא נמצאו קבוצות כפולות לפי קריטריון ההתאמה הנוכחי",
             "keepLatest": "שמור גרסאות אחרונות",
@@ -1422,13 +1422,14 @@
             },
             "proceedText": "המשך רק אם אתה בטוח שזה מה שאתה רוצה.",
             "urlLabel": "כתובת URL של מודל ב-Civitai:",
-            "urlPlaceholder": "https://civitai.com/models/649516/model-name?modelVersionId=726676",
+            "urlPlaceholder": "https://civitai.com/models/12345/model-name?modelVersionId=67890",
             "helpText": {
-                "title": "הדבק כל כתובת URL של מודל מ-Civitai. פורמטים נתמכים:",
+                "title": "הדבק כל כתובת URL של מודל מ-Civitai או מ-CivitArchive. פורמטים נתמכים:",
-                "format1": "https://civitai.com/models/649516",
+                "format1": "https://civitai.com/models/12345",
-                "format2": "https://civitai.com/models/649516?modelVersionId=726676",
+                "format2": "https://civitai.com/models/12345?modelVersionId=67890",
-                "format3": "https://civitai.com/models/649516/model-name?modelVersionId=726676",
+                "format3": "https://civitai.com/models/12345/model-name?modelVersionId=67890",
-                "note": "הערה: אם לא סופק modelVersionId, תילקח הגרסה האחרונה."
+                "note": "הערה: אם לא סופק modelVersionId, תילקח הגרסה האחרונה.",
+                "format4": "https://civarchive.com/models/12345 (CivitArchive)"
             },
             "confirmAction": "אשר קישור מחדש"
         },
@@ -2225,6 +2226,7 @@
             "relinkFailed": "שגיאה: {message}",
             "linkHfSuccess": "המודל נקשר בהצלחה ל-HuggingFace",
             "linkHfFailed": "שגיאה: {message}",
+            "linkCivArchSuccess": "המודל קושר מחדש דרך CivitArchive בהצלחה",
             "fetchMetadataFirst": "אנא אחזר מטא-דאטה מ-CivitAI תחילה",
             "noCivitaiInfo": "אין מידע מ-CivitAI זמין",
             "missingHash": "ה-hash של המודל אינו זמין"

locales/ja.json

@@ -963,7 +963,7 @@
             }
         },
         "duplicates": {
-            "finding": "[TODO: Translate] Scanning for duplicate recipes...",
+            "finding": "重複レシピをスキャンしています...",
             "found": "{count} 個の重複グループが見つかりました",
             "noGroups": "現在の一致基準では重複グループが見つかりませんでした",
             "keepLatest": "最新バージョンを保持",
@@ -1422,13 +1422,14 @@
             },
             "proceedText": "これが本当に必要な場合のみ続行してください。",
             "urlLabel": "CivitaiモデルURL：",
-            "urlPlaceholder": "https://civitai.com/models/649516/model-name?modelVersionId=726676",
+            "urlPlaceholder": "https://civitai.com/models/12345/model-name?modelVersionId=67890",
             "helpText": {
-                "title": "CivitaiモデルURLを貼り付けてください。対応形式：",
+                "title": "CivitaiまたはCivitArchiveのモデルURLを貼り付けてください。対応形式：",
-                "format1": "https://civitai.com/models/649516",
+                "format1": "https://civitai.com/models/12345",
-                "format2": "https://civitai.com/models/649516?modelVersionId=726676",
+                "format2": "https://civitai.com/models/12345?modelVersionId=67890",
-                "format3": "https://civitai.com/models/649516/model-name?modelVersionId=726676",
+                "format3": "https://civitai.com/models/12345/model-name?modelVersionId=67890",
-                "note": "注：modelVersionIdが提供されていない場合、最新バージョンが使用されます。"
+                "note": "注：modelVersionIdが提供されていない場合、最新バージョンが使用されます。",
+                "format4": "https://civarchive.com/models/12345 (CivitArchive)"
             },
             "confirmAction": "再リンクを確認"
         },
@@ -2225,6 +2226,7 @@
             "relinkFailed": "エラー：{message}",
             "linkHfSuccess": "モデルを HuggingFace にリンクしました",
             "linkHfFailed": "エラー：{message}",
+            "linkCivArchSuccess": "モデルがCivitArchive経由で正常に再リンクされました",
             "fetchMetadataFirst": "最初にCivitAIからメタデータを取得してください",
             "noCivitaiInfo": "CivitAI情報が利用できません",
             "missingHash": "モデルハッシュが利用できません"

locales/ko.json

@@ -963,7 +963,7 @@
             }
         },
         "duplicates": {
-            "finding": "[TODO: Translate] Scanning for duplicate recipes...",
+            "finding": "중복 레시피를 스캔하는 중...",
             "found": "{count}개의 중복 그룹 발견",
             "noGroups": "현재 일치 기준으로 중복 그룹을 찾을 수 없습니다",
             "keepLatest": "최신 버전 유지",
@@ -1422,13 +1422,14 @@
             },
             "proceedText": "원하는 작업이 확실한 경우에만 진행하세요.",
             "urlLabel": "Civitai 모델 URL:",
-            "urlPlaceholder": "https://civitai.com/models/649516/model-name?modelVersionId=726676",
+            "urlPlaceholder": "https://civitai.com/models/12345/model-name?modelVersionId=67890",
             "helpText": {
-                "title": "모든 Civitai 모델 URL을 붙여넣으세요. 지원되는 형식:",
+                "title": "Civitai 또는 CivitArchive 모델 URL을 붙여넣으세요. 지원되는 형식:",
-                "format1": "https://civitai.com/models/649516",
+                "format1": "https://civitai.com/models/12345",
-                "format2": "https://civitai.com/models/649516?modelVersionId=726676",
+                "format2": "https://civitai.com/models/12345?modelVersionId=67890",
-                "format3": "https://civitai.com/models/649516/model-name?modelVersionId=726676",
+                "format3": "https://civitai.com/models/12345/model-name?modelVersionId=67890",
-                "note": "참고: modelVersionId가 제공되지 않으면 최신 버전이 사용됩니다."
+                "note": "참고: modelVersionId가 제공되지 않으면 최신 버전이 사용됩니다.",
+                "format4": "https://civarchive.com/models/12345 (CivitArchive)"
             },
             "confirmAction": "다시 연결 확인"
         },
@@ -2225,6 +2226,7 @@
             "relinkFailed": "오류: {message}",
             "linkHfSuccess": "모델이 HuggingFace에 연결되었습니다",
             "linkHfFailed": "오류: {message}",
+            "linkCivArchSuccess": "모델이 CivitArchive을 통해 성공적으로 다시 연결되었습니다",
             "fetchMetadataFirst": "먼저 CivitAI에서 메타데이터를 가져와주세요",
             "noCivitaiInfo": "사용 가능한 CivitAI 정보가 없습니다",
             "missingHash": "모델 해시를 사용할 수 없습니다"

locales/ru.json

@@ -963,7 +963,7 @@
             }
         },
         "duplicates": {
-            "finding": "[TODO: Translate] Scanning for duplicate recipes...",
+            "finding": "Поиск дублирующихся рецептов...",
             "found": "Найдено {count} групп дубликатов",
             "noGroups": "Дубликатов с текущим критерием не найдено",
             "keepLatest": "Оставить последние версии",
@@ -1422,13 +1422,14 @@
             },
             "proceedText": "Продолжайте только если вы уверены, что это то, что вам нужно.",
             "urlLabel": "URL модели Civitai:",
-            "urlPlaceholder": "https://civitai.com/models/649516/model-name?modelVersionId=726676",
+            "urlPlaceholder": "https://civitai.com/models/12345/model-name?modelVersionId=67890",
             "helpText": {
-                "title": "Вставьте любой URL модели Civitai. Поддерживаемые форматы:",
+                "title": "Вставьте любой URL модели Civitai или CivitArchive. Поддерживаемые форматы:",
-                "format1": "https://civitai.com/models/649516",
+                "format1": "https://civitai.com/models/12345",
-                "format2": "https://civitai.com/models/649516?modelVersionId=726676",
+                "format2": "https://civitai.com/models/12345?modelVersionId=67890",
-                "format3": "https://civitai.com/models/649516/model-name?modelVersionId=726676",
+                "format3": "https://civitai.com/models/12345/model-name?modelVersionId=67890",
-                "note": "Примечание: Если modelVersionId не указан, будет использована последняя версия."
+                "note": "Примечание: Если modelVersionId не указан, будет использована последняя версия.",
+                "format4": "https://civarchive.com/models/12345 (CivitArchive)"
             },
             "confirmAction": "Подтвердить пересвязывание"
         },
@@ -2225,6 +2226,7 @@
             "relinkFailed": "Ошибка: {message}",
             "linkHfSuccess": "Модель успешно связана с HuggingFace",
             "linkHfFailed": "Ошибка: {message}",
+            "linkCivArchSuccess": "Модель успешно пересвязана через CivitArchive",
             "fetchMetadataFirst": "Пожалуйста, сначала получите метаданные с CivitAI",
             "noCivitaiInfo": "Информация CivitAI недоступна",
             "missingHash": "Хеш модели недоступен"

locales/zh-CN.json

@@ -963,7 +963,7 @@
             }
         },
         "duplicates": {
-            "finding": "[TODO: Translate] Scanning for duplicate recipes...",
+            "finding": "正在扫描重复配方...",
             "found": "发现 {count} 个重复组",
             "noGroups": "按当前判重依据未找到重复组",
             "keepLatest": "保留最新版本",
@@ -1422,13 +1422,14 @@
             },
             "proceedText": "仅在你确定需要此操作时继续。",
             "urlLabel": "Civitai 模型 URL：",
-            "urlPlaceholder": "https://civitai.com/models/649516/model-name?modelVersionId=726676 或 https://civitai.red/models/649516/model-name?modelVersionId=726676",
+            "urlPlaceholder": "https://civitai.com/models/12345/model-name?modelVersionId=67890 或 https://civitai.red/models/12345/model-name?modelVersionId=67890",
             "helpText": {
-                "title": "粘贴任意来自 civitai.com 或 civitai.red 的 Civitai 模型 URL。支持格式：",
+                "title": "粘贴任意 Civitai 或 CivitArchive 模型 URL。支持格式：",
-                "format1": "https://civitai.com/models/649516",
+                "format1": "https://civitai.com/models/12345",
-                "format2": "https://civitai.com/models/649516?modelVersionId=726676",
+                "format2": "https://civitai.com/models/12345?modelVersionId=67890",
-                "format3": "https://civitai.com/models/649516/model-name?modelVersionId=726676",
+                "format3": "https://civitai.com/models/12345/model-name?modelVersionId=67890",
-                "note": "注意：如果未提供 modelVersionId，将使用最新版本。"
+                "note": "注意：如果未提供 modelVersionId，将使用最新版本。",
+                "format4": "https://civarchive.com/models/12345 (CivitArchive)"
             },
             "confirmAction": "确认重新关联"
         },
@@ -2225,6 +2226,7 @@
             "relinkFailed": "错误：{message}",
             "linkHfSuccess": "模型已成功链接到 HuggingFace",
             "linkHfFailed": "错误：{message}",
+            "linkCivArchSuccess": "模型已成功通过 CivitArchive 重新关联",
             "fetchMetadataFirst": "请先从 CivitAI 获取元数据",
             "noCivitaiInfo": "无 CivitAI 信息",
             "missingHash": "模型哈希不可用"

locales/zh-TW.json

@@ -963,7 +963,7 @@
             }
         },
         "duplicates": {
-            "finding": "[TODO: Translate] Scanning for duplicate recipes...",
+            "finding": "正在掃描重複配方...",
             "found": "發現 {count} 組重複項",
             "noGroups": "按目前判重依據未找到重複組",
             "keepLatest": "保留最新版本",
@@ -1422,13 +1422,14 @@
             },
             "proceedText": "僅在確定需要執行時才繼續。",
             "urlLabel": "Civitai 模型網址：",
-            "urlPlaceholder": "https://civitai.com/models/649516/model-name?modelVersionId=726676",
+            "urlPlaceholder": "https://civitai.com/models/12345/model-name?modelVersionId=67890",
             "helpText": {
-                "title": "貼上任意 Civitai 模型網址。支援格式：",
+                "title": "貼上任意 Civitai 或 CivitArchive 模型網址。支援格式：",
-                "format1": "https://civitai.com/models/649516",
+                "format1": "https://civitai.com/models/12345",
-                "format2": "https://civitai.com/models/649516?modelVersionId=726676",
+                "format2": "https://civitai.com/models/12345?modelVersionId=67890",
-                "format3": "https://civitai.com/models/649516/model-name?modelVersionId=726676",
+                "format3": "https://civitai.com/models/12345/model-name?modelVersionId=67890",
-                "note": "注意：若未提供 modelVersionId，將使用最新版本。"
+                "note": "注意：若未提供 modelVersionId，將使用最新版本。",
+                "format4": "https://civarchive.com/models/12345 (CivitArchive)"
             },
             "confirmAction": "確認重新連結"
         },
@@ -2225,6 +2226,7 @@
             "relinkFailed": "錯誤：{message}",
             "linkHfSuccess": "模型已成功連結到 HuggingFace",
             "linkHfFailed": "錯誤：{message}",
+            "linkCivArchSuccess": "模型已成功透過 CivitArchive 重新連結",
             "fetchMetadataFirst": "請先從 CivitAI 取得 metadata",
             "noCivitaiInfo": "無 CivitAI 資訊",
             "missingHash": "模型雜湊不可用"

py/routes/handlers/model_handlers.py

@@ -634,6 +634,16 @@ class ModelManagementHandler:
             file_path = data.get("file_path")
             model_id = data.get("model_id")
             model_version_id = data.get("model_version_id")
+            source = data.get("source")
+
+            if source not in (None, "", "civarchive"):
+                return web.json_response(
+                    {
+                        "success": False,
+                        "error": f"Unsupported relink source: {source}",
+                    },
+                    status=400,
+                )
 
             if not file_path or model_id is None:
                 return web.json_response(
@@ -649,20 +659,33 @@ class ModelManagementHandler:
                 metadata_path
             )
 
+            relink_kwargs = {
+                "file_path": file_path,
+                "metadata": local_metadata,
+                "model_id": int(model_id),
+                "model_version_id": int(model_version_id) if model_version_id else None,
+            }
+            if source == "civarchive":
+                relink_kwargs["provider_name"] = "civarchive_api"
+
             updated_metadata = await self._metadata_sync.relink_metadata(
-                file_path=file_path,
+                **relink_kwargs
-                metadata=local_metadata,
-                model_id=int(model_id),
-                model_version_id=int(model_version_id) if model_version_id else None,
             )
 
             await self._service.scanner.update_single_model_cache(
                 file_path, file_path, updated_metadata
             )
 
-            message = f"Model successfully re-linked to Civitai model {model_id}" + (
+            if source == "civarchive":
-                f" version {model_version_id}" if model_version_id else ""
+                message = (
-            )
+                    f"Model successfully re-linked to CivArchive model {model_id}"
+                    + (f" version {model_version_id}" if model_version_id else "")
+                )
+            else:
+                message = (
+                    f"Model successfully re-linked to Civitai model {model_id}"
+                    + (f" version {model_version_id}" if model_version_id else "")
+                )
             return web.json_response(
                 {
                     "success": True,
@@ -670,6 +693,8 @@ class ModelManagementHandler:
                     "hash": updated_metadata.get("sha256", ""),
                 }
             )
+        except ValueError as exc:
+            return web.json_response({"success": False, "error": str(exc)}, status=400)
         except Exception as exc:
             if is_expected_offline_error(str(exc)):
                 return web.json_response(

py/services/metadata_sync_service.py

@@ -419,14 +419,37 @@ class MetadataSyncService:
         metadata: Dict[str, Any],
         model_id: int,
         model_version_id: Optional[int],
+        provider_name: Optional[str] = None,
     ) -> Dict[str, Any]:
-        """Relink a local metadata record to a specific CivitAI model version."""
+        """Relink a local metadata record to a specific CivitAI model version.
+
+        When ``provider_name`` is given, the named provider is resolved via the
+        metadata provider selector instead of the default fallback chain. A
+        missing/disabled provider surfaces a user-friendly error instead of the
+        raw selector exception.
+        """
+
+        if provider_name:
+            try:
+                provider = await self._get_provider(provider_name)
+            except ValueError as exc:
+                logger.warning(
+                    "Unable to resolve metadata provider %s: %s", provider_name, exc
+                )
+                raise ValueError(
+                    "CivitArchive is not available or not enabled. "
+                    "Enable the CivitArchive API in settings to relink via CivArchive."
+                ) from exc
+        else:
+            provider = await self._get_default_provider()
 
-        provider = await self._get_default_provider()
         civitai_metadata = await provider.get_model_version(model_id, model_version_id)
         if not civitai_metadata:
+            provider_label = (
+                "CivitArchive" if provider_name == "civarchive_api" else "CivitAI"
+            )
             raise ValueError(
-                f"Model version not found on CivitAI for ID: {model_id}"
+                f"Model version not found on {provider_label} for ID: {model_id}"
                 + (f" with version: {model_version_id}" if model_version_id else "")
             )
 

static/js/components/ContextMenu/ModelContextMenuMixin.js

@@ -6,7 +6,7 @@ import { bulkManager } from '../../managers/BulkManager.js';
 import { MODEL_CONFIG } from '../../api/apiConfig.js';
 import { translate } from '../../utils/i18nHelpers.js';
 import { getNsfwLevelSelector } from '../shared/NsfwLevelSelector.js';
-import { extractCivitaiModelUrlParts } from '../../utils/civitaiUtils.js';
+import { classifyModelRelinkUrl } from '../../utils/civitaiUtils.js';
 
 // Mixin with shared functionality for LoraContextMenu and CheckpointContextMenu
 export const ModelContextMenuMixin = {
@@ -106,6 +106,17 @@ export const ModelContextMenuMixin = {
     },
 
     // Civitai re-linking methods
+    getModelTypePrefix() {
+        // Map the mixin model type to its API route prefix; the relink route
+        // exists for all model types via COMMON_ROUTE_DEFINITIONS.
+        const prefixMap = {
+            lora: 'loras',
+            checkpoint: 'checkpoints',
+            embedding: 'embeddings'
+        };
+        return prefixMap[this.modelType] || 'loras';
+    },
+
     showRelinkCivitaiModal() {
         const filePath = this.currentCard.dataset.filepath;
         if (!filePath) return;
@@ -123,10 +134,10 @@ export const ModelContextMenuMixin = {
         // Create new bound handler
         this._boundRelinkHandler = async () => {
             const url = urlInput.value.trim();
-            const { modelId, modelVersionId } = this.extractModelVersionId(url);
+            const { source, modelId, modelVersionId } = classifyModelRelinkUrl(url);
 
-            if (!modelId) {
+            if (!source || !modelId) {
-                errorDiv.textContent = 'Invalid URL format. Must include model ID.';
+                errorDiv.textContent = 'Invalid URL format. Expected: https://civitai.com/models/{modelId} or https://civarchive.com/models/{modelId}';
                 return;
             }
 
@@ -134,22 +145,30 @@ export const ModelContextMenuMixin = {
             modalManager.closeModal('relinkCivitaiModal');
 
             try {
-                state.loadingManager.showSimpleLoading('Re-linking to Civitai...');
+                const isCivArchive = source === 'civarchive';
+                state.loadingManager.showSimpleLoading(
+                    isCivArchive ? 'Re-linking via CivitArchive...' : 'Re-linking to Civitai...'
+                );
 
-                const endpoint = this.modelType === 'checkpoint' ? 
+                const endpoint = `/api/lm/${this.getModelTypePrefix()}/relink-civitai`;
-                    '/api/lm/checkpoints/relink-civitai' : 
+
-                    '/api/lm/loras/relink-civitai';
+                const payload = {
+                    file_path: filePath,
+                    model_id: modelId,
+                    model_version_id: modelVersionId
+                };
+                // Omitted source keeps backend default-provider behaviour; only
+                // civarchive pins the provider explicitly.
+                if (isCivArchive) {
+                    payload.source = source;
+                }
 
                 const response = await fetch(endpoint, {
                     method: 'POST',
                     headers: {
                         'Content-Type': 'application/json'
                     },
-                    body: JSON.stringify({
+                    body: JSON.stringify(payload)
-                        file_path: filePath,
-                        model_id: modelId,
-                        model_version_id: modelVersionId
-                    })
                 });
 
                 if (!response.ok) {
@@ -159,7 +178,11 @@ export const ModelContextMenuMixin = {
                 const data = await response.json();
 
                 if (data.success) {
-                    showToast('toast.contextMenu.relinkSuccess', {}, 'success');
+                    showToast(
+                        isCivArchive ? 'toast.contextMenu.linkCivArchSuccess' : 'toast.contextMenu.relinkSuccess',
+                        {},
+                        'success'
+                    );
                     // Reload the current view to show updated data
                     await this.resetAndReload();
                 } else {
@@ -255,10 +278,6 @@ export const ModelContextMenuMixin = {
         setTimeout(() => urlInput.focus(), 50);
     },
 
-    extractModelVersionId(url) {
-        return extractCivitaiModelUrlParts(url);
-    },
-
     parseModelId(value) {
         if (value === undefined || value === null || value === '') {
             return null;

static/js/utils/civitaiUtils.js

@@ -207,6 +207,47 @@ export function extractCivitaiModelUrlParts(url) {
     }
 }
 
+const CIVITARCHIVE_PAGE_HOSTS = new Set([
+    'civitaiarchive.com',
+    'civarchive.com',
+]);
+
+/**
+ * Classify a relink URL by its hosting source and extract ids.
+ * CivitArchive mirrors the Civitai id namespace, so both sources resolve to
+ * the same {modelId, modelVersionId} shape; only `source` differs.
+ */
+export function classifyModelRelinkUrl(url) {
+    if (!url || typeof url !== 'string') {
+        return { source: null, modelId: null, modelVersionId: null };
+    }
+
+    let parsedUrl;
+    try {
+        parsedUrl = new URL(url.trim());
+    } catch (e) {
+        return { source: null, modelId: null, modelVersionId: null };
+    }
+
+    if (parsedUrl.protocol !== 'http:' && parsedUrl.protocol !== 'https:') {
+        return { source: null, modelId: null, modelVersionId: null };
+    }
+
+    const hostname = parsedUrl.hostname.toLowerCase().replace(/^www\./, '');
+    const pathMatch = parsedUrl.pathname.match(/\/models\/(\d+)/);
+    const modelId = pathMatch ? pathMatch[1] : null;
+    const modelVersionId = parsedUrl.searchParams.get('modelVersionId');
+
+    if (SUPPORTED_CIVITAI_PAGE_HOSTS.has(hostname)) {
+        return { source: 'civitai', modelId, modelVersionId };
+    }
+    if (CIVITARCHIVE_PAGE_HOSTS.has(hostname) && modelId) {
+        return { source: 'civarchive', modelId, modelVersionId };
+    }
+
+    return { source: null, modelId: null, modelVersionId: null };
+}
+
 export function extractCivitaiImageId(url) {
     if (!url) {
         return null;

templates/components/modals/relink_civitai_modal.html

@@ -22,6 +22,7 @@
                 • {{ t('modals.relinkCivitai.helpText.format1') }}<br>
                 • {{ t('modals.relinkCivitai.helpText.format2') }}<br>
                 • {{ t('modals.relinkCivitai.helpText.format3') }}<br>
+                • {{ t('modals.relinkCivitai.helpText.format4') }}<br>
                 <em>{{ t('modals.relinkCivitai.helpText.note') }}</em>
             </div>
         </div>

tests/frontend/components/contextMenu.interactions.test.js

@@ -2504,4 +2504,172 @@ describe('Interaction-level regression coverage', () => {
 
     delete stateStub.currentPageType;
   });
+
+  it('opens the relink modal from the relink-civitai menu action', async () => {
+    document.body.innerHTML = `
+      <div id="loraContextMenu" class="context-menu">
+        <div class="context-menu-item has-submenu" data-has-submenu="link-model">
+          <div class="context-submenu">
+            <div class="context-menu-item" data-action="relink-civitai"></div>
+          </div>
+        </div>
+      </div>
+      <div id="relinkCivitaiModal" class="modal">
+        <input type="text" id="civitaiModelUrl" />
+        <div class="input-error" id="civitaiModelUrlError"></div>
+        <button class="confirm-btn" id="confirmRelinkBtn"></button>
+      </div>
+    `;
+
+    const { LoraContextMenu } = await import('../../../static/js/components/ContextMenu/LoraContextMenu.js');
+    const contextMenu = new LoraContextMenu();
+    const showModalSpy = vi.spyOn(contextMenu, 'showRelinkCivitaiModal').mockImplementation(() => {});
+
+    const card = document.createElement('div');
+    card.className = 'model-card';
+    card.dataset.filepath = '/models/test.safetensors';
+    document.body.appendChild(card);
+
+    contextMenu.showMenu(100, 100, card);
+    document.querySelector('[data-action="relink-civitai"]').dispatchEvent(new Event('click', { bubbles: true }));
+
+    expect(showModalSpy).toHaveBeenCalledTimes(1);
+  });
+
+  it('rejects an unsupported relink URL with an inline error and no fetch', async () => {
+    document.body.innerHTML = `
+      <div id="loraContextMenu" class="context-menu"></div>
+      <div id="relinkCivitaiModal" class="modal">
+        <input type="text" id="civitaiModelUrl" />
+        <div class="input-error" id="civitaiModelUrlError"></div>
+        <button class="confirm-btn" id="confirmRelinkBtn"></button>
+      </div>
+    `;
+
+    const { LoraContextMenu } = await import('../../../static/js/components/ContextMenu/LoraContextMenu.js');
+    const contextMenu = new LoraContextMenu();
+
+    const card = document.createElement('div');
+    card.className = 'model-card';
+    card.dataset.filepath = '/models/test.safetensors';
+    document.body.appendChild(card);
+
+    contextMenu.showMenu(100, 100, card);
+    contextMenu.showRelinkCivitaiModal();
+
+    document.getElementById('civitaiModelUrl').value = 'https://example.com/models/123456';
+    await contextMenu._boundRelinkHandler();
+
+    expect(document.getElementById('civitaiModelUrlError').textContent)
+      .toBe('Invalid URL format. Expected: https://civitai.com/models/{modelId} or https://civarchive.com/models/{modelId}');
+    expect(global.fetch).not.toHaveBeenCalled();
+    expect(modalManagerMock.closeModal).not.toHaveBeenCalled();
+  });
+
+  it('posts a valid CivitArchive URL to the relink endpoint with the civarchive source', async () => {
+    document.body.innerHTML = `
+      <div id="loraContextMenu" class="context-menu"></div>
+      <div id="relinkCivitaiModal" class="modal">
+        <input type="text" id="civitaiModelUrl" />
+        <div class="input-error" id="civitaiModelUrlError"></div>
+        <button class="confirm-btn" id="confirmRelinkBtn"></button>
+      </div>
+    `;
+
+    global.fetch = vi.fn(async () => ({
+      ok: true,
+      json: async () => ({ success: true }),
+    }));
+
+    const { LoraContextMenu } = await import('../../../static/js/components/ContextMenu/LoraContextMenu.js');
+    const contextMenu = new LoraContextMenu();
+
+    const card = document.createElement('div');
+    card.className = 'model-card';
+    card.dataset.filepath = '/models/test.safetensors';
+    document.body.appendChild(card);
+
+    contextMenu.showMenu(100, 100, card);
+    contextMenu.showRelinkCivitaiModal();
+
+    document.getElementById('civitaiModelUrl').value = 'https://civarchive.com/models/123456?modelVersionId=789012';
+    await contextMenu._boundRelinkHandler();
+    await flushAsyncTasks();
+
+    expect(modalManagerMock.closeModal).toHaveBeenCalledWith('relinkCivitaiModal');
+    expect(loadingManagerStub.showSimpleLoading).toHaveBeenCalledWith('Re-linking via CivitArchive...');
+    expect(global.fetch).toHaveBeenCalledWith('/api/lm/loras/relink-civitai', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({
+        file_path: '/models/test.safetensors',
+        model_id: '123456',
+        model_version_id: '789012',
+        source: 'civarchive',
+      }),
+    });
+    expect(showToastMock).toHaveBeenCalledWith('toast.contextMenu.linkCivArchSuccess', {}, 'success');
+    expect(resetAndReloadMock).toHaveBeenCalledTimes(1);
+    expect(loadingManagerStub.hide).toHaveBeenCalled();
+  });
+
+  it('posts a Civitai URL without a source key so backend defaults apply', async () => {
+    document.body.innerHTML = `
+      <div id="loraContextMenu" class="context-menu"></div>
+      <div id="relinkCivitaiModal" class="modal">
+        <input type="text" id="civitaiModelUrl" />
+        <div class="input-error" id="civitaiModelUrlError"></div>
+        <button class="confirm-btn" id="confirmRelinkBtn"></button>
+      </div>
+    `;
+
+    global.fetch = vi.fn(async () => ({
+      ok: true,
+      json: async () => ({ success: true }),
+    }));
+
+    const { LoraContextMenu } = await import('../../../static/js/components/ContextMenu/LoraContextMenu.js');
+    const contextMenu = new LoraContextMenu();
+
+    const card = document.createElement('div');
+    card.className = 'model-card';
+    card.dataset.filepath = '/models/test.safetensors';
+    document.body.appendChild(card);
+
+    contextMenu.showMenu(100, 100, card);
+    contextMenu.showRelinkCivitaiModal();
+
+    document.getElementById('civitaiModelUrl').value = 'https://civitai.com/models/65423?modelVersionId=777';
+    await contextMenu._boundRelinkHandler();
+    await flushAsyncTasks();
+
+    expect(global.fetch).toHaveBeenCalledWith('/api/lm/loras/relink-civitai', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({
+        file_path: '/models/test.safetensors',
+        model_id: '65423',
+        model_version_id: '777',
+      }),
+    });
+    expect(showToastMock).toHaveBeenCalledWith('toast.contextMenu.relinkSuccess', {}, 'success');
+  });
+
+  it('derives relink endpoint prefixes for all model types', async () => {
+    document.body.innerHTML = `
+      <div id="loraContextMenu" class="context-menu"></div>
+    `;
+
+    const { LoraContextMenu } = await import('../../../static/js/components/ContextMenu/LoraContextMenu.js');
+    const contextMenu = new LoraContextMenu();
+
+    contextMenu.modelType = 'lora';
+    expect(contextMenu.getModelTypePrefix()).toBe('loras');
+    contextMenu.modelType = 'checkpoint';
+    expect(contextMenu.getModelTypePrefix()).toBe('checkpoints');
+    contextMenu.modelType = 'embedding';
+    expect(contextMenu.getModelTypePrefix()).toBe('embeddings');
+    contextMenu.modelType = 'unknown';
+    expect(contextMenu.getModelTypePrefix()).toBe('loras');
+  });
 });

tests/frontend/components/modelContextMenuMixin.test.js

@@ -2,20 +2,15 @@ import { describe, expect, it } from 'vitest';
 
 import { ModelContextMenuMixin } from '../../../static/js/components/ContextMenu/ModelContextMenuMixin.js';
 
-describe('ModelContextMenuMixin.extractModelVersionId', () => {
+describe('ModelContextMenuMixin.getModelTypePrefix', () => {
-  it('accepts civitai.red model URLs', () => {
+  it('maps every known model type to its API route prefix', () => {
-    expect(
+    expect(ModelContextMenuMixin.getModelTypePrefix.call({ modelType: 'lora' })).toBe('loras');
-      ModelContextMenuMixin.extractModelVersionId(
+    expect(ModelContextMenuMixin.getModelTypePrefix.call({ modelType: 'checkpoint' })).toBe('checkpoints');
-        'https://civitai.red/models/65423/nijimecha-artstyle?modelVersionId=777'
+    expect(ModelContextMenuMixin.getModelTypePrefix.call({ modelType: 'embedding' })).toBe('embeddings');
-      )
-    ).toEqual({ modelId: '65423', modelVersionId: '777' });
   });
 
-  it('rejects model-like URLs from unsupported hosts', () => {
+  it('falls back to the loras prefix for unknown types', () => {
-    expect(
+    expect(ModelContextMenuMixin.getModelTypePrefix.call({ modelType: 'unknown' })).toBe('loras');
-      ModelContextMenuMixin.extractModelVersionId(
+    expect(ModelContextMenuMixin.getModelTypePrefix.call({})).toBe('loras');
-        'https://example.com/models/65423?modelVersionId=777'
-      )
-    ).toEqual({ modelId: null, modelVersionId: null });
   });
 });

tests/frontend/regression/modalRegistry.test.js

@@ -0,0 +1,61 @@
+import { describe, it, expect } from 'vitest';
+import { readFileSync, readdirSync, statSync } from 'fs';
+import path from 'path';
+
+// Regression guard: every `.modal` element shipped via components/modals.html
+// must be registered in ModalManager.initialize(). An unregistered modal makes
+// modalManager.showModal(id) silently no-op (see getModal returning undefined),
+// which manifests as "clicking the menu item does nothing" with no console
+// error — exactly the Link-to-CivitArchive bug this file guards against.
+describe('ModalManager registry parity', () => {
+  const repoRoot = path.resolve(__dirname, '../../..');
+  const modalsHtml = readFileSync(
+    path.join(repoRoot, 'templates/components/modals.html'),
+    'utf-8'
+  );
+  const modalManagerSrc = readFileSync(
+    path.join(repoRoot, 'static/js/managers/ModalManager.js'),
+    'utf-8'
+  );
+
+  const collectModalIds = (target, seen = new Set()) => {
+    if (statSync(target).isFile()) {
+      extractIds(readFileSync(target, 'utf-8'), seen);
+      return seen;
+    }
+    for (const entry of readdirSync(target, { withFileTypes: true })) {
+      collectModalIds(path.join(target, entry.name), seen);
+    }
+    return seen;
+  };
+
+  const extractIds = (content, seen) => {
+    for (const match of content.matchAll(/id="([A-Za-z][\w-]*)"[^>]*class="modal"/g)) {
+      seen.add(match[1]);
+    }
+  };
+
+  it('registers every modal declared in templates', () => {
+    const includeFiles = [
+      ...modalsHtml.matchAll(/\{%\s*include\s*'([^']+\.html)'\s*%\}/g),
+    ].map((m) => m[1]);
+
+    expect(includeFiles.length).toBeGreaterThan(0);
+
+    const declaredIds = new Set();
+    for (const relPath of includeFiles) {
+      collectModalIds(path.join(repoRoot, 'templates', relPath), declaredIds);
+    }
+
+    expect(declaredIds.size).toBeGreaterThan(0);
+
+    const unregistered = [...declaredIds].filter(
+      (id) => !modalManagerSrc.includes(`registerModal('${id}'`)
+    );
+
+    expect(
+      unregistered,
+      'Modal ids rendered on pages but never registered in ModalManager.initialize() — showModal() will silently do nothing for them'
+    ).toEqual([]);
+  });
+});

tests/frontend/utils/civitaiUtils.test.js

@@ -11,6 +11,7 @@ import {
     getThumbnailUrl,
     extractCivitaiImageId,
     extractCivitaiModelUrlParts,
+    classifyModelRelinkUrl,
     isCivitaiUrl,
     isSupportedCivitaiPageHost,
     OptimizationMode
@@ -305,4 +306,48 @@ describe('civitaiUtils', () => {
             expect(extractCivitaiImageId('https://example.com/images/126920345')).toBe(null);
         });
     });
+
+    describe('classifyModelRelinkUrl', () => {
+        it('classifies civitai.com model URLs', () => {
+            expect(
+                classifyModelRelinkUrl('https://civitai.com/models/649516/name?modelVersionId=726676')
+            ).toEqual({ source: 'civitai', modelId: '649516', modelVersionId: '726676' });
+        });
+
+        it('classifies civitai.red model URLs without a version id', () => {
+            expect(
+                classifyModelRelinkUrl('https://civitai.red/models/65423/')
+            ).toEqual({ source: 'civitai', modelId: '65423', modelVersionId: null });
+        });
+
+        it('classifies civarchive and civitaiarchive model URLs', () => {
+            expect(
+                classifyModelRelinkUrl('https://civarchive.com/models/1746460')
+            ).toEqual({ source: 'civarchive', modelId: '1746460', modelVersionId: null });
+            expect(
+                classifyModelRelinkUrl('http://www.civitaiarchive.com/models/42?modelVersionId=43')
+            ).toEqual({ source: 'civarchive', modelId: '42', modelVersionId: '43' });
+        });
+
+        it('rejects archive hosts when the path has no numeric model id', () => {
+            expect(
+                classifyModelRelinkUrl('https://civarchive.com/images/123')
+            ).toEqual({ source: null, modelId: null, modelVersionId: null });
+        });
+
+        it('rejects unsupported hosts and malformed input', () => {
+            expect(
+                classifyModelRelinkUrl('https://example.com/models/65423')
+            ).toEqual({ source: null, modelId: null, modelVersionId: null });
+            expect(
+                classifyModelRelinkUrl('not a url')
+            ).toEqual({ source: null, modelId: null, modelVersionId: null });
+            expect(
+                classifyModelRelinkUrl('')
+            ).toEqual({ source: null, modelId: null, modelVersionId: null });
+            expect(
+                classifyModelRelinkUrl(null)
+            ).toEqual({ source: null, modelId: null, modelVersionId: null });
+        });
+    });
 });

tests/routes/test_model_update_handler.py

@@ -3,11 +3,16 @@ import json
 import logging
 from types import SimpleNamespace
 from typing import Any
+from unittest.mock import AsyncMock
 
 import pytest
 
 from py.config import config
-from py.routes.handlers.model_handlers import ModelCivitaiHandler, ModelUpdateHandler
+from py.routes.handlers.model_handlers import (
+    ModelCivitaiHandler,
+    ModelManagementHandler,
+    ModelUpdateHandler,
+)
 from py.services.service_registry import ServiceRegistry
 from py.utils.metadata_manager import MetadataManager
 from py.services.model_update_service import ModelUpdateRecord, ModelVersionRecord
@@ -965,3 +970,110 @@ def test_serialize_version_file_count_defaults_to_none():
     )
     serialized = ModelUpdateHandler._serialize_version(version, None)
     assert serialized["fileCount"] is None
+
+
+def _build_relink_handler(metadata_sync):
+    service = SimpleNamespace(
+        scanner=SimpleNamespace(update_single_model_cache=AsyncMock())
+    )
+    return ModelManagementHandler(
+        service=service,
+        logger=logging.getLogger(__name__),
+        metadata_sync=metadata_sync,
+        preview_service=SimpleNamespace(),
+        tag_update_service=SimpleNamespace(),
+        lifecycle_service=SimpleNamespace(),
+    )
+
+
+@pytest.mark.asyncio
+async def test_relink_civitai_rejects_unsupported_source():
+    metadata_sync = SimpleNamespace(
+        load_local_metadata=AsyncMock(return_value={}),
+        relink_metadata=AsyncMock(),
+    )
+    handler = _build_relink_handler(metadata_sync)
+
+    request = SimpleNamespace(
+        json=AsyncMock(
+            return_value={
+                "file_path": "/tmp/model.safetensors",
+                "model_id": "123",
+                "model_version_id": "456",
+                "source": "huggingface",
+            }
+        )
+    )
+
+    response = await handler.relink_civitai(request)
+    assert response.status == 400
+    payload = json.loads(response.text)
+    assert payload["success"] is False
+    assert "Unsupported relink source" in payload["error"]
+    metadata_sync.relink_metadata.assert_not_awaited()
+
+
+@pytest.mark.asyncio
+async def test_relink_civitai_passes_provider_name_for_civarchive_source():
+    metadata_sync = SimpleNamespace(
+        load_local_metadata=AsyncMock(return_value={"model_name": "Local"}),
+        relink_metadata=AsyncMock(
+            return_value={"model_name": "Archived", "sha256": "abc"}
+        ),
+    )
+    handler = _build_relink_handler(metadata_sync)
+
+    request = SimpleNamespace(
+        json=AsyncMock(
+            return_value={
+                "file_path": "/tmp/model.safetensors",
+                "model_id": "123",
+                "model_version_id": "456",
+                "source": "civarchive",
+            }
+        )
+    )
+
+    response = await handler.relink_civitai(request)
+    assert response.status == 200
+    payload = json.loads(response.text)
+    assert payload["success"] is True
+    assert "CivArchive" in payload["message"]
+    metadata_sync.relink_metadata.assert_awaited_once_with(
+        file_path="/tmp/model.safetensors",
+        metadata={"model_name": "Local"},
+        model_id=123,
+        model_version_id=456,
+        provider_name="civarchive_api",
+    )
+
+
+@pytest.mark.asyncio
+async def test_relink_civitai_surfaces_provider_unavailable_without_500():
+    metadata_sync = SimpleNamespace(
+        load_local_metadata=AsyncMock(return_value={}),
+        relink_metadata=AsyncMock(
+            side_effect=ValueError(
+                "CivitArchive is not available or not enabled. "
+                "Enable the CivitArchive API in settings to relink via CivArchive."
+            )
+        ),
+    )
+    handler = _build_relink_handler(metadata_sync)
+
+    request = SimpleNamespace(
+        json=AsyncMock(
+            return_value={
+                "file_path": "/tmp/model.safetensors",
+                "model_id": "123",
+                "model_version_id": None,
+                "source": "civarchive",
+            }
+        )
+    )
+
+    response = await handler.relink_civitai(request)
+    assert response.status == 400
+    payload = json.loads(response.text)
+    assert payload["success"] is False
+    assert "CivitArchive" in payload["error"]

tests/services/test_metadata_sync_service.py

@@ -560,6 +560,131 @@ async def test_relink_metadata_raises_when_version_missing():
             model_version_id=None,
         )
 
+
+@pytest.mark.asyncio
+async def test_relink_metadata_uses_named_civarchive_provider(tmp_path):
+    default_provider = SimpleNamespace(
+        get_model_by_hash=AsyncMock(),
+        get_model_version=AsyncMock(),
+    )
+    civarchive_provider = SimpleNamespace(
+        get_model_by_hash=AsyncMock(),
+        get_model_version=AsyncMock(
+            return_value={
+                "files": [
+                    {
+                        "primary": True,
+                        "type": "Model",
+                        "hashes": {"SHA256": "ABCDEF"},
+                    }
+                ],
+                "model": {"name": "Archived"},
+                "images": [],
+            }
+        ),
+    )
+
+    async def select_provider(name: str):
+        return civarchive_provider if name == "civarchive_api" else default_provider
+
+    provider_selector = AsyncMock(side_effect=select_provider)
+    helpers = build_service(
+        default_provider=default_provider,
+        provider_selector=provider_selector,
+    )
+
+    metadata = {"model_name": "Local", "sha256": "original"}
+    result = await helpers.service.relink_metadata(
+        file_path=str(tmp_path / "model.safetensors"),
+        metadata=metadata,
+        model_id=1,
+        model_version_id=2,
+        provider_name="civarchive_api",
+    )
+
+    assert result["model_name"] == "Archived"
+    assert result["sha256"] == "original"
+    provider_selector.assert_awaited_with("civarchive_api")
+    civarchive_provider.get_model_version.assert_awaited_once_with(1, 2)
+    helpers.default_provider_factory.assert_not_awaited()
+    helpers.metadata_manager.save_metadata.assert_awaited_once()
+
+
+@pytest.mark.asyncio
+async def test_relink_metadata_raises_when_version_missing_with_civarchive():
+    default_provider = SimpleNamespace(
+        get_model_by_hash=AsyncMock(),
+        get_model_version=AsyncMock(),
+    )
+    civarchive_provider = SimpleNamespace(
+        get_model_by_hash=AsyncMock(),
+        get_model_version=AsyncMock(return_value=None),
+    )
+
+    async def select_provider(name: str):
+        return civarchive_provider if name == "civarchive_api" else default_provider
+
+    provider_selector = AsyncMock(side_effect=select_provider)
+    helpers = build_service(
+        default_provider=default_provider,
+        provider_selector=provider_selector,
+    )
+
+    with pytest.raises(ValueError, match="CivitArchive"):
+        await helpers.service.relink_metadata(
+            file_path="/tmp/model.safetensors",
+            metadata={},
+            model_id=9,
+            model_version_id=None,
+            provider_name="civarchive_api",
+        )
+
+
+@pytest.mark.asyncio
+async def test_relink_metadata_raises_friendly_error_when_provider_unavailable():
+    provider_selector = AsyncMock(
+        side_effect=ValueError("Provider 'civarchive_api' is not registered")
+    )
+    helpers = build_service(provider_selector=provider_selector)
+
+    with pytest.raises(ValueError, match="CivitArchive is not available or not enabled"):
+        await helpers.service.relink_metadata(
+            file_path="/tmp/model.safetensors",
+            metadata={},
+            model_id=9,
+            model_version_id=None,
+            provider_name="civarchive_api",
+        )
+
+
+@pytest.mark.asyncio
+async def test_relink_metadata_default_call_uses_default_provider_factory(tmp_path):
+    helpers = build_service()
+    helpers.default_provider.get_model_version.return_value = {
+        "files": [
+            {
+                "primary": True,
+                "type": "Model",
+                "hashes": {"SHA256": "ABCDEF"},
+            }
+        ],
+        "model": {"name": "Remote"},
+        "images": [],
+    }
+
+    result = await helpers.service.relink_metadata(
+        file_path=str(tmp_path / "model.safetensors"),
+        metadata={"model_name": "Local", "sha256": "original"},
+        model_id=1,
+        model_version_id=None,
+    )
+
+    assert result["model_name"] == "Remote"
+    assert result["sha256"] == "original"
+    helpers.default_provider_factory.assert_awaited_once()
+    helpers.provider_selector.assert_not_awaited()
+    helpers.metadata_manager.save_metadata.assert_awaited_once()
+
 @pytest.mark.asyncio
 async def test_fetch_and_update_model_persists_db_checked_when_sqlite_fails(tmp_path):
     """