i18n: translate model-source strings into 9 locales

Complete the 15 [TODO: Translate] keys the model-source feature left behind
(modelCard.actions.viewOnSource, loras.contextMenu.linkModelSource,
modals.linkModelSource.*, modals.model.versions.sourceGroupInfo,
toast.contextMenu.enrichNeedsSource, toast.contextMenu.enrichUnsupportedSource),
and refresh the two enrichment labels that feature made stale.

- Brands stay Latin per R3: Hugging Face / ModelScope / TensorArt appear
  verbatim, and {source} is substituted by the caller at runtime, so no locale
  embeds a transliterated platform name. The placeholder-URL value
  (modals.linkModelSource.urlPlaceholder) stays byte-identical to en.json per
  the §6 URL exception.
- "model source" / "model page" / "model card" are new nouns and each locale
  gets exactly one rendering; "AI enrichment" reuses the noun already in each
  file from the previous enrichHfAgent copy. All of it is recorded in §2.
- modelCard.actions.viewOnSource follows each locale's existing
  viewOnHuggingFace pattern rather than the neighbouring viewOnCivitai one, so
  de/ru/he/ja/ko do not gain a third "View on ..." shape.
- loras.contextMenu.enrichHfAgent and loras.bulkOperations.enrichHfAgent read
  "AI HF metadata" in all nine locales. The feature invalidated that by also
  covering ModelScope, so both values drop the HF qualifier (the key names keep
  the historical Hf, and the guidelines now say so).
- Script conventions: fr keeps ASCII apostrophes and a space before ':' (the
  file is 351 ASCII vs 26 U+2019 and the modal being replaced was ASCII); ko
  keeps ASCII ':' and '()' (188 vs 6); CJK locales keep full-width punctuation;
  every ellipsis is ASCII '...'. Placeholders are verbatim per R2.
- modals.linkModelSource.enrichNote is phrased as a rule with the current
  exception in parentheses, so the guidelines call that out for whoever adds
  the next link-only source.

pytest tests/i18n: 20 passed, and scripts/sync_translation_keys.py --dry-run is
a no-op (no missing and no stale keys). Frontend: 1130 JS + 91 Vue passed.
Backend: 2815 passed. en.json is untouched by this commit.

docs/i18n-translation-guidelines.md

@@ -33,6 +33,15 @@ Locales: `en`, `zh-CN`, `zh-TW`, `ja`, `ko`, `fr`, `de`, `es`, `ru`, `he` (RTL).
 > in the same pass. The `folder_paths` JSON snippet shown in that state lives in
 > `templates/other.html`, **not** in the locale files, so it is never translated — only the
 > surrounding prose is. Terminology added in §2.
+>
+> **Status (2026-09, model sources):** models can now be linked to ModelScope and TensorArt
+> alongside Hugging Face, which added 15 keys (`modelCard.actions.viewOnSource`,
+> `loras.contextMenu.linkModelSource`, `modals.linkModelSource.*`,
+> `modals.model.versions.sourceGroupInfo`, `toast.contextMenu.enrichNeedsSource`,
+> `toast.contextMenu.enrichUnsupportedSource`) and refreshed the two `enrichHfAgent` labels,
+> which had hardcoded "HF" for a button that now also enriches ModelScope models. The
+> `modals.linkModelSource.urlPlaceholder` value stays byte-identical to `en.json` (it is a URL,
+> the §6 exception). Terminology in §2, "Model source feature".
 
 ---
 
@@ -292,6 +301,35 @@ physically exist:
 `settings.json` and `ComfyUI` stay verbatim in every locale; "reload this page" / "restart
 LoRA Manager" reuse each locale's existing restart wording (`settings.extraFolderPaths.*`).
 
+### Model source feature (Hugging Face / ModelScope / TensorArt)
+
+A model file can be linked to the page of an external model site. **Hugging Face**,
+**ModelScope** and **TensorArt** are brand names and stay Latin in every locale (R3); the
+generic nouns around them are translated:
+
+| Term | Rendering |
+|---|---|
+| model source | zh-CN 模型来源 · zh-TW 模型來源 · ja モデルソース · ko 모델 소스 · fr source de modèle · de Modellquelle · es fuente de modelo · ru источник модели · he מקור מודל |
+| model page | zh-CN 模型页面 · zh-TW 模型頁面 · ja モデルページ · ko 모델 페이지 · fr page du modèle · de Modellseite · es página del modelo · ru страница модели · he עמוד המודל |
+| model card | zh-CN 模型卡 · zh-TW 模型卡 · ja モデルカード · ko 모델 카드 · fr fiche de modèle · de Modellkarte · es ficha de modelo · ru карточка модели · he כרטיס מודל |
+| AI enrichment (noun) | reuse the existing pair per locale: zh-CN 增强 · zh-TW 增強 · ja 補完 · ko 보강 · fr enrichissement (par IA) · de Anreicherung (KI-) · es enriquecimiento (con IA) · ru обогащение (с помощью ИИ) · he העשרה (AI) |
+
+`modelCard.actions.viewOnSource` ("View on {source}") follows each locale's existing
+`viewOnHuggingFace` pattern — de `Auf … ansehen`, ru `Открыть …`, he `צפייה ב-…`,
+ja `… で見る`, ko `…에서 보기`, zh `在 … 查看`, fr `Voir sur …`, es `Ver en …`. `{source}` is
+replaced at runtime with the untranslated platform name, so the brand never appears inside the
+translated text.
+
+`modals.linkModelSource.enrichNote` states the rule that only sites exposing a readable model
+card can be enriched and names TensorArt as the current exception. Keep the parenthetical
+exception in sync if another link-only source is ever added — the sentence is deliberately
+phrased as a rule, not as an apology for one site.
+
+The context-menu and bulk-operation enrichment entry points read **"Enrich Metadata with AI"**
+in `en`, not "Enrich HF Metadata": they cover ModelScope as well, so no locale may reintroduce
+an `HF` qualifier in `loras.contextMenu.enrichHfAgent` / `loras.bulkOperations.enrichHfAgent`
+(the key names keep the historical `Hf`; only the values changed).
+
 ---
 
 ## 3. Cross-cutting confusion hot-spots (must-fix list)