feat(models): show Civitai model/version ids in model modal, always-on hash/id search

- Model modal hash footnote now shows Civitai model id and version id
  (right-aligned, quick-copy buttons); hidden for non-Civitai models
- Hash/id exact search (sha256/autov2/autov3/civitai ids) is now always
  on: the search-options "hash" toggle is removed and the search_hash
  query param is silently ignored for API compatibility
- Footnote render condition relaxed so autov3-only and id-only models
  still show the line
- i18n: 4 new keys translated in all 9 locales; filters.hash key removed

locales/es.json

@@ -251,7 +251,6 @@
                 "modelname": "Nombre del modelo",
                 "tags": "Etiquetas",
                 "creator": "Creador",
-                "hash": "Hash",
                 "title": "Título de la receta",
                 "loraName": "Nombre de archivo LoRA",
                 "loraModel": "Nombre del modelo LoRA",
@@ -1837,6 +1836,8 @@
                 "sendToWorkflow": "Enviar a ComfyUI",
                 "sendToWorkflowText": "Enviar a ComfyUI",
                 "copyHash": "Copiar hash",
+                "copyCivitaiId": "Copiar ID de Civitai",
+                "civitaiIdCopied": "ID de Civitai copiado al portapapeles",
                 "deleteModelWithShortcut": "Eliminar modelo (Del)"
             },
             "openFileLocation": {
@@ -1855,6 +1856,8 @@
                 "baseModel": "Modelo base",
                 "size": "Tamaño",
                 "hashes": "Hashes",
+                "civitaiModelId": "ID del modelo",
+                "civitaiVersionId": "ID de versión",
                 "unknown": "Desconocido",
                 "usageTips": "Consejos de uso",
                 "additionalNotes": "Notas adicionales",