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/ko.json

@@ -251,7 +251,6 @@
                 "modelname": "모델명",
                 "tags": "태그",
                 "creator": "제작자",
-                "hash": "해시",
                 "title": "레시피 제목",
                 "loraName": "LoRA 파일명",
                 "loraModel": "LoRA 모델명",
@@ -1837,6 +1836,8 @@
                 "sendToWorkflow": "ComfyUI로 보내기",
                 "sendToWorkflowText": "ComfyUI로 보내기",
                 "copyHash": "해시 복사",
+                "copyCivitaiId": "Civitai ID 복사",
+                "civitaiIdCopied": "Civitai ID가 클립보드에 복사되었습니다",
                 "deleteModelWithShortcut": "모델 삭제(Del)"
             },
             "openFileLocation": {
@@ -1855,6 +1856,8 @@
                 "baseModel": "베이스 모델",
                 "size": "크기",
                 "hashes": "해시",
+                "civitaiModelId": "모델 ID",
+                "civitaiVersionId": "버전 ID",
                 "unknown": "알 수 없음",
                 "usageTips": "사용 팁",
                 "additionalNotes": "추가 메모",