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

static/js/state/index.js

@@ -123,7 +123,6 @@ export const state = {
                 modelname: true,
                 tags: false,
                 creator: false,
-                hash: false,
                 recursive: getStorageItem(`${MODEL_TYPES.LORA}_recursiveSearch`, true),
             },
             filters: {
@@ -190,7 +189,6 @@ export const state = {
                 filename: true,
                 modelname: true,
                 creator: false,
-                hash: false,
                 recursive: getStorageItem(`${MODEL_TYPES.CHECKPOINT}_recursiveSearch`, true),
             },
             filters: {
@@ -230,7 +228,6 @@ export const state = {
                 modelname: true,
                 tags: false,
                 creator: false,
-                hash: false,
                 recursive: getStorageItem(`${MODEL_TYPES.EMBEDDING}_recursiveSearch`, true),
             },
             filters: {
@@ -268,7 +265,6 @@ export const state = {
                 modelname: true,
                 tags: false,
                 creator: false,
-                hash: false,
                 recursive: getStorageItem(`${MODEL_TYPES.OTHER}_recursiveSearch`, true),
             },
             filters: {