feat(frontend): 画像を投稿前にプレビュー可能に (#15341)

* feat(client): 画像をプレビュー可能に

* Update Changelog

* SPDX

* 消えてたのFix

* Add storybook for MkImgPreviewDialog

* backgroundのスタイル変更

Co-authored-by: kakkokari-gtyih <67428053+kakkokari-gtyih@users.noreply.github.com>

* Add MkImgPreviewDialog to storybook generator

* Update packages/frontend/.storybook/generate.tsx

---------

Co-authored-by: kakkokari-gtyih <67428053+kakkokari-gtyih@users.noreply.github.com>

packages/frontend/src/components/MkPostFormAttaches.vue

@@ -22,20 +22,24 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</div>
 		</template>
 	</Sortable>
-	<p :class="[$style.remain, {
-		[$style.exceeded]: props.modelValue.length > 16,
-	}]">{{ 16 - props.modelValue.length }}/16</p>
+	<p
+		:class="[$style.remain, {
+			[$style.exceeded]: props.modelValue.length > 16,
+		}]"
+	>
+		{{ 16 - props.modelValue.length }}/16
+	</p>
 </div>
 </template>
 
 <script lang="ts" setup>
 import { defineAsyncComponent, inject } from 'vue';
 import * as Misskey from 'misskey-js';
+import type { MenuItem } from '@/types/menu';
 import MkDriveFileThumbnail from '@/components/MkDriveFileThumbnail.vue';
 import * as os from '@/os.js';
 import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
-import type { MenuItem } from '@/types/menu.js';
 
 const Sortable = defineAsyncComponent(() => import('vuedraggable').then(x => x.default));
 
@@ -168,6 +172,14 @@ function showFileMenu(file: Misskey.entities.DriveFile, ev: MouseEvent | Keyboar
 			text: i18n.ts.cropImage,
 			icon: 'ti ti-crop',
 			action: () : void => { crop(file); },
+		}, {
+			text: i18n.ts.preview,
+			icon: 'ti ti-photo-search',
+			action: () => {
+				os.popup(defineAsyncComponent(() => import('@/components/MkImgPreviewDialog.vue')), {
+					file: file,
+				});
+			},
 		});
 	}