Feat: Chat (#15686)

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* Update types.ts

* Create 1742203321812-chat.js

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* Update room.vue

* Update home.vue

* Update home.vue

* Update ja-JP.yml

* Update index.d.ts

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* Update CHANGELOG.md

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* Update home.vue

* clean up

* Update misskey-js.api.md

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* lint fixes

* lint

* Update UserEntityService.ts

* search

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* 🎨

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* Update home.ownedRooms.vue

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* Update CHANGELOG.md

* Update style.scss

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* improve performance

* improve performance

* Update timeline.test.ts

packages/frontend/src/local-storage.ts

@@ -28,7 +28,7 @@ export type Keys = (
 	'theme' |
 	'themeId' |
 	'customCss' |
-	'message_drafts' |
+	'chatMessageDrafts' |
 	'scratchpad' |
 	'debug' |
 	'preferences' |