enhance(backend): refine system account (#15530)

* wip

* wip

* wip

* Update SystemAccountService.ts

* Update 1740121393164-system-accounts.js

* Update DeleteAccountService.ts

* wip

* wip

* wip

* wip

* Update 1740121393164-system-accounts.js

* Update RepositoryModule.ts

* wip

* wip

* wip

* Update ApRendererService.ts

* wip

* wip

* Update SystemAccountService.ts

* fix tests

* fix tests

* fix tests

* fix tests

* fix tests

* fix tests

* add print logs

* ログが長すぎて出てないかもしれない

* fix migration

* refactor

* fix fed-tests

* Update RelayService.ts

* merge

* Update user.test.ts

* chore: emit log

* fix: tweak sleep duration

* fix: exit 1

* fix: wait for misskey processes to become healthy

* fix: longer sleep for user deletion

* fix: make sleep longer again

* デッドロック解消の試み

https://github.com/misskey-dev/misskey/issues/15005

* Revert "デッドロック解消の試み"

This reverts commit 266141f66f.

* wip

* Update SystemAccountService.ts

---------

Co-authored-by: おさむのひと <46447427+samunohito@users.noreply.github.com>
Co-authored-by: zyoshoka <107108195+zyoshoka@users.noreply.github.com>

packages/frontend/src/pages/user/home.vue

@@ -13,7 +13,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 			<div class="profile _gaps">
 				<MkAccountMoved v-if="user.movedTo" :movedTo="user.movedTo"/>
-				<MkRemoteCaution v-if="user.host != null" :href="user.url ?? user.uri!" class="warn"/>
+				<MkRemoteCaution v-if="user.host != null" :href="user.url ?? user.uri!"/>
+				<MkInfo v-if="user.host == null && user.username.includes('.')">{{ i18n.ts.isSystemAccount }}</MkInfo>
 
 				<div :key="user.id" class="main _panel">
 					<div class="banner-container" :style="style">