* feat(backend): add `channelId` to `MiPoll` as a Denormalized field
* feat(backend): option to exclude polls in channels
* chore: exclude channel notes from featured polls
* docs(changelog): みつけるのアンケート欄にてチャンネルのアンケートが含まれてしまう問題を修正
* fix: missing license header
anatawa12