P6: custom emoji, fuller remote profiles, and polls both ways

- Custom emoji (Emoji tags) on posts, display names, bios and profile fields, at most 64 per object, proxied, in
  Status.emojis and Account.emojis.
- Remote profiles keep their header, profile fields, locked flag, published date, movedTo, indexable, memorial and
  image descriptions (a locked GoToSocial account no longer shows as open).
- Polls: incoming Questions (Mastodon, Misskey, Pleroma, GoToSocial shapes) with counts, voters, end and closed;
  our own polls from the Mastodon API go out as Questions; votes in are counted once per voter and never become
  replies; personas vote on other servers' polls with one Note per choice; counts refresh with an Update at most every
  three minutes; a poll closes on time and tells its voters and its author. GET /api/v1/polls/:id and POST
  /api/v1/polls/:id/votes.
- An Update without a newer `updated` only refreshes poll, video, audio and event details and leaves no revision.

Checked live against GoToSocial: each side's poll reaches the other as a poll and each side's vote is counted.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012CzABvBkbcFqoHdmi8b9WB

docs/ROADMAP.md

@@ -448,8 +448,10 @@ it, raw where it doesn't.
   with its object embedded, which is all Misskey needs. `Create` and `Announce` ids do dereference.
 
 #### P6 What people see: emoji, polls, quotes, reactions, cards, players
-- **Custom emoji** on posts, names, fields and poll options, proxied.
-- **Polls** in and out, with the Misskey, Pleroma and PieFed vote shapes. A count refresh is never an edit.
+- **Custom emoji** on posts, names, fields and poll options, proxied (done in v1.10.0), together with fuller remote
+  profiles: header, fields, locked, published, moved-to, indexable, memorial, image descriptions.
+- **Polls** in and out, with the Misskey, Pleroma and PieFed vote shapes. A count refresh is never an edit (done in
+  v1.10.0; checked live both ways against GoToSocial).
 - **Quotes (FEP-044f):**
   - read every key; verify `QuoteAuthorization` on all of its fields; handle revocation;
   - be quotable: `canQuote`, answer `QuoteRequest`, serve and revoke stamps;