Site-wide, any user can upload -- usable both as reactions and inline
in message text via :shortcode:, alongside the existing built-in
Unicode picker. A :shortcode: reference is stored/sent as literal
text (same as the built-in shortcode convention) and resolved to an
image at render time, so it degrades to plain text if the emoji is
later deleted.
Backend: new custom_emoji table (shortcode unique, sized to fit
MessageReaction.emoji's existing column alongside its colons), upload/
list/delete endpoints (delete restricted to uploader or site admin).
Frontend: a CustomEmojiProvider context feeds a new "Custom" category
in the emoji picker (inline upload + hover-to-remove), extends the
composer's shortcode autocomplete, and a shared EmojiGlyph resolver
renders custom emoji wherever a value can appear -- message text,
reaction pills, and the picker itself.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Typing ":name" now shows a matching-shortcode dropdown (same
join/leave/arrow-key UX as the existing @mention and #room autocompletes),
selecting one inserts the actual glyph immediately rather than leaving
literal ":name:" text. A bare ":" with nothing typed yet suggests
recently-used emoji instead of an arbitrary slice of the ~950 known
shortcodes.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Mirrors the @mention autocomplete exactly -- same trigger-detection
logic (factored into a shared detectTriggerQuery helper, parameterized
on '@' vs '#'), same arrow-key/Enter/Tab/Escape keyboard handling, same
dropdown. Suggests rooms the user belongs to, filtered by name prefix,
showing the room's description as a subtitle when it has one.
MentionAutocomplete.css is renamed to ComposerAutocomplete.css with
generic class names (composer-autocomplete-primary/-secondary instead of
-username/-display-name), now shared by both the mention and room-
reference dropdowns instead of being mention-specific.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
ksmithandClaude Sonnet 5