Inbox conversation list — keyset pagination
- Replaces the offset-based conversation list (capped at 250) with keyset pagination ordered by
(last_message_at, id). Loading more now continues reliably no matter how the list reorders in real time — fixing the case where the "load more" spinner spun but no new chats appeared, especially under the "Mine" filter.
Comprehensive inbox search
- Search a person's name and words from the chat together (e.g. "Maria invoice") and find the conversation. Search now spans contact name, message text, email, and phone number with fuzzy matching, ranking the best combined matches first.
Send-side bubble styling
- Restores translucent emerald styling for sent messages using a theme token that is always present in production builds and adapts to dark mode.