Closes [#1583](https://github.com/twentyhq/core-team-issues/issues/1583) - Removed `messageId` column from `File` table and its references in code (unrelated to this PR) - Updated AI chat to use React Context API with persistent provider in `CommandMenuContainer` - Converted all AI chat component states to regular Recoil atoms (no instance context needed) --------- Co-authored-by: Félix Malfait <felix@twenty.com>