Cover carousel tagging after the event and cohost removal so those carousel id callbacks are tested.

Sync event carousel ids on tag and cohost changes so the hourly job no longer rebuilds every live event.

Pull destroyed carousel ids from events immediately so the hourly refresh does not scan every live event.

Parenthesize the conversations map in the messaging test so RuboCop does not treat the block as belonging to assert_equal.

Add messaging tests and rename the tray badge to unchecked_messages? so it is not confused with per-conversation unread.

Drop deleted counterparties before limiting conversations so inbox pages stay full.

Keep pagelet pagination in the refresh URL so inbox More is not reset by the next poll.

Only bump a message receipt when it is behind the latest inbound message so thread polls do not rewrite the page.

Group conversations in Mongo so the inbox does not walk every message in Ruby.

Share one message bubble partial and helper so incoming and reply no longer duplicate the same markup.

Stop using Mongoid .or so OR clauses stay inside the existing filter instead of widening it.

Give messages a between scope, other_party, and conversations so the views stop rewriting the same queries.

Keep a gutter around message bubbles so long unbroken text cannot sit flush to the edge.

Hide the message thread until it is pinned to the latest message so load no longer flashes from the top.

Give the message thread a native full-height layout and skip pagelet rewrites when nothing changed.

Show navbar notifications and messages in a modal on small screens so the lists stay readable.

Drop blank PayPal error details so OAuth messages don't include a stray colon.

Fold leftover agent notes into one Everything else section.

Drop the Codex sandbox note from the agent test instructions.

Keep Mongoid conventions in the Mongo section of the agent notes.