Schema for connection activity history.

Records all connection-related events for auditing and activity feeds. The main Connection table stores only current state per user pair, while this table preserves the complete history of actions.

Actions

• "requested" - User requested a connection
• "accepted" - User accepted a connection request
• "rejected" - User rejected a connection request
• "removed" - User removed an existing connection

Fields

• user_a_uuid / user_b_uuid - The two users involved (stored with lower UUID first for consistency)
• actor_uuid - The user who performed this action
• user_a_id / user_b_id / actor_id - Integer IDs (deprecated, dual-write only)