[frontend] Add NBA recommendation activity type + handler wiring

Repo: · Issue: #989 Status: Open · Priority: P2 Assignee: Unassigned

Description

Sub-issue of #977.

Scope

• Add a new activity type for NBA recommendations and corresponding meta typing.
• Register the handler in the activity handler registry so activity rendering can pick it up.

Acceptance

• Activity type and meta types compile cleanly.
• Handler mapping exists for the new activity type.
• No UI changes yet beyond wiring.

Implementation Notes

Dash adds notes here while working

Related

Link to people, meetings, dependent tickets