Lists: connections #66

Endpoints

• GET /api/lists/connections (live-verified 200 {"connections":[]})
• POST /api/lists/connections
• DELETE /api/lists/connections/{id}

Work

• Determine what a connection links (list↔list relationships) by creating one from the web UI and reading it back — the spec carries no description and the test account has none.
• Service methods + model once the shape is known.
• Surface connections on the list detail with create/remove.
• If the concept turns out to be web-dashboard-specific, close with that finding recorded in CLAUDE.md rather than building speculatively.