Face-to-face rooms card in Friends' Bots is bloated: compact one-line rooms, single Auto-send toggle #115

Problem

The "Face-to-face rooms" card in the Friends' Bots panel is bloated: a full-size card per room with a status line ("The number is no longer valid."), one tall row per member Bot (avatar + "Name · Owner's Bot"), the Auto-send explainer and checkbox repeated inside every room card, and large Open/Leave buttons. With several rooms the panel becomes very long.

Expected

• One compact row per room: room name, small member-avatar stack (+N), a muted status chip (e.g. "open" / "closed"), and small Open and Leave icon/text buttons on the same row. No per-member rows by default (members expand on click or are visible in the room's info panel).
• Drop "The number is no longer valid." from the list; show a small "closed" state instead.
• The Auto-send setting is a single compact toggle (one place, e.g. the section header or settings), not repeated in every room card, with the long explanation as a tooltip/hint.
• Rooms that are closed or left are collapsed/hidden under a "Past rooms" fold.

Acceptance

The section stays at roughly one line per room, all actions (Open, Leave, Auto-send) still work, tests added. Related: #114 (inline approvals and slimmer approvals panel); handle both in the same panel cleanup.