Any member can destroy a room; observer sees highlighted whose turn it is

- DELETE /api/rooms/:id + destroy button in the header of human pages
  (participant and observer views), with confirmation
- turn indicator now names and highlights the expected participant(s)

packages/core/src/markdown.ts

@@ -9,6 +9,7 @@ export function renderObserverMarkdown(o: ObserverView, baseUrl: string): string
   parts.push(`Status: ${o.room_status} · expires ${o.room.expires_at} (all data deleted then).`);
   parts.push('');
   parts.push(`**Whose turn:** ${o.turn}`);
+  if (o.turn_waiting_for.length) parts.push(`**Waiting on:** ${o.turn_waiting_for.map((r) => `**${r}**`).join(', ')}`);
   parts.push('');
   parts.push(`Participants: ${o.participants.map((p) => p.role).join(', ')}`);
   parts.push('');
@@ -125,6 +126,7 @@ export function renderRoomMarkdown(i: MarkdownInput): string {
   parts.push('- `PUT /api/rooms/' + i.roomId + '/contract` — {"markdown": "## Facts\\n..."}');
   parts.push('- `POST /api/rooms/' + i.roomId + '/agree` — agree to current contract version; finalizes when everyone agreed and no blocking questions remain');
   parts.push('- `GET /api/rooms/' + i.roomId + '/final.md` — final Markdown artifact');
+  parts.push('- `DELETE /api/rooms/' + i.roomId + '` — destroy the room immediately (any member; deletes everything, including this token)');
 
   return parts.join('\n');
 }