chore: release v1.0.7

Playout: slate fallback, strict ffprobe validation, Prometheus metrics
Chat: history on join, DM offline delivery, env-config rate limits,
  Redis auto-reconnect, heartbeat, ban/mute enforcement, DM metrics
Viewer: presence indicators, schedule overlay, public /api/schedule
Admin: playlist drag-reorder, schedule overrides CRUD, user actions,
  inline mod buttons, CSV export, config editor, restart buttons,
  upload normalization gate, analytics time range
nginx: CORS preflight, JSON health, stub_status
Docs: test-lab vs production distinction across all configs/docs
Infra: Redis maxmemory, CD health IP-agnostic, slate volume mount

frontend/public/admin/users.html

@@ -14,6 +14,7 @@
                     <th>Username</th>
                     <th>Room</th>
                     <th>Online</th>
+                    <th>Actions</th>
                 </tr>
             </thead>
             <tbody id="users-table-body"></tbody>