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/schedule.html

@@ -23,4 +23,31 @@
         </table>
     </div>
     <p id="schedule-status" class="status-line" aria-live="polite">Loading schedule...</p>
+</div>
+
+<div class="panel-card">
+    <h2>Schedule Overrides</h2>
+    <p>Insert scheduled overrides to play specific videos at specific times.</p>
+    <form id="override-form" class="form-stack" style="max-width:500px">
+        <label>Media ID <input id="override-media-id" type="number" class="text-input" required /></label>
+        <label>Start Time <input id="override-start" type="datetime-local" class="text-input" required /></label>
+        <label>End Time <input id="override-end" type="datetime-local" class="text-input" required /></label>
+        <label>Reason <input id="override-reason" type="text" class="text-input" placeholder="e.g. special event" /></label>
+        <button type="submit" class="btn btn-primary">Add Override</button>
+    </form>
+    <p id="override-status" class="status-line" aria-live="polite"></p>
+    <div class="table-wrap" style="margin-top:1rem">
+        <table class="data-table">
+            <thead>
+                <tr>
+                    <th>Media ID</th>
+                    <th>Start</th>
+                    <th>End</th>
+                    <th>Reason</th>
+                    <th></th>
+                </tr>
+            </thead>
+            <tbody id="override-table-body"></tbody>
+        </table>
+    </div>
 </div>