feat: implement turbo mode functionality with proxy support and dashboard display

worker/src/templates/dashboard.html

@@ -82,6 +82,28 @@
         </div>
     </div>
 
+    <div class="card stat-card" style="border-left: 4px solid {% if data.turbo_active %}var(--warning-text){% else %}var(--border-hover){% endif %};">
+        <div class="stat-label">Turbo Mode (Admin)</div>
+        <div class="stat-value" style="font-size: 24px; color: {% if data.turbo_active %}var(--warning-text){% else %}var(--text-primary){% endif %};">
+            {{ 'Active' if data.turbo_active else ('Armed' if data.turbo_mode else 'Off') }}
+        </div>
+        <div class="stat-subtext muted">
+            {% if data.proxy_enabled %}
+            Scheduler runs every ~{{ '%.1f'|format(data.turbo_effective_sleep_s) }}s
+            {% else %}
+            Enable proxy first to activate turbo
+            {% endif %}
+        </div>
+        {% if data.seconds_until_next is not none %}
+        <div class="stat-subtext muted">Next cycle in ~{{ data.seconds_until_next }}s</div>
+        {% endif %}
+        <form method="post" action="/admin/turbo" style="margin-top: 12px;">
+            <button type="submit" {% if not data.proxy_enabled %}disabled{% endif %} style="border: 1px solid var(--border-hover); background: {% if data.turbo_mode %}var(--warning-bg){% else %}var(--bg-surface-active){% endif %}; color: var(--text-primary); border-radius: 10px; padding: 8px 12px; cursor: {% if data.proxy_enabled %}pointer{% else %}not-allowed{% endif %}; font-weight: 600; opacity: {% if data.proxy_enabled %}1{% else %}0.55{% endif %};">
+                {{ 'Disable Turbo' if data.turbo_mode else 'Enable Turbo' }}
+            </button>
+        </form>
+    </div>
+
     <div class="card stat-card" style="border-left: 4px solid {% if data.queue_dead > 0 %}var(--danger-text){% else %}var(--success-text){% endif %};">
         <div class="stat-label">Delivery Queue</div>
         <div class="stat-value" style="font-size: 24px;">