feat: add safe miner control foundation

backend/app/frontend/miner_detail_view.py

@@ -48,6 +48,38 @@ def miner_detail_content() -> str:
             <dl class="metric-grid" id="minerTelemetryDetails"></dl>
         </section>
     </div>
+    <section class="panel miner-controls" id="minerControlsSection"
+        aria-labelledby="minerControlsTitle">
+        <div class="panel-head"><div><p class="eyebrow">Agent-routed actions</p>
+            <h2 id="minerControlsTitle">Controls</h2></div>
+            <button class="quiet-button" id="minerControlsRefresh" type="button">Refresh controls</button>
+        </div>
+        <p class="panel-copy" id="minerControlsSummary" aria-live="polite">
+            Loading factual capability and recent operations.
+        </p>
+        <div id="minerControlCapabilities" class="control-capability-grid"></div>
+        <div id="minerControlActions" class="miner-control-actions" hidden>
+            <button class="command-button" id="minerServiceControl" type="button" hidden></button>
+            <form id="minerPerformanceControl" class="performance-control" hidden>
+                <label for="minerPerformanceMode">Performance mode</label>
+                <select id="minerPerformanceMode">
+                    <option value="low">Low</option>
+                    <option value="normal">Normal</option>
+                    <option value="high">High</option>
+                </select>
+                <button class="command-button" type="submit">Set mode</button>
+            </form>
+        </div>
+        <p id="minerControlPermission" class="permission-note" hidden>
+            Your account can inspect control capability and history but cannot queue controls.
+        </p>
+        <div id="minerControlResult" class="status-callout" role="status" hidden></div>
+        <div class="table-wrap compact-history-table">
+            <table><thead><tr><th>Action</th><th>Requested</th><th>Status</th>
+                <th>Verification</th><th>Created</th></tr></thead>
+                <tbody id="minerControlHistory"></tbody></table>
+        </div>
+    </section>
     <section class="panel" id="minerLocationSection" aria-labelledby="minerLocationTitle">
         <div class="panel-head"><div><p class="eyebrow">Physical context</p>
             <h2 id="minerLocationTitle">Location</h2></div></div>