feat: add mobile requested-review navigation (Closes #969)

frontend/index.html

@@ -1330,6 +1330,13 @@
       </div>
       <button class="review-action" id="close-review-sheet">Close</button>
     </div>
+    <nav class="mobile-review-detail-nav" aria-label="Review sections">
+      <button type="button" data-review-section="overview">Overview</button>
+      <button type="button" data-review-section="files">Files</button>
+      <button type="button" data-review-section="feedback">Feedback</button>
+      <button type="button" data-review-section="history">History</button>
+    </nav>
+    <section id="review-overview">
     <div id="review-sheet-status" class="small" aria-live="polite">Choose a review request.</div>
     <button class="review-retry" id="retry-review-load" hidden>Retry loading review</button>
     <div class="review-sheet-body markdown-content" id="review-sheet-body"></div>
@@ -1339,6 +1346,8 @@
       <button class="ci-check-refresh" id="refresh-review-checks" type="button">Refresh checks</button>
       <div class="ci-check-list" id="review-check-list"></div>
     </details>
+    </section>
+    <section id="review-files-workspace">
     <h2>Changed files</h2>
     <div class="review-display-tools">
       <button id="review-wrap-lines" type="button" aria-pressed="false" aria-controls="review-files">Wrap lines</button>
@@ -1359,7 +1368,8 @@
       <span class="small" id="review-progress" aria-live="polite">0 of 0 files reviewed</span>
       <button id="next-unreviewed-review" disabled>Next unreviewed</button>
     </div>
-    <section class="review-feedback" aria-labelledby="review-feedback-title">
+    </section>
+    <section class="review-feedback" id="review-feedback" aria-labelledby="review-feedback-title">
       <h2 id="review-feedback-title">Draft feedback</h2>
       <label>Intended decision
         <select id="review-decision">
@@ -1383,8 +1393,10 @@
         <button id="continue-review-to-merge" type="button" hidden>Continue to merge</button>
       </div>
     </section>
+    <section id="review-history-workspace">
     <h2>Review history</h2>
     <div id="review-history" class="muted"></div>
+    </section>
     <div class="review-sheet-actions"><details class="detail-defer"><summary>Defer</summary><div class="detail-defer-options"><button type="button" data-detail-defer-preset="today" disabled data-planning-disabled>Later today</button><button type="button" data-detail-defer-preset="tomorrow" disabled data-planning-disabled>Tomorrow</button><button type="button" data-detail-defer-custom disabled data-planning-disabled>Choose date &amp; time</button><button type="button" data-detail-defer-cancel>Cancel</button></div></details></div>
     <nav class="work-session-nav" aria-label="Work session" hidden>
       <span class="small" aria-live="polite" data-work-session-progress></span>
@@ -1558,6 +1570,7 @@
 <script src="static/issue-filing-receipt.js"></script>
 <script src="static/mobile-issue-detail-nav.js"></script>
 <script src="static/mobile-update-detail-nav.js"></script>
+<script src="static/mobile-review-detail-nav.js"></script>
 <script src="static/dashboard.js"></script>
 </body>
 </html>