feat: add voice-to-draft mobile capture (Closes #929)

frontend/index.html

@@ -816,6 +816,26 @@
       <label for="create-issue-body">Note <span class="small">Optional</span>
         <textarea id="create-issue-body" maxlength="10000"></textarea>
       </label>
+      <section class="voice-issue-capture" id="voice-issue-capture" aria-labelledby="voice-issue-heading" hidden>
+        <div class="voice-issue-heading">
+          <strong id="voice-issue-heading">Speak capture</strong>
+          <span class="small">Your browser transcribes speech. Stackchain does not retain audio.</span>
+        </div>
+        <div class="voice-issue-controls">
+          <button id="start-voice-issue-capture" type="button">Speak capture</button>
+          <button id="stop-voice-issue-capture" type="button" hidden>Stop listening</button>
+        </div>
+        <div id="voice-issue-status" class="small" aria-live="polite"></div>
+        <div class="voice-issue-review" id="voice-issue-review" hidden>
+          <label for="voice-issue-transcript">Review transcript
+            <textarea id="voice-issue-transcript" maxlength="10255"></textarea>
+          </label>
+          <div class="voice-issue-review-actions">
+            <button id="append-voice-issue-transcript" type="button">Append to draft</button>
+            <button id="replace-with-voice-issue-transcript" type="button">Replace draft</button>
+          </div>
+        </div>
+      </section>
       <div class="create-issue-capture-actions">
         <button id="save-unfiled-issue" type="button">Save to Drafts</button>
         <button id="file-new-issue" type="button">File now</button>
@@ -1349,6 +1369,7 @@
 <script src="static/issue-attachment.js"></script>
 <script src="static/issue-filing-review.js"></script>
 <script src="static/issue-sheet.js"></script>
+<script src="static/voice-issue-capture.js"></script>
 <script src="static/create-issue-sheet.js"></script>
 <script src="static/create-and-start.js"></script>
 <script src="static/assign-and-start.js"></script>