feat: release mobile issue assignments (#183)

frontend/index.html

@@ -353,6 +353,7 @@ textarea { resize: vertical; min-height: 120px; }
       <div id="issue-comment-status" class="small" aria-live="assertive"></div>
     </section>
     <div class="issue-sheet-actions">
+      <button id="release-issue" type="button">Release assignment</button>
       <button id="close-issue" type="button">Close issue</button>
       <a id="open-issue-gitea" href="#" target="_blank" rel="noopener noreferrer">Open in Gitea</a>
     </div>
@@ -1718,6 +1719,27 @@ textarea { resize: vertical; min-height: 120px; }
       button.disabled = false;
     }
   });
+  qs('#release-issue').addEventListener('click', async () => {
+    if (!selectedIssue || !window.confirm('Release ' + selectedIssue.key + ' from your My Work?')) return;
+    const releasing = selectedIssue;
+    const button = qs('#release-issue');
+    button.disabled = true;
+    qs('#issue-sheet-status').textContent = 'Releasing assignment…';
+    try {
+      const confirmed = await issueController.release(selectedIssue, lastContextSnapshot?.user?.login);
+      lastContextSnapshot = buildMyWork.removeIssue(
+        lastContextSnapshot, releasing.repository, releasing.number
+      );
+      paintMyWork(lastContextSnapshot);
+      closeIssueSheet();
+      qs('#my-work-action-status').textContent = releasing.key + ' released.' +
+        (confirmed.available ? ' It is available in Find Work.' : ' Other assignees remain.');
+    } catch (error) {
+      qs('#issue-sheet-status').textContent = error.message + ' The issue remains in My Work; retry.';
+      button.disabled = false;
+      button.focus();
+    }
+  });
   qs('#close-issue').addEventListener('click', async () => {
     if (!selectedIssue || !window.confirm('Close ' + selectedIssue.key + '?')) return;
     const closing = selectedIssue;