feat: scope mobile search by type and status (Closes #793)

frontend/index.html

@@ -429,6 +429,21 @@
     <button id="close-command-palette" type="button">Close</button>
   </div>
   <input id="cmd-input" type="text" role="combobox" aria-autocomplete="list" aria-controls="cmd-results" aria-expanded="false" placeholder="Search commands, issues, and pull requests..." />
+  <fieldset class="cmd-search-scope">
+    <legend>Filter search results</legend>
+    <label for="cmd-search-kind">Type</label>
+    <select id="cmd-search-kind">
+      <option value="all">All work</option>
+      <option value="issue">Issues</option>
+      <option value="pull">Pull requests</option>
+    </select>
+    <label for="cmd-search-state">Status</label>
+    <select id="cmd-search-state">
+      <option value="all">Any status</option>
+      <option value="open">Open</option>
+      <option value="closed">Closed</option>
+    </select>
+  </fieldset>
   <div id="cmd-results" class="stack" role="listbox" aria-label="Commands and work search results"></div>
   <button id="cmd-load-more" hidden>More results</button>
 </div>