feat: finish onboarding with active Today (Closes #1144)

frontend/index.html

@@ -1838,8 +1838,8 @@
     <p class="small">Choose work, start it, then return to Work whenever you want to continue.</p>
     <p id="mobile-first-task-status" class="small" role="status" aria-live="polite"></p>
     <div class="mobile-first-task-actions">
-      <button id="mobile-first-task-find" type="button">Find a task</button>
-      <button id="mobile-first-task-create" type="button">Create a task</button>
+      <button id="mobile-first-task-find" type="button">Find &amp; start</button>
+      <button id="mobile-first-task-create" type="button">Create &amp; start</button>
       <button id="mobile-first-task-setup" type="button">Make this phone work-ready</button>
     </div>
   </section>