Add menu enable toggle, user status, and mobile/UI polish

- Admin menu page: mobile item cards now put Actions in the top-right
  corner next to Status, matching the desktop row layout instead of
  stacking at the bottom; same treatment applied to announcements and
  users for consistency across all three admin lists
- Center button label text everywhere via .btn { justify-content: center }
  instead of one-off overrides
- Add a Disable/Enable Menu toggle to the admin menu toolbar; the public
  menu page shows its existing "menu being updated" message while disabled
- Add an Enabled/Disabled status to user accounts, with its own toggle
  badge, guardrails against disabling your own account or the last
  enabled account, and an immediate session kick for anyone disabled
  mid-session
- Fix the announcement banner / hero tagline "·" separators to hide only
  when their neighboring text actually wraps onto a different line,
  instead of a fixed breakpoint or always-on dot

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

index.php

@@ -84,7 +84,7 @@ $siteUrl = rtrim(SITE_URL, '/');
       <div class="announcement-banner banner-<?= htmlspecialchars($banner['type']) ?>" role="region" aria-label="Important Announcement">
         <div class="container announcement-inner">
           <span class="announcement-tag"><?= htmlspecialchars($banner['headline']) ?></span>
-          <span class="announcement-sep" aria-hidden="true">·</span>
+          <span class="announcement-sep wrap-sep" aria-hidden="true">·</span>
           <span class="announcement-text"><?= htmlspecialchars($banner['message']) ?></span>
         </div>
       </div>
@@ -105,7 +105,7 @@ $siteUrl = rtrim(SITE_URL, '/');
         <!-- <h1>The Old Fitz</h1> -->
         <!-- <p class="sub">Public House</p> -->
         <div class="tagline-row">
-          <span>Traditional Irish Pub</span><span>Family Friendly</span><span>No Reservations</span>
+          <span>Traditional Irish Pub</span><span class="tag-sep wrap-sep" aria-hidden="true">·</span><span>Family Friendly</span><span class="tag-sep wrap-sep" aria-hidden="true">·</span><span>No Reservations</span>
         </div>
         <div class="hero-ctas">
           <a class="btn btn-primary" href="https://www.google.com/maps/search/?api=1&query=100+N+Washington+St+Marion+IN" target="_blank" rel="noopener">Get Directions</a>