Phone chat buttons: the DM label no longer ends off-screen (button at 20px like Global's), and the Global chat button says Global, not G (#191)

ddiff --git a/public/css/messenger.css b/public/css/messenger.css
iindex a2f73f4a..e6f3cb20 100644
---- a/public/css/messenger.css
++++ b/public/css/messenger.css
@@@ -626,7 +626,8 @@
          border-radius: 0;
      }
      .messenger-toggle {
--        bottom: 12px;
++        /* 20px like the Global chat button: its "DM" label hangs 16px below, and at 12px it ended off-screen. */
++        bottom: 20px;
          left: 12px;
          width: 46px;
          height: 46px;
ddiff --git a/public/index.html b/public/index.html
iindex 6623832c..22aa431d 100644
---- a/public/index.html
++++ b/public/index.html
@@@ -992,7 +992,7 @@
  <button id="floating-chat-fab" class="floating-chat-fab" onclick="fcwToggle()" title="Open Global Chat" style="display:none">
      <i class="fa-solid fa-comments"></i>
      <span id="fcw-unread-badge" class="fcw-unread-badge" style="display:none">0</span>
--    <span class="fab-label">G</span>
++    <span class="fab-label">Global</span>
  </button>
  
  <!-- ── Mini Voice Channel Indicator (shows when connected & not on Chat tab) ── -->