chore(home): drop the per-frame settings sheet logout link

Per-frame settings is the wrong scope for an account-level action.
The /settings tab still has the primary "Sign out" link, which is the
right place for it.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

frontend/src/views/HomeView.vue

@@ -231,8 +231,6 @@
       class="home-view__remove"
       @click="removeConfirmOpen = true"
     >Remove this frame</button>
-
-    <a href="/logout" class="home-view__logout">Sign out of pictureFrame</a>
   </BaseBottomSheet>
 
   <Teleport to="body">
@@ -1166,21 +1164,5 @@ async function saveSettings() {
     border-color: var(--color-danger, #c0392b);
     color: #fff;
   }
-
-  &__logout {
-    display: block;
-    margin-top: var(--space-3);
-    text-align: center;
-    font-size: var(--text-xs);
-    color: var(--color-text-muted);
-    text-decoration: none;
-    padding: var(--space-2);
-
-    &:hover, &:focus-visible {
-      color: var(--color-text);
-      text-decoration: underline;
-      outline: none;
-    }
-  }
 }
 </style>