Add favicon route and minor cleanup

- Add /favicon.ico route (204) to avoid browser 404
- CSS formatting tweaks
- Pipfile trailing newline

Co-authored-by: Cursor <cursoragent@cursor.com>

src/static/style.css

@@ -794,9 +794,7 @@ header h1 {
         flex-direction: row;
         align-items: center;
         gap: 0.25rem;
-    }
-
-    header h1 {
+    }    header h1 {
         font-size: 1.1rem;
     }    /* On mobile, hide header buttons; all actions (including Tabs) are in the Menu dropdown */
     .header-actions {
@@ -1047,9 +1045,7 @@ header h1 {
     max-width: 900px;
     max-height: 90vh;
     overflow-y: auto;
-}
-
-#settings-modal .modal-content > p.muted-text {
+}#settings-modal .modal-content > p.muted-text {
     margin-bottom: 1rem;
 }#settings-modal .settings-section.ap-settings-section {
     margin-top: 1.5rem;