fix(frontend): drop the three .modal-overlay copies the comment-preceded rule regex skipped — components.css owns it (#2831)

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

frontend/src/components/SystemsSection.vue

@@ -515,11 +515,4 @@ async function confirmDelete() {
 }
 .skel-row--short { width: 65%; }
 
-/* ── Modal ────────────────────────────────────────────────────── */
-.modal-overlay {
-  position: fixed; inset: 0;
-  background: var(--fs-overlay);
-  display: flex; align-items: center; justify-content: center;
-  z-index: 200;
-}
 </style>

frontend/src/views/ProjectListView.vue

@@ -559,16 +559,6 @@ function overallPct(project: Project): { total: number; pct: number } {
   color: var(--fs-text-tertiary);
 }
 
-/* Modal */
-.modal-overlay {
-  position: fixed;
-  inset: 0;
-  background: var(--fs-overlay);
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  z-index: 200;
-}
 .modal-card {
   max-width: 480px;
   display: flex;

frontend/src/views/SnippetListView.vue

@@ -903,15 +903,6 @@ function usageTitle(s: SnippetListItem): string {
 }
 
 /* Merge modal */
-.modal-overlay {
-  position: fixed;
-  inset: 0;
-  background: var(--fs-overlay);
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  z-index: 200;
-}
 .modal-card {
   max-width: 460px;
   display: flex;