Add asset listing and delete

src/main/resources/static/css/styles.css

@@ -66,9 +66,20 @@ body {
     width: 100%;
     height: 100%;
     border: none;
+    filter: brightness(0.35) saturate(0.7);
 }
 
-.overlay canvas, .broadcast-body canvas {
+.overlay canvas {
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    pointer-events: auto;
+    z-index: 2;
+}
+
+.broadcast-body canvas {
     position: absolute;
     top: 0;
     left: 0;
@@ -100,3 +111,45 @@ body {
 .panel li {
     margin: 6px 0;
 }
+
+.asset-list {
+    display: flex;
+    flex-direction: column;
+    gap: 8px;
+    margin-top: 12px;
+}
+
+.asset-item {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 10px 12px;
+    border-radius: 8px;
+    background: #111827;
+    border: 1px solid #1f2937;
+    cursor: pointer;
+}
+
+.asset-item.selected {
+    border-color: #7c3aed;
+    box-shadow: 0 0 0 1px rgba(124, 58, 237, 0.6);
+}
+
+.asset-item .meta {
+    display: flex;
+    flex-direction: column;
+    gap: 4px;
+}
+
+.asset-item small {
+    color: #94a3b8;
+}
+
+.asset-item .actions {
+    display: flex;
+    gap: 8px;
+}
+
+.asset-item.hidden {
+    opacity: 0.6;
+}