feat: v1.19.0 — NSIS Installer, Tray Removed, Storage Warning, Theme Polish

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/styles/layout.css

@@ -413,6 +413,40 @@
   cursor: default;
 }
 
+/* ─── Offline Storage Full Banner ─── */
+.offline-storage-full-banner {
+  display: flex;
+  align-items: center;
+  gap: 0.75rem;
+  padding: 10px 16px;
+  margin: 0 0 1rem 0;
+  background: color-mix(in srgb, var(--color-danger, #e53935) 12%, var(--bg-card));
+  border: 1px solid color-mix(in srgb, var(--color-danger, #e53935) 40%, transparent);
+  border-radius: var(--radius-md);
+  font-size: 13px;
+  color: var(--text-primary);
+  line-height: 1.4;
+}
+
+.offline-storage-full-banner span {
+  flex: 1;
+}
+
+.offline-storage-full-dismiss {
+  background: none;
+  border: none;
+  cursor: pointer;
+  color: var(--text-muted);
+  font-size: 18px;
+  line-height: 1;
+  padding: 0 2px;
+  flex-shrink: 0;
+}
+
+.offline-storage-full-dismiss:hover {
+  color: var(--text-primary);
+}
+
 /* ─── Player Bar ─── */
 .player-bar {
   grid-area: player;