feat: URL preview TDS styling, settings description update

- UrlPreview.tsx: add data-url-preview attribute for CSS targeting
- lotus-terminal.css.ts: dark cyan border-left accent + transparent bg
  for URL preview cards in TDS mode (dark + light variants)
- General.tsx: mention Escape-to-skip in boot animation description

src/lotus-terminal.css.ts

@@ -660,3 +660,29 @@ globalStyle(`body.${lotusTerminalBodyClass} [data-gif-terminal] ::-webkit-scroll
   borderRadius: '2px',
 });
 
+// ── URL preview cards (terminal mode) ───────────────────────────────────────
+globalStyle(`body.${lotusTerminalBodyClass} [data-url-preview]`, {
+  backgroundColor: 'rgba(3,12,20,0.92)',
+  border: '1px solid rgba(0,212,255,0.22)',
+  borderLeft: '3px solid rgba(255,107,0,0.60)',
+  borderRadius: '4px',
+  color: '#e8edf5',
+});
+globalStyle(`body.${lotusTerminalBodyClass} [data-url-preview] a`, {
+  color: 'rgba(0,212,255,0.85) !important' as any,
+});
+globalStyle(`body.${lotusTerminalBodyClass} [data-url-preview] a:hover`, {
+  color: 'rgba(255,107,0,0.90) !important' as any,
+  textShadow: '0 0 6px rgba(255,107,0,0.30)',
+});
+// light TDS
+globalStyle(`html[data-theme="light"] body.${lotusTerminalBodyClass} [data-url-preview]`, {
+  backgroundColor: 'rgba(240,244,252,0.97)',
+  border: '1px solid rgba(0,98,184,0.22)',
+  borderLeft: '3px solid rgba(196,78,0,0.55)',
+  color: '#2d3d56',
+});
+globalStyle(`html[data-theme="light"] body.${lotusTerminalBodyClass} [data-url-preview] a`, {
+  color: '#0062b8 !important' as any,
+});
+