4.1.1

Patch release: two fixes found while reviewing 4.1.0 and measuring the demo.

🐛 Bug Fixes

• A fenced code block inside a list item no longer grows a stray empty code block after the list. The fence scanner accepted an opener behind a list marker but rejected its closer once the item's content indent reached four spaces — every nested bullet and every numbered step from 10. up — so the fence looked open forever and the completer appended a second closer, on complete content too. Closers are now measured against the opener's depth, and the completer emits its own closer at that depth. Predates 4.0.
• An unterminated fence inside a blockquote or alert is closed inside it (`> ```) instead of at column 0, where it ended the quote and opened a fresh top-level fence.

⚡ Streaming animation

• A bulk update of content is no longer animated; only streamed appends are. Replacing a partial document with a full one — the demo's "Show All", a 5% prefix followed by the whole 59 KB README — mounted ~10,000 word spans that each started a CSS animation in the same frame: roughly two seconds of stalled main thread, identical since before 4.0. Each update is now classified as the first parse, a streamed append, or bulk (a replacement, or a single append of more than ~2 KB), and each block captures that answer when its own text changes. Measured on the demo: first paint 880 ms → 370 ms, zero frames over 100 ms, and streaming still animates word by word. animateOnMount and static are unchanged.

Tests 835 → 843 node, 42 → 43 browser; svelte-check 0.