c145bf86b9
- src/render.rs: Rewrite with event-based pulldown-cmark parsing. Intercepts CodeBlock events and applies tree-sitter highlighting. 4 new tests covering highlighted and unhighlighted code blocks. - src/highlight.rs: Fix HtmlRenderer callback to return attributes only (not full span tags). Static HTML_ATTRS array for zero-alloc. - static/style.css: Add 20 hl-* CSS classes with CSS variables. Light and dark mode via prefers-color-scheme. Supported languages: rust, bash, json. Phase 2 complete.