next.js

0f9bf704 - Phase 4: Integrate syntax highlighting into code frame rendering

Phase 4: Integrate syntax highlighting into code frame rendering Added complete syntax highlighting integration: Highlighting Architecture: - Extract highlights once at the start of render_code_frame() - Apply highlights "late" after line truncation to avoid column offset issues - adjust_highlights_for_truncation() handles truncated views correctly - Markers are filtered and adjusted for the visible range ANSI Stripping: - Added strip_ansi_codes() utility for testing - Strips escape sequences while preserving text content Testing: - Added test_highlighting_doesnt_break_formatting() integration test - Verifies highlighting with use_colors=false produces identical output - Verifies ANSI-stripped output matches plain output - Ensures highlighting doesn't mess up basic formatting Additional Tests: - test_strip_ansi_codes: Verify ANSI stripping works - test_strip_ansi_codes_preserves_plain_text: No-op on plain text - test_adjust_highlights_for_truncation: Verify marker adjustment All 29 tests pass. Highlighting is fully functional and doesn't break any existing functionality. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>