feat: zcatui v2.1 - 7 new widgets, innovations, and technical docs
New widgets (Phase 1-3):
- Spinner: 10 animation styles (dots, line, arc, pulse, etc.)
- Help: Keybinding display with categories
- Viewport: Content scrolling (static/scrollable)
- Progress: Multi-step progress with styles
- Markdown: Basic markdown rendering (headers, lists, code)
- DirectoryTree: File browser with icons and filters
- SyntaxHighlighter: Code highlighting (Zig, Rust, Python, etc.)
Innovation modules:
- testing.zig: Widget testing framework (harness, simulated input, benchmarks)
- theme_loader.zig: Theme hot-reload from JSON/KV files
- serialize.zig: State serialization, undo/redo stack
- accessibility.zig: A11y support (ARIA roles, screen reader, high contrast)
Layout improvements:
- Flex layout with JustifyContent and AlignItems
Documentation:
- TECHNICAL_REFERENCE.md: Comprehensive 1200+ line technical manual
Stats: 67 files, 34 widgets, 250+ tests
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
reugenio
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