fix: wiki audit — frozen pane fields, CDN versions, API examples - Fix FrozenPane field names: row/column/topLeftCell → rows/cols - Update all CDN URLs from @0.4.0 to @0.5.0 - Update sidebar version to v0.5.0 - Fix FAQ Node.js requirement: 25+ → 24+ - Fix Examples.md: sheetToJson/sheetToCsv take ws not ws.rows - Fix Examples.md: fill({ patternType }) → fill({ pattern }) - Fix cell ref examples: 0-based indexing, encodeCellRef signature - Remove duplicated Browser & CDN section in Getting-Started.md Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs: update all wiki pages for v0.3.0 - Version numbers: v0.2.0/v0.1.9 → v0.3.0 across all pages - CDN URLs: @0.2.0 → @0.3.0 (5 instances) - Test counts: 419 → 437 (157 Rust + 280 TypeScript) - WASM size: ~870 KB → ~939 KB, bundle total ~994 KB - New: Barcode & QR Generation section in API Reference - New: Barcode examples in Examples page - New: v0.3.0 changelog entry with features and bug fixes - Removed duplicate v0.2.0 changelog section - Added validate.rs to Architecture module tables - Added barcode row to migration guide comparisons Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs: update wiki for v0.1.9 — add Architecture, Changelog, Examples, ExcelJS migration, sidebar