Backend: add layout_metrics (avg_row_height_px, font_size_suggestion_px)
to build-grid response for faithful grid reconstruction.
Frontend: rewrite GridTable from HTML <table> to CSS Grid layout.
Column widths are now proportional to the OCR-measured x_min/x_max
positions. Row heights use the average content row height from the
scan. Column and row resize via drag handles (Excel-like).
Font: add Noto Sans (supports IPA characters) via next/font/google.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The Docker container cannot reach Google Fonts, causing build failures.
Switch to bundled local font file using next/font/local.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Remove communication, infrastructure, and development categories from
navigation (now in Admin Core on port 3008). Rename Admin v2 to
Admin Lehrer KI in sidebar, header, and browser title.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
