Replace static overlay with client-side canvas rendering. Left panel
shows clickable OCR lines with font controls (dropdown + size slider).
Right panel renders green text overlay on the document via canvas.
Fonts loaded from backend TTF files using the FontFace API.
New endpoints: GET /api/fonts, GET /api/font/{id}
Co-Authored-By: Claude Opus 4.6 <[email protected]>
Instead of detecting one font per page, detect the font for each line
independently. The previous line's font is used as a prior — if it
scores within 15% of the best candidate, it's kept for consistency.
This handles documents with mixed fonts (bold headers, regular body,
different sections).
Also: redirect / to the static UI, fix data endpoint to return
per-line font info.
Co-Authored-By: Claude Opus 4.6 <[email protected]>
Adds POST /api/upload (runs full pipeline: rasterize, OCR, font detect,
overlay), GET endpoints for original/overlay images and OCR data JSON.
Also adds python-multipart, anyio, and pytest-anyio dependencies.
Co-Authored-By: Claude Opus 4.6 <[email protected]>
