[sawradip]

The computed boxes of a book's lines (rects) are often a few letters off where a sentence starts or ends inside a printed line: the indexer only knows where each whole printed line is, and places a cut by counting characters. A team will correct them by hand in the chalkbook dashboard; this stores their corrections.

• Step 6 of the schema: book_lines gets rects_manual, rects_by, rects_at (added columns only; nothing existing changes).
• PUT /v1/books/<slug>/lines/<id>/rects { rects, by } (author): the line's boxes as a person drew them, or null for the computed ones again. A live line of the book only (404, 409 retired); boxes on the page (x, y ≥ 0, w, fs > 0, 1 to 200).
• Reads (lines, lines/all) return the drawn boxes as rects when there are any, with rectsManual and rectsBy. The PathshalaX reader shows corrections with no change on its side.
• lines/sync compares and writes only the computed boxes, so a drawn line is never counted as changed and never overwritten; when a line's words change under the same key (textHash), its drawing is dropped (it belonged to the old words).
• Spec: spec/1.2/registry-api.md §11 (the line record, the new request).

Tests in highlights.test.ts: drawn boxes read instead of computed ones, kept by a sync with other computed boxes, reset by null, dropped when the words change; author only, 404, 409, invalid boxes.

pnpm check passes. (The first run timed out once in adopt.test.ts, untouched here; it passes alone and on the second full run.)

Deploying this changes the production library: it waits for the owner's go.

🤖 Generated with Claude Code