Read WebP/JPEG comps through a sibling PNG cache instead of forcing PNG

comp-spec, comp-diff, build-phase, font-match, and generate-image now decode any comp raster via loadRaster(), converting non-PNG input to <file>.png next to the source. Sessions used to hit 'not a PNG' and rewrite the .webp in place with PNG bytes, which broke transcript replay (a later step rewrites the comp beyond the cut) and left a mislabeled file.

AI-assisted (Claude Code).
This commit is contained in:
Paul Bakaus
2026-08-28 06:13:59 +05:00
committed by Abdul Wahab
parent 95294e464a
commit 48350ffb14
7 changed files with 63 additions and 15 deletions
+2 -2
View File
@@ -35,7 +35,7 @@ import fs from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';
import { createRequire } from 'node:module';
import { decodePng, encodePng } from './lib/png.mjs';
import { decodePng, encodePng, loadRaster } from './lib/png.mjs';
import { crop } from './lib/raster.mjs';
import { fingerprint, distance } from './lib/font-fingerprint.mjs';
import { loadFontIndex, candidatesFromIndex, MIN_RANK_CAP_PX } from './lib/font-index.mjs';
@@ -311,7 +311,7 @@ async function main() {
if (!spec) { console.error(`font-match: no spec at ${specPath}; run comp-spec.mjs first`); process.exit(1); }
const region = spec.regions.find((r) => r.id === id);
if (!region) { console.error(`font-match: no region ${id}; ids: ${spec.regions.map((r) => r.id).join(', ')}`); process.exit(1); }
const comp = decodePng(fs.readFileSync(spec.comp));
const comp = loadRaster(spec.comp).image;
const c = crop(comp, region.px.x, region.px.y, region.px.w, region.px.h);
const fp = fingerprint(c);
if (!fp) {