chore(examples): hero image diet - catalog preview shrinks 89%#175
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…review -89% engine-hero.png (1672x941, 1.81MB, 24bpp no-alpha) was embedded raw into feature-catalog.pdf, making the committed preview 34x heavier than the rest of the gallery combined. Downscaled to 1400px and recompressed as JPEG q85 (170KB) - still oversampled for the ~520pt display size in both EngineShowcase and the catalog image block. feature-catalog.pdf drops 1813KB -> 194KB; the whole committed gallery goes from 2.3MB to ~0.7MB. References swapped in EngineShowcase and FeatureCatalogExample; the README hero render is unaffected (source still oversamples its raster DPI).
This was referenced Jun 12, 2026
# Conflicts: # assets/readme/examples/feature-catalog.pdf
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What
engine-hero.png(1672×941, 1.81 MB, 24bpp — no alpha) was embedded raw intofeature-catalog.pdf, making that one committed preview heavier than the rest of the gallery combined (the next-largest file is 53 KB).EngineShowcaseand the catalog's image block.feature-catalog.pdf: 1 813 KB → 194 KB (−89%); the whole committed gallery drops from 2.3 MB to ~0.7 MB.EngineShowcase,FeatureCatalogExample), old PNG removed. The committed README hero render is untouched — the new source still oversamples its raster DPI, so its pixels would be identical.Verification
Catalog regenerated end-to-end with the JPEG source (PDFBox embeds it natively); examples CI smoke covers the run. No library code touched.