Authored game-mesh reconstruction of sheet_a/b/c; target detail/age: ../breton-stone-house-v2/final.png. Metres, Y-up export, front +Z; photographic Poly Haven CC0 shared shelf.
Cameras: 1920x1080 three-quarter front for every house; rear check and close merchant/tower detail; street lineup and identical clay view; imported GLB is the render source.
Budget: 30–70k triangles per house, <=350k total, <=25 MB GLB, <=10 shared materials, base/normal <=1024 and ORM512. Target <=9 material draws per house. Actual runtime counters are measured separately from offline estimates.
Three revision cap, at most two independent critic passes per revision. First merchant export is revision0; geometry-contract and material corrections are revision1.
Outputs: medieval-hero-houses.glb, final_1..6.png, lineup.png, clay_lineup.png, nodes.json, NOTES.md, audit evidence. No claim of Forge in-game integration without an actual runtime capture.