ci: index version floor (min_mcpp 0.0.85) + resolver-grammar strict lint#65
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…ain, P1) - index.toml: [index] min_mcpp = 0.0.85 — the index→client contract; travels with the tree (publish script packs it into the artifact). mcpp >= 0.0.85 enforces it at index-open (E0006 + upgrade hint). - validate.yml: MCPP_VERSION 0.0.81 → 0.0.85; lint gains a second validator — `mcpp xpkg parse` (strict) with the PINNED binary, so lint's grammar and users' build grammar are identical by construction (the lua5.4 loadfile check stays: it guards the xim side, which executes real Lua). - tools/publish_mcpp_index.sh: pack index.toml into the artifact tree. - docs: floor mechanism + long-bracket / scan_overrides schema rows. Rollout rule now mechanical: descriptors needing newer grammar cannot merge until this pin+floor pair moves — 'floor first, migration after'. Design: mcpp .agents/docs/2026-07-08-index-version-semantics-and- descriptor-grammar-design.md (D3) + index-side adoption plan (P1).
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P1 of the 0.0.85 adoption train (design: mcpp
.agents/docs/2026-07-08-index-version-semantics-and-descriptor-grammar-design.mdD2/D3; execution detail in this repo's.agents/docs/2026-07-08-index-side-adoption-plan.md).[index] min_mcpp = "0.0.85"— the index→client contract. Travels with the tree (publish_mcpp_index.shnow packs it into the artifact); mcpp ≥ 0.0.85 enforces it at index-open (E0006+ upgrade hint;MCPP_INDEX_FLOOR=ignoredebug hatch).MCPP_VERSION0.0.81 → 0.0.85; lint gains a second validator —mcpp xpkg parsewith the pinned binary (strict: unknown mcpp-segment keys fail). Lint's grammar and users' build grammar are now identical by construction; the lua5.4loadfilecheck stays (guards the xim side, which executes real Lua).scan_overridesschema rows.Rollout rule now mechanical: descriptors needing newer grammar cannot merge until this pin+floor pair moves — "floor first, migration after".
Verified locally: all 42 existing descriptors pass
mcpp xpkg parse(strict, 0.0.85) with zero warnings;min_mcpp=9.9.9fixture → E0006 + resolve stop; floor=0.0.84 → builds; ignore-hatch works.