Use a marked metadata-only directory for both Cargo target and intermediate outputs, reject native targets and output/config overrides, and keep Cargo.lock fixed. Preserve peer scripts while preventing stub files from entering ordinary build caches. Add ten behavior regressions to Preview preparation; these tests record commands and do not substitute for native CI.
Adopt the shared source budgets, local dependency rules and tested Python
checkers. Add the architecture workflow and metadata-only cross-target
tools, and make existing filesystem test waits deterministic.
Document contributor checks in both unreleased notes without claiming
server-side branch protection or native platform validation.
kuddev