v0.2.2
Supported Lean toolchain window: add 4.31.0-rc2
Lean 4.31.0-rc2 ships a byte-identical lean.h to 4.31.0-rc1, so it joins the same ABI-equivalence entry in
SUPPORTED_TOOLCHAINS and becomes the new head of the supported window (now 4.26.0 through 4.31.0-rc2). No public API or
layout change; the workspace test suite passes against rc2 on the local toolchain sweep.
Release recovery covers all publishable crates
The release-recover.yml recovery workflow now walks every publishable crate in dependency order, so a partial publish
that stalls on any crate—not just the tail—can be completed without burning a version.