The CCtx reset tail already delegated storage reservation and ordering policy
to Rust, but crossed back into C through a redundant callback trampoline.
Project the storage state directly through the existing pointer-sized ABI slot
and invoke the Rust storage operation without the extra C hop. Keep private
workspace/layout callbacks and match-state reset in C, preserve hash -> match
-> storage ordering, and retain allocation-error propagation in Rust tests.
Test Plan:
- ulimit -v 41943040; CARGO_BUILD_JOBS=1 cargo check --manifest-path rust/Cargo.toml --tests
- ulimit -v 41943040; CARGO_BUILD_JOBS=1 cargo clippy --manifest-path rust/cli/Cargo.toml --all-targets -- -D warnings
- ulimit -v 41943040; make -j1
- ulimit -v 41943040; make -j1 -C tests test