chore(ci): try Swatinem/rust-cache for target/ caching#25478

Draft

pront wants to merge 7 commits into

explore/rust-cache

Commits on May 20, 2026

chore(ci): prototype Swatinem/rust-cache for target/ + cargo caching

pront
and
claude
committed
chore(ci): temp - save cache on all refs to seed prototype

pront
and
claude
committed
chore(ci): use shared-key (key was wrong semantically)

pront
and
claude
committed
chore: temp source touch to trigger Rust CI

pront
and
claude
committed
chore(ci): drop redundant runner.os from shared-key

pront
and
claude
committed
chore(ci): drop shared-key, partition cache per job

pront
and
claude
committed
chore: touch bump to trigger second CI run for cache hit test

pront
and
claude
committed