- Remove actions/cache@v5 dependency, implement cache API calls directly
using curl, tar, and zstd against Gitea's /_apis/artifactcache/ API
- Drop 'key' input, add required 'key-prefix' and 'key-file' inputs
- Cache key is generated as key-prefix-<sha256-of-key-file>
- Update README with revised inputs and Rust-only examples
Convert the composite action from Checkout to Cache that:
- Stores build files under ~/.cache/ by default
- Auto-generates cache keys from lockfile hashes
- Uses actions/cache@v5 for restore and save
- Supports custom path, key, key-file, and restore-keys inputs
- Exposes cache-hit output for conditional workflow steps
saru