Adds .forgejo/workflows/check.yml (and a GitHub mirror) that runs on
every branch push (except main) and on every PR targeting main.
Two parallel jobs:
- rust: cargo check + cargo test, with cargo registry/git/target caches
keyed on Cargo.lock. Installs the minimal Rust toolchain and the
webkit2gtk system deps that the tauri build script needs.
- frontend: npm ci + npm run build (tsc + vite) + npm test (vitest),
with the npm cache keyed on package-lock.json.
The Forgejo workflow uses the ubuntu:22.04 container pattern from
release.yml. The GitHub mirror uses native runners (ubuntu-latest)
since the GitHub mirror exists for portability and uses GitHub-native
actions.
Documents the new workflow in CLAUDE.md alongside release.yml so future
contributors know what CI runs before merge.
