Cross-platform hardening — first release with green CI on macOS / Linux / Windows.
- New CI matrix: 3 OS × 3 jobs (test/typecheck/build), no continue-on-error.
- Path separator fixes in genome/, session-log/, local/, anthropic/.
- CRLF/LF tolerance in jsonl, init, session-log, fitness.
- Exhaustive switch defaults in tokens to prevent NaN propagation.
- Test count 44 → 120 (+76).
- package.json hardened (repo URL, keywords, engines, files allowlist, publishConfig).
- README rewritten with platform-support statement, per-subpath quickstart, compatibility matrix.
- Six new examples (one per major subpath) with explicit cross-platform notes.