v0.12.1

First release cut via the new tag-triggered CI pipeline (scripts/release.sh → release.yml → OIDC Trusted Publishing to both jrag-cli and java-codebase-rag, then this Release).

Highlights since 0.12.0

• Multi-system workspace indexing — jrag install/init now accepts a parent source-root spanning nested Java systems and produces one merged index (#469).
• Benchmark suite — corpora, oracle, frozen ground truth, agent harness + grading, reframed around the jrag CLI, with methodology/reporting fixes (#455, #460, #461, #462, #468).
• Graph progress-state fix after interruption (#452).
• Release pipeline — tag-triggered CI dual PyPI publish, release notes, sync-guaranteed (#470).

Install

```bash
pip install -U jrag # or: pip install -U java-codebase-rag (legacy alias)
```

Both PyPI names ship 0.12.1 in lockstep. Full history: https://github.com/HumanBean17/jrag/commits/master