v0.3.1

What changed

• Fix Custom Tools build, version, log, publish, and cancellation requests for the concise production API routes. Tool generations are now sent through X-Tamarind-Tool-Generation.
• Add typed Pipelines run and node-run molecule resources.

Verification

• 396 tests passed locally.
• Generated-contract freshness, type checking, lint, package build, and wheel smoke checks passed.
• GitHub Actions passed on Python 3.10–3.14, macOS, and Windows.