release: v0.2.0

[prashar32]

v0.2.0 — week-1 frictionless-adoption release

Rolls up everything merged since v0.1.2 (#50–#59) and bumps the version markers per the release checklist.

Highlights

• One-line CLI install — go install …/cmd/riskkernel@latest, no clone.
• Three runnable, key-free examples — wrap-your-agent, langchain, mcp.
• Safe default budgets out of the box ($5 / 100 loops / 1h) — a default-behavior change.
• Config-updatable model pricing — RISKKERNEL_PRICING_FILE.
• Fix: LangChain budget halts now actually stop the chain (raise_error); the OpenAI Agents adapter was audited (clean) and got regression tests.

No breaking API changes; forward-compatible with existing v0.1.x state.

Checklist files bumped (§13)

• CHANGELOG.md — [Unreleased] rolled into ## [0.2.0] - 2026-06-04 (+ backfilled the examples / install / LangChain-fix entries that earlier PRs missed); compare links updated; fresh empty [Unreleased].
• SDK → 0.2.0 (pyproject.toml + __init__.py); version.go default → 0.2.1-dev; docs/VISION.md status line.

After merge (the tag flow — do NOT skip the sync)

Per §13, tag the merged commit, not this branch:

git checkout main && git pull            # land the squash-merge first
git tag -a v0.2.0 -m "v0.2.0"            # → release workflow builds + cosign-signs the image
git push origin v0.2.0

Skipping the pull lands the tag on the previous commit and ships stale version markers (this bit v0.1.1). Verify before pushing: git show v0.2.0:sdks/python/pyproject.toml reads 0.2.0. Then verify the image: docker run ghcr.io/prashar32/riskkernel:0.2.0 version.