v0.0.0: starting

fix(docs): add package-lock.json for npm ci in docs workflow (#2)

## Summary
- Adds `website/package-lock.json` generated from `package.json`
- Required by `npm ci` in the `docs.yml` workflow (which failed on the
initial dispatch)

## Test plan
- [ ] `docs.yml` workflow completes successfully after merge

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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>