Upstream parity watch: tracked GitHub source changed

[github-actions]

Detected upstream drift in one or more tracked upstream GitHub sources.

• Workflow run: https://github.com/iam-brain/opencode-codex-auth/actions/runs/23151846892
• Next step: run npm run check:upstream, review diffs, then apply updates.
• After syncing, run npm run check:upstream:update and commit docs/development/upstream-watch.json.