Document upstream's vYY.<release-seq>.<patch> scheme (year, sequential
release-in-year, patch) in docs/ci-cd.md + CLAUDE.md so we follow it going
forward: <release-seq> is NOT the calendar month (v25.2.0 shipped in June,
v26.3.0 in Feb), it's a per-year counter that resets each January. v26.3.1
= our infra-only rebuild of upstream 26.3.0; v26.4.0 reserved for the first
release with app changes. Also notes the [skip ci]-on-a-tagged-commit gotcha.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
timothyandClaude Opus 4.8
c7aad4689e