v0.33.1 — document v0.33.0 commands + Interactive Gate Mode (#81)

Documentation

• v0.33.0 exploration commands + Interactive Gate Mode were undocumented in
  the canonical SKILL.md / AGENTS.md (#81) — invisible to skill-discovery
  hosts that never run --help. Added Quick Reference rows for explore,
  jd-check --explain, enrich --candidates + bullets-compare,
  personas-compare --with-scores, run --branch/--branches/--adopt, plus
  curate/emphasis/review-diff; a new Interactive Gate Mode procedure
  subsection (presets autopilot/checkpoints/full_review, the G1–G8 model,
  the run --interactive → decide gate file → run --continue loop); and a
  Pitfalls note on the truthful-lever guarantees. Mirrored into AGENTS.md.
  A new tests/test_skill_spec.py drift guard asserts every top-level CLI
  command (and the v0.33.0 sub-flags) appears in SKILL.md, so a future command
  fails CI until documented.