feat: review chaining + commit hash staleness tracking (v0.8.3) (#206)

* feat: review chaining + commit hash staleness tracking

Each plan review skill now suggests the next review via AskUserQuestion:
- CEO review → eng review (required gate) + design review (if UI scope)
- Design review → eng review + CEO review (if product gaps)
- Eng review → design review (if UI changes) + CEO review (soft suggestion)

Reviews now track HEAD commit hash in JSONL entries for deterministic
staleness detection. Dashboard compares stored hash against current HEAD
and reports drift. Respects skip_eng_review config in chaining logic.

Also adds commit tracking to design-review-lite entries.

* chore: regenerate SKILL.md files for review chaining

* chore: bump version and changelog (v0.8.3)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

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

CHANGELOG.md

@@ -1,5 +1,14 @@
 # Changelog
 
+## [0.8.3] - 2026-03-19
+
+### Added
+
+- **Plan reviews now guide you to the next step.** After running `/plan-ceo-review`, `/plan-eng-review`, or `/plan-design-review`, you get a recommendation for what to run next — eng review is always suggested as the required shipping gate, design review is suggested when UI changes are detected, and CEO review is softly mentioned for big product changes. No more remembering the workflow yourself.
+- **Reviews know when they're stale.** Each review now records the commit it was run at. The dashboard compares that against your current HEAD and tells you exactly how many commits have elapsed — "eng review may be stale — 13 commits since review" instead of guessing.
+- **`skip_eng_review` respected everywhere.** If you've opted out of eng review globally, the chaining recommendations won't nag you about it.
+- **Design review lite now tracks commits too.** The lightweight design check that runs inside `/review` and `/ship` gets the same staleness tracking as full reviews.
+
 ## [0.8.2] - 2026-03-19
 
 ### Added