feat: interactive /plan-design-review + CEO invokes designer + 100% coverage (v0.6.4) (#149)

* refactor: rename qa-design-review → design-review

The "qa-" prefix was confusing — this is the live-site design audit with
fix loop, not a QA-only report. Rename directory and update all references
across docs, tests, scripts, and skill templates.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* feat: interactive /plan-design-review + CEO invokes designer

Rewrite /plan-design-review from report-only grading to an interactive
plan-fixer that rates each design dimension 0-10, explains what a 10
looks like, and edits the plan to get there. Parallel structure with
/plan-ceo-review and /plan-eng-review — one issue = one AskUserQuestion.

CEO review now detects UI scope and invokes the designer perspective
when the plan has frontend/UX work, so you get design review
automatically when it matters.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* test: validation + touchfile entries for 100% coverage

Add design-consultation to command/snapshot flag validation. Add 4
skills to contributor mode validation (plan-design-review,
design-review, design-consultation, document-release). Add 2 templates
to hardcoded branch check. Register touchfile entries for 10 new
LLM-judge tests and 1 new E2E test.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* test: LLM-judge for 10 skills + gstack-upgrade E2E

Add LLM-judge quality evals for all uncovered skills using a DRY
runWorkflowJudge helper with section marker guards. Add real E2E
test for gstack-upgrade using mock git remote (replaces test.todo).
Add plan-edit assertion to plan-design-review E2E.

14/15 skills now at full coverage. setup-browser-cookies remains
deferred (needs real browser).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: add bisect commit style to CLAUDE.md

All commits should be single logical changes, split before pushing.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* chore: bump version and changelog (v0.6.4.0)

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

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -1,5 +1,18 @@
 # Changelog
 
+## [0.6.4.0] - 2026-03-17
+
+### Added
+
+- **`/plan-design-review` is now interactive — rates 0-10, fixes the plan.** Instead of producing a report with letter grades, the designer now works like CEO and Eng review: rates each design dimension 0-10, explains what a 10 looks like, then edits the plan to get there. One AskUserQuestion per design choice. The output is a better plan, not a document about the plan.
+- **CEO review now calls in the designer.** When `/plan-ceo-review` detects UI scope in a plan, it activates a Design & UX section (Section 11) covering information architecture, interaction state coverage, AI slop risk, and responsive intention. For deep design work, it recommends `/plan-design-review`.
+- **14 of 15 skills now have full test coverage (E2E + LLM-judge + validation).** Added LLM-judge quality evals for 10 skills that were missing them: ship, retro, qa-only, plan-ceo-review, plan-eng-review, plan-design-review, design-review, design-consultation, document-release, gstack-upgrade. Added real E2E test for gstack-upgrade (was a `.todo`). Added design-consultation to command validation.
+- **Bisect commit style.** CLAUDE.md now requires every commit to be a single logical change — renames separate from rewrites, test infrastructure separate from test implementations.
+
+### Changed
+
+- `/qa-design-review` renamed to `/design-review` — the "qa-" prefix was confusing now that `/plan-design-review` is plan-mode. Updated across all 22 files.
+
 ## [0.6.3.0] - 2026-03-17
 
 ### Added