chore: bump version and changelog (v0.6.4.0)

Co-Authored-By: Claude Opus 4.6 <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

VERSION

@@ -1 +1 @@
-0.6.3.0
+0.6.4.0