fix: atomic review log helpers + platform-agnostic templates (v0.8.5) (#209)

* fix: add gstack-review-log and gstack-review-read atomic helpers

Branch names with `/` break review log filepaths when Claude Code runs
multi-line bash blocks as separate shell invocations. These two scripts
encapsulate the full operation in a single command.

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

* fix: replace multi-line eval+mkdir+echo blocks with atomic helpers

- Review log writes now use gstack-review-log (single command)
- Review dashboard reads now use gstack-review-read (single command)
- Remaining source+mkdir blocks use && chaining for variable persistence
- Regenerated all SKILL.md files

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

* fix: remove Rails-isms — platform-agnostic templates and checklist

- review/checklist.md: multi-framework examples (Rails/Node/Python/Django)
- plan-ceo-review: framework-agnostic grep + generic error table
- plan-eng-review: "corresponding test" not "JS or Rails test"
- CLAUDE.md: Platform-agnostic design principle + Testing section

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

* test: update tests for gstack-review-log/read helpers

- codex review log test: check for gstack-review-log instead of reviews.jsonl
- dashboard resolver tests: check for gstack-review instead of reviews.jsonl

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

* chore: bump version and changelog (v0.8.5)

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

---------

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

test/gen-skill-docs.test.ts

@@ -354,7 +354,7 @@ describe('REVIEW_DASHBOARD resolver', () => {
   for (const skill of REVIEW_SKILLS) {
     test(`review dashboard appears in ${skill} generated file`, () => {
       const content = fs.readFileSync(path.join(ROOT, skill, 'SKILL.md'), 'utf-8');
-      expect(content).toContain('reviews.jsonl');
+      expect(content).toContain('gstack-review');
       expect(content).toContain('REVIEW READINESS DASHBOARD');
     });
   }

test/skill-validation.test.ts

@@ -1167,7 +1167,7 @@ describe('Codex skill', () => {
   test('codex/SKILL.md contains review log persistence', () => {
     const content = fs.readFileSync(path.join(ROOT, 'codex', 'SKILL.md'), 'utf-8');
     expect(content).toContain('codex-review');
-    expect(content).toContain('reviews.jsonl');
+    expect(content).toContain('gstack-review-log');
   });
 
   test('codex/SKILL.md uses which for binary discovery, not hardcoded path', () => {