fix(test): kebab testNames for section-loading E2Es to match TOUCHFILES keys

The two section-loading E2E tests used display-form testNames ('/ship
section-loading', '/plan-ceo-review section-loading') while every other E2E
testName and their E2E_TOUCHFILES keys are kebab. The completeness gate does an
exact `name in E2E_TOUCHFILES` check, so it failed (pre-existing on main); diff-
based selection also couldn't match them. Align to ship-section-loading /
plan-ceo-section-loading.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

test/skill-e2e-plan-ceo-review-section-loading.test.ts

@@ -74,7 +74,7 @@ describeE2E('/plan-ceo-review section-loading E2E (periodic, SDK capture)', () =
           'Review the plan in PLAN.md. Hold the current scope (HOLD SCOPE mode) — do not challenge or expand scope. Run the full CEO review and produce the review report.',
         requiredSections: REQUIRED_SECTIONS,
         reportMarker: /GSTACK REVIEW REPORT|COMPLETION SUMMARY|review/i,
-        testName: '/plan-ceo-review section-loading',
+        testName: 'plan-ceo-section-loading',
         runId,
       });