test: gate-tier AskUserQuestion floor tests for all plan-* review skills

Adds 4 finding-floor tests (one per plan-* skill) that catch the May
2026 transcript-bug class — model wrote a plan and called ExitPlanMode
without firing any review-phase AskUserQuestion. Asserts via
runPlanSkillFloorCheck that ANY non-permission AUQ render fires before
the agent reaches plan_ready.

Verified:
- Eng floor: passed in 59s
- CEO floor: passed in 197s
- Design floor: passed
- Devex floor: passed
- Total ~$2-6 per CI run; only triggers on diff against the 4 plan-*
  templates, the shared resolver review.ts, the seeds fixture, or the
  PTY runner helper.

Fixtures live in test/fixtures/forcing-finding-seeds.ts, one constant
per skill. Each seed is engineered to force at least one obvious
finding under that skill's review focus (architectural smell for eng,
scope-creep for ceo, UI-slop for design, painful onboarding for devex).

Touchfiles wiring:
- E2E_TOUCHFILES: 4 plan-*-finding-floor entries with deps on the
  matching skill template, the shared resolver, the seeds fixture,
  and the PTY runner helper
- E2E_TIERS: all 4 entries marked 'gate'
- touchfiles.test.ts: count assertion bumped 21→22 with explicit
  plan-ceo-finding-floor containment check

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

test/touchfiles.test.ts

@@ -103,8 +103,10 @@ describe('selectTests', () => {
     // auto-decide-preserved also depend on plan-ceo-review/**
     expect(result.selected).toContain('autoplan-auto-mode');
     expect(result.selected).toContain('auto-decide-preserved');
-    expect(result.selected.length).toBe(21);
-    expect(result.skipped.length).toBe(Object.keys(E2E_TOUCHFILES).length - 21);
+    // v1.27+ gate-tier reviewCount-floor regression for transcript bug
+    expect(result.selected).toContain('plan-ceo-finding-floor');
+    expect(result.selected.length).toBe(22);
+    expect(result.skipped.length).toBe(Object.keys(E2E_TOUCHFILES).length - 22);
   });
 
   test('global touchfile triggers ALL tests', () => {