Merge origin/main (v1.91.7.0) into test-audit-reduction

Keep both intents: v1.91.7.0's functional QA, docsync and exploratory
paid cases and their free owners stay; this branch's deletions stay
deleted. main's new paid keys follow the derived-closure touchfile rule
(free *.test.ts paths dropped, static helper/fixture closure added), its
new helper-only tests join the ratchet baseline, and its free selection
examples that named free test files now assert the derived selection.

Periodic CI keeps seven slices without the retired Autoplan slice; the
gate census keeps seven single-worker slices with --skip-judges. Wall
and census literals are recomputed from the merged planner, durations
are re-recorded on Ubicloud, and VERSION stays 1.91.8.0 above 1.91.7.0.

test/ship-skip-selection.test.ts

@@ -0,0 +1,41 @@
+import { expect, test } from 'bun:test';
+import { E2E_TIERS, E2E_TOUCHFILES, LLM_JUDGE_TOUCHFILES, selectTests } from './helpers/touchfiles';
+import { computePaidCaseSelection } from '../scripts/test-paid-shards';
+
+const id = 'ship-skipped-queued-finding';
+
+test.each([
+  'scripts/resolvers/review.ts', 'scripts/resolvers/index.ts',
+  'ship/sections/review-army.md.tmpl', 'ship/sections/adversarial.md.tmpl',
+  'ship/sections/manifest.json', 'bin/gstack-review-log', 'bin/gstack-review-read',
+  'bin/gstack-slug', 'bin/gstack-config', 'bin/gstack-brain-enqueue',
+  'lib/review-evidence.ts', 'test/helpers/ship-skip-actor.ts', 'test/helpers/scratch-repo.ts',
+  'test/skill-e2e-ship-skip.test.ts', '.github/docker/Dockerfile.ci',
+])('%s selects the native queued-Skip regression', file => {
+  expect(selectTests([file], E2E_TOUCHFILES).selected).toContain(id);
+  expect(E2E_TIERS[id]).toBe('gate');
+});
+
+test('native-only fixture files do not select quality judges', () => {
+  expect(selectTests(['test/helpers/ship-skip-actor.ts', 'test/ship-skip-actor.test.ts',
+    'test/skill-e2e-ship-skip.test.ts', 'test/helpers/scratch-repo.ts'], LLM_JUDGE_TOUCHFILES).selected).toEqual([]);
+  expect(selectTests(['qa-only/SKILL.md.tmpl'], E2E_TOUCHFILES).selected).not.toContain(id);
+});
+
+test('scratch identity helper selects only queued-Skip and preserves its fast-profile deferral', () => {
+  const changedFiles = ['test/helpers/scratch-repo.ts'];
+  expect(selectTests(changedFiles, E2E_TOUCHFILES).selected).toEqual([id]);
+  const full = computePaidCaseSelection({ profile: 'full', env: {}, changedFiles });
+  expect(full.selection).toEqual({ e2e: [id], judges: [] });
+  const pr = computePaidCaseSelection({ profile: 'pr', env: {}, changedFiles });
+  expect(pr.selection).toEqual({ e2e: [], judges: [] });
+  expect(pr.coverage?.mode).toBe('pr');
+  expect(pr.coverage?.deferred).toEqual([{
+    id, tier: 'gate', reason: 'Broad gate census/release coverage; outside the fast PR profile',
+  }]);
+});
+
+test.each(['test/helpers/qa-checkpoint-evidence.ts', 'test/fixtures/qa-only-charter-public.json'])
+  ('%s selects the native QA-only preparation gate', file => {
+    expect(selectTests([file], E2E_TOUCHFILES).selected).toContain('qa-only-no-fix');
+  });