test: derive paid touchfiles from each eval's static closure (E)

touchfiles.test.ts now checks, per key, that the paid file's static
test/helpers and test/fixtures closure (plus fixture paths it names in string
literals) is covered, and names the file, path, chain and key to fix when it is
not. Free *.test.ts files are no longer touchfiles, so editing a free replay
test stops selecting paid evals: 950 entries removed, 653 real closure paths
added. The hand-copied inventories go: periodic-fixture-selection,
fake-impeccable-touchfiles and 45 per-file selection examples. Selection for
the sample edits (plan-eng-review template, claude-pty-runner,
plan-count-fixture, gstack-config) loses no case under either profile.
CONTRIBUTING documents the rule and its lower bound.

test/ceo-mode-preference-al.test.ts

@@ -4,7 +4,6 @@ import os from 'node:os';
 import path from 'node:path';
 import {spawnSync} from 'node:child_process';
 import {getQuestion} from '../scripts/question-registry';
-import {E2E_TOUCHFILES} from './helpers/touchfiles-data';
 import {CARVE_GUARDS} from './helpers/carve-guards';
 const root=path.resolve(import.meta.dir,'..');
 const temp=fs.mkdtempSync(path.join(os.tmpdir(),'gstack-ceo-mode-preference-'));
@@ -126,9 +125,6 @@ test('only an explicit user selection or enabled successful mode check bypasses
   expect(document).toContain('Note: options differ in kind, not coverage — no completeness score.');
  }
 });
-test('the new render/runtime regression belongs to the existing auto-decide owner',()=>{
- expect(Object.entries(E2E_TOUCHFILES).filter(([,v])=>v.includes('test/ceo-mode-preference-al.test.ts')).map(([k])=>k)).toEqual(['auto-decide-preserved']);
-});
 test('rendered mode contract stays within the existing canonical skeleton cap',()=>{
  // --out-dir changes section-link roots only. Undo that output-location
  // substitution before measuring the same canonical bytes as parity-suite.