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/autoplan-pending-question.test.ts

@@ -5,7 +5,6 @@ import * as path from 'node:path';
 import { spawnSync } from 'node:child_process';
 import { createPendingQuestionRecorder, readPendingQuestion, recordPendingQuestion } from './helpers/plan-count-pending-question';
 import { readPlanCountTranscript } from './helpers/plan-count-transcript';
-import { E2E_TOUCHFILES, selectTests } from './helpers/touchfiles';
 import captured from './fixtures/autoplan-routing-manual-skills-ac.json';
 
 // Exact retained public question; hook envelopes and owned temp paths are
@@ -208,13 +207,6 @@ describe('opt-in pending native AskUserQuestion capture', () => {
       }
     } finally { f.dispose(); }
   });
-
-  test('the helper and new free test select only the two opted-in workflows', () => {
-    for (const file of ['test/helpers/plan-count-pending-question.ts', 'test/autoplan-pending-question.test.ts']) {
-      expect(selectTests([file], E2E_TOUCHFILES, []).selected.sort()).toEqual(['plan-ceo-mode-routing']);
-    }
-  });
-
   test('a hook whose input never ends closes within its own bound and remains silent', async () => {
     const f = fixture();
     const hook = f.recorder.hooks.PreToolUse[0]!.hooks[0]!;