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-barless-submit.test.ts

@@ -1,7 +1,6 @@
 import { describe, expect, test } from 'bun:test';
 import { hasNativePostAnswerCeoPosture, nextCeoPostureContinuation } from './helpers/ceo-mode-option';
 import type { PlanCountTranscript } from './helpers/plan-count-transcript';
-import { E2E_TOUCHFILES, selectTests } from './helpers/touchfiles';
 import captured from './fixtures/ceo-barless-submit-ac.json';
 
 const selectedAt = Date.parse(captured.provenance.modeRequestAt);
@@ -118,10 +117,4 @@ describe('bounded CEO barless packet submission', () => {
       text: 'HOLD SCOPE: keep the saved-view feature fixed and make its failure handling rigorous.' });
     expect(hasNativePostAnswerCeoPosture(p.t, 'HOLD SCOPE', /hold\s*scope/i, selectedAt)).toBe(true);
   });
-
-  test('the free test and fixture select only the mode-routing workflow', () => {
-    for (const file of ['test/ceo-barless-submit.test.ts', 'test/fixtures/ceo-barless-submit-ac.json']) {
-      expect(selectTests([file], E2E_TOUCHFILES, []).selected).toEqual(['plan-ceo-mode-routing']);
-    }
-  });
 });