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/ship-coverage-audit-af.test.ts

@@ -3,7 +3,6 @@ import fs from 'node:fs';
 import path from 'node:path';
 import * as evidence from './helpers/coverage-audit-evidence';
 import { JUDGE_MS, CAPTURE_MS } from './helpers/eval-budgets';
-import { E2E_TOUCHFILES } from './helpers/touchfiles-data';
 import fixture from './fixtures/ship-coverage-audit-af.json';
 import { randomUUID } from 'node:crypto';
 import { validateCoverageAudit } from './helpers/coverage-audit';
@@ -93,10 +92,6 @@ test('AF ship actual read helper accepts only literal owned delivery before read
   for(const row of fixture.rows.slice(0,2))expect((evidence as any).coverageAuditReadEvidence(row.result.transcript,{cwd:row.cwd,source:{path:row.cwd+'/src/billing.ts',content:fixture.files.source},tests:{path:row.cwd+'/test/billing.test.ts',content:fixture.files.tests}})).toEqual({sourceRead:true,testsRead:true});
 });
 
-test('AF ship controls and fixture select the one existing owner',()=>{
-  for(const name of ['test/ship-coverage-audit-af.test.ts','test/fixtures/ship-coverage-audit-af.json'])expect(Object.entries(E2E_TOUCHFILES).filter(([,files])=>files.includes(name)).map(([owner])=>owner)).toEqual(['ship-coverage-audit']);
-});
-
 function commandReads(command:string) {
   const row=fixture.rows[0]!;const session=row.sessionId;
   const transcript=[{type:'system',subtype:'init',session_id:session,cwd:row.cwd},