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/office-hours-phase4-caller.test.ts

@@ -2,8 +2,6 @@ import { expect, test } from 'bun:test';
 import * as fs from 'node:fs';
 import * as path from 'node:path';
 import { CAPTURE_MS, CAPTURE_LONG_MS } from './helpers/eval-budgets';
-import { E2E_TOUCHFILES } from './helpers/touchfiles';
-
 const source = fs.readFileSync(path.join(import.meta.dir, 'skill-e2e-office-hours-phase4.test.ts'), 'utf8');
 const question = (word = 'architectural', options = 'A) Put retrieval on the server\nB) Put retrieval on the client') =>
   `Where should retrieval live?\nThis ${word} choice decides which component owns the retrieval algorithm and the cross-host API contract.\n${options}\nRecommendation: A because all hosts need a consistent algorithm with one owner.\n`;
@@ -98,7 +96,3 @@ test('Phase4 caller fixture retains fork validation under either path convention
     expect(rejected.thrown).toBeDefined(); expect(rejected.judged).toBe(0); expect(rejected.rows[0].passed).toBe(false);
   }
 });
-
-test('Phase4 caller controls select only the existing Phase4 paid owner', () => {
-  expect(Object.entries(E2E_TOUCHFILES).filter(([,paths])=>paths.includes('test/office-hours-phase4-caller.test.ts')).map(([name])=>name)).toEqual(['office-hours-phase4-fork']);
-});