test(fixtures): register the pregate-timing fixtures as free-only (W4)

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

test/helpers/free-fixtures-data.ts

@@ -173,6 +173,7 @@ export const FREE_FIXTURES: Readonly<Record<string, readonly string[]>> = {
   'test/fixtures/ship-queue/gbrain-stamp-pair.json': ['test/helpers/ship-queue-fixture.ts', 'test/tree-receipt-gbrain-pair.test.ts'],
   'test/fixtures/ship-triage/**': ['test/ship-triage-labels.test.ts'],
   'test/fixtures/state-matrix-6792/**': ['test/state-matrix.test.ts'],
+  'test/fixtures/pregate-timing/**': ['test/pregate-timing.test.ts'],
   'test/fixtures/skillify-narration/**': ['test/skill-fixture.test.ts'],
   'test/fixtures/test-value-seam-evidence.json': ['test/test-value-bar.test.ts'],
   'test/fixtures/third-party-actions-recovery-public.json': ['test/third-party-actions-recording.test.ts', 'test/third-party-actions.test.ts'],