The #2077 demotion of these four stochastic tests to 'periodic' was inert:
E2E_TIERS declared periodic but the files self-gated on EVALS_TIER === 'gate',
so they kept running in the blocking gate lane and never in the weekly lane.
Flip the four self-gates to 'periodic' (headers/describe labels updated), add
a free static tier-alignment invariant test (dep-list filename mapping;
unmapped self-gated files are reported, never silently skipped), and name the
two plan-mode test files in their own touchfiles dep lists so the invariant
binds for them.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Garry Tan