The executable contract for the shipped defaults (internal/zddc/defaults.zddc.yaml):
~38 cells asserting who-can-do-what across the canonical project folders, routed
through the real decider (InternalDecider: cascade + WORM mask + active-admin
bypass) evaluated at the target's logical parent — the same decision the server
makes. Locks the document-control model so a change to the defaults OR the
engine that resolves them can't silently shift access. Storage-agnostic: if the
defaults later move into a project-root .zddc.zip of per-depth .zddc files, the
test is unchanged (it asserts effective policy, not where the bytes live).
Covers: no-create-at-project-root; DC/team/observer per-peer grants (working/
staging/reviewing/incoming/ssr); team rwc on mdl/rsk; archive WORM (DC
create-once, no write/delete; others read); elevated-admin bypass vs un-elevated
no-bypass; anonymous denied. Complements Layer 1 (engine-follows-policy):
policy.TestInternalDecider_CascadeScenarios + zddc/{acl,roles,worm}_test +
policy/parity_test.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
