# GovOPlaN Policy

`govoplan-policy` owns policy and retention API route contributions during the
GovOPlaN module split.

The current package delegates to the legacy access administration
implementation while route ownership is separated before model migration.

Policy decision and provenance payloads use the shared kernel DTOs documented
in [docs/POLICY_DECISION_PROVENANCE.md](docs/POLICY_DECISION_PROVENANCE.md)
and `/mnt/DATA/git/govoplan-core/docs/POLICY_CONTRACTS.md`.

Hierarchical policy evaluation, delegation ceilings, and write simulations are
implemented in `govoplan_policy.backend.hierarchy`. Privacy retention uses that
shared helper and exposes `/api/v1/admin/privacy-retention/policies/{scope}/simulate`
for preflight checks before saving lower-level policy changes.