Initial public ModelForge release

2026-09-01 21:30:16 +02:00
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+# ADR-0034: Retention and dependency-aware cleanup
+
+## Status
+
+Accepted in M12 on 2026-08-26.
+
+## Context
+
+Unused-looking model bytes may still back a deployment, rollback, evaluation, project, migration or
+another node. Immediate deletion after promotion destroys recoverability and provenance.
+
+## Decision
+
+RetentionPolicy is revisioned; prior stable targets receive a minimum rollback window. Deprecation,
+archive and physical removal are separate. Cleanup always begins with a dependency-digest dry-run,
+requires explicit operator execution and rechecks dependencies transactionally. Location removal is
+node-specific and records prior facts; metadata/provenance remain.
+
+## Consequences
+
+Storage recovery may be delayed by valid dependencies or retention. Cleanup races return stale/409
+instead of deleting. Multiple node copies are reconciled independently and audit remains queryable.
+
+## Rejected alternatives
+
+- Age-only automatic cleanup: cannot see active or rollback dependencies.
+- Cascading deletes: erases evidence and makes blast radius implicit.
+- Treating one removed location as global deletion: is incorrect in a multi-node registry.