ADR 0108: PTO ISA 0.58.4.1 to 0.58.5 compatibility boundary

Context

Publication 0.58.4.1 is immutable. Since that publication, accepted architecture work changed Shared range and cooperative-group behavior, retired legacy Shared movement functions, and added private CUBE vector/CELL rearrangement operations while retiring their replaced operation identities. The current accepted NDF set and instruction-contract digests therefore cannot be published under the old architecture or publication identity.

Decision

The consolidated candidate advances to architecture version 0.58.5, first publication revision 0.58.5.0, and encoding ABI pto-isa-0.58.5-mode-function-v1. The release selection baseline is the exact published v0.58.4.1 commit 5114fb699fa510abd9a3c42bcfa5c592cd724961.

This decision assigns only the compatibility and release identity. Current decode, legality, operation, state-transition, no-effect, and fault behavior remain owned by the affected ASL/NDF sources and their focused AVS evidence. It does not restate or replace those normative contracts.

Compatibility

Published 0.58.4.1 artifacts, tags, evidence, and manifests remain immutable. Consumers that require the retired operation identities or legacy Shared movement functions must continue selecting 0.58.4.1; there are no binary aliases in 0.58.5. Consumers selecting the new operation set and Shared behavior select architecture 0.58.5 and publication 0.58.5.0.

Verification and release impact

The release requires regenerated content-addressed evidence, ABI vectors, release manifest, complete exact-commit ASL validation, static-site validation, an immutable v0.58.5.0 tag, and publication from the exact validated site artifact. A different-commit, stale, skipped, failed, or partial run is not release evidence.