[antono3]

Centralize the existing tested compiler/bootstrap and dependency profiles in compatibility.json, and resolve them before CI checkout. Reject disagreement with VPM declarations while preserving advisory upstream-master lanes.

Add read-only compiler/tool/module diagnostics with recovery actions, explicit compiler-profile selection, optional Vulkan device enumeration and JSON support reports. Document upgrade validation.

Validate setup declarations on Windows/Linux and add a real NV12-capture evidence collector with source/media hashes, GPU/driver details and FFmpeg comparison. Missing captures and failed comparisons cannot claim hardware decode validation. Actual Windows GPU decoding remains unverified on the audit hardware.

Validation: local compatibility and diagnostic regressions, applicable Windows recovery/setup fixtures, workflow actionlint and whitespace checks passed. Full latest-head CI and agent code review are required before merge. Compiler and module versions are unchanged.

[antono3]

Agent code review of 81ccbc2.

Reviewed manifest/declaration agreement, immutable compiler/bootstrap pins, workflow checkout paths and profile selection, installed-tag verification, bounded read-only diagnostics and failure-oriented regression fixtures. Existing compiler/dependency versions and advisory lanes are preserved. No blocking findings. Reviewed hardware evidence scopes: enumeration cannot claim decode validation, and failed/missing GPU captures produce a failing report. Actual Windows hardware decoding remains unverified on the audit GPU.

All 8 applicable PR checks and complete latest-head workflows passed. This is agent review, not independent human approval.