ship/featai add in game decision diagnostics - #7090

Investigator 3 reviewed 5 fully hydrated PRs with complete patches and found no malicious or suspicious signals. All reviewed patches are legitimate game-engine and parser fixes for the phase-rs/phase MTG engine, with extensive tests and detailed rule citations. The contributor is a MEMBER of the target organization with activity concentrated on a single repository. However, 23 of 33 PRs in this shard were metadata-only or preview-mode with truncated patches, and 70 of 100 candidate PRs were omitted globally. No patch-level review is possible for the majority of the shard. There is no concrete evidence to downgrade the deterministic score, but the large coverage gap prevents a high-confidence safe verdict.