Two review findings.
1. Per-app opt-out changes the group-template guarantee from "runs on every
descendant" to "runs unless the descendant declines" — a footgun for
compliance hooks (an audit/security trigger a tenant can silently opt out
of). There is no non-suppressible flag. Document this in design §4.5 +
CLAUDE.md, and record the deferred mitigation: a `sealed`/`mandatory`
group-template marker the trigger anti-join + route filter skip (cheap —
both filters are centralized).
2. The dangling-suppress warning path had no coverage. The suppress journey
now applies a `[suppress] triggers=["does-not-exist"]`, asserts the apply
still succeeds and the report warns "no effect".
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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