Submission audit snapshot: capture submitter trust/role standing at outcome decision time

[damienriehl]

Audit/compliance recordkeeping for the suggestion workflow (intent #3 of the consolidation-recovered intents; plan: docs/plans/2026-08-09-003-feat-submission-audit-snapshot-plan.md on the feature branch).

Every terminal suggestion outcome (accepted — human or auto-accept sweep — rejected, dismissed) records what the submitter was at that moment: trust tier, project role, display attribution, plus a capture-time discriminator. Owner/admin audit endpoint with keyset pagination. Forward-only; append-only; PII erasure exception documented (R9).

Implementation PR: alea-institute/ontokit-api (feat/audit-snapshot → feat/translations).

[damienriehl]

Implementation merged: alea-institute#13 (peer-reviewed 2026-08-10 — 7 local reviewers + independent Codex adversarial pass; KTD1 linearization explicitly confirmed) merged into the feat/translations stack. Reaches dev via the pending translations PR (alea-institute#12) review. Review residuals: #208.