audit: 2026-05-30 full-codebase audit — report, issues, docs, runbooks

Full-codebase-audit 2026-05-30 outputs:
- Audit report: 09 - Audits/Full Codebase Audit - 2026-05-30.md
- 81 issue files ISSUE-055..135 (decisions + 1 skipped no-brainer).
- Scanner docs from scratch (was zero): architecture, data model, API ref, payment
  flow, operations runbook + repo README.
- Doc-sync updates across API reference, data models, flows, design system.
- Secret Rotation Runbook (08 - Operations) for the exposed credentials.
- Reusable workflow guide (07 - Development) + .claude/workflows/full-codebase-audit.js.

Issues remain status:open intentionally — the code fixes are uncommitted-then-committed
working-tree changes per repo and aren't "resolved" until merged/deployed.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Issues/ISSUE-049-frontend-getconfirmationthresholdhistory-calls-get-api-admin.md

@@ -4,8 +4,10 @@ title: "Frontend getConfirmationThresholdHistory calls GET /api/admin/settings/c
 severity: major
 domain: Admin
 labels: [missing-feature, backend, major, admin]
-status: open
+status: resolved
 created: 2026-05-29
+resolved: 2026-05-30
+fix: "GET /api/admin/settings/confirmation-thresholds/history implemented in commit 27fb15a (task #9) using ConfigSettingHistory model"
 source: Doc vs Code Audit 2026-05-29
 ---