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-133-scanner-ci-buildx-steps-run-privileged-true.md

@@ -0,0 +1,39 @@
+---
+issue: 133
+title: "Scanner: CI buildx steps run privileged: true — evaluate rootless alternative"
+severity: low
+domain: CI/CD
+labels: [security, scanner, ci-cd]
+status: open
+created: 2026-05-30
+source: Full Codebase Audit 2026-05-30
+---
+
+# Scanner: CI buildx steps run privileged: true — evaluate rootless alternative
+
+**Severity:** low
+**Domain:** CI/CD
+**Labels:** security, scanner, ci-cd
+
+## Description
+
+`scanner/.woodpecker/development.yml:23` runs buildx with `privileged: true` for Docker-in-Docker image builds. A privileged CI runner has full access to the host kernel. If a pipeline step is compromised, it can escape the container.
+
+## Options
+
+1. Switch to rootless/buildkit without privileged where the runner supports it.
+2. Keep privileged but pin the plugin to a digest and restrict secret exposure.
+3. Run builds on an isolated runner.
+
+## Recommendation
+
+Evaluate a rootless buildkit setup; if infeasible, at minimum pin the plugin digest (applied via NB-41) and isolate the runner.
+
+## Affected Files
+
+- `scanner/.woodpecker/development.yml:23`
+- `scanner/.woodpecker/production.yml`
+
+## References
+
+- [Full Codebase Audit 2026-05-30](../09%20-%20Audits/Full%20Codebase%20Audit%20-%202026-05-30.md) — DEC-73