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chore(audit): ralph deep codebase remediation (20260301-015409) #56

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5acb17d
fix(deps): remediate audit gate advisories
ndycode Feb 28, 2026
4d126c6
docs(audit): record deep audit evidence for 20260301-015409
ndycode Feb 28, 2026
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63 changes: 63 additions & 0 deletions docs/development/audits/deep-audit-20260301-015409.md
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# Deep Audit Report (20260301-015409)

## Scope
- Repository-wide deep audit from isolated worktree `audit/ralph-deep-audit-20260301-015409` (based on `origin/main`).
- Focus domains:
- Dependency security gates
- OAuth/auth flow safety
- Request/response transformation and retry handling
- Storage/path/backup behavior
- Rotation/circuit-breaker/health reliability

## Baseline
- `npm run typecheck`: pass
- `npm run lint`: pass
- `npm test`: pass (`56 files`, `1776 tests`)
- `npm run build`: pass
- `npm run audit:ci`: fail (high advisory in `hono 4.12.0 - 4.12.1`)

## Findings
### A-001 (High) - Production dependency advisory
- Area: dependency security
- Evidence: `npm run audit:prod` reported `GHSA-xh87-mx6m-69f3` against `hono 4.12.0 - 4.12.1`
- Remediation:
- Updated `dependencies.hono` from `^4.12.0` to `^4.12.3`
- Updated `overrides.hono` from `^4.12.0` to `^4.12.3`
- Added `overrides.rollup` at `^4.59.0` to satisfy `audit:dev:allowlist` high-severity gate
- Regenerated `package-lock.json`
- Risk: low behavioral risk (patch/minimal dependency remediation only)
- Validation:
- `npm run audit:prod`: pass (`0 vulnerabilities`)
- `npm run audit:ci`: pass (only allowlisted advisories remain)

## Deep Code Review Results
No additional exploitable issues were confirmed in the source audit sweep of:
- `lib/auth/auth.ts`
- `lib/auth/server.ts`
- `lib/auth/browser.ts`
- `lib/request/request-transformer.ts`
- `lib/request/fetch-helpers.ts`
- `lib/request/response-handler.ts`
- `lib/storage.ts`
- `lib/storage/paths.ts`
- `lib/rotation.ts`
- `lib/circuit-breaker.ts`
- `lib/health.ts`

Review checks included:
- local callback/state validation flow
- process-spawn usage patterns and shell invocation controls
- retry-after parsing and backoff paths
- stateless request transformation/tool-call normalization
- storage path hygiene and backup handling

## Post-Remediation Verification
- `npm run typecheck`: pass
- `npm run lint`: pass
- `npm test`: pass (`56 files`, `1776 tests`)
- `npm run build`: pass
- `npm run audit:ci`: pass

## Notes
- This report intentionally excludes generated output (`dist/`) from audit mutation scope.
- No public API/interface changes were introduced.
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