# Gateway Security Hardening Scratchpad

## Metadata

- Date: 2026-03-13
- Worktree: `/home/jwoltje/src/mosaic-mono-v1-worktrees/sec-remediation`
- Branch: `fix/gateway-security`
- Scope: Finish 7 requested gateway security fixes without switching branches or worktrees
- Related tracker: worker task only; `docs/TASKS.md` is orchestrator-owned and left unchanged
- Budget assumption: no explicit token cap; keep scope limited to requested gateway/auth/validation hardening

## Objective

Complete the remaining gateway security hardening work:

1. Chat HTTP auth guard enforcement
2. Chat WebSocket session validation
3. Ownership checks on by-id CRUD routes
4. Global validation pipe and DTO enforcement
5. Rate limiting
6. Helmet security headers
7. Body limit and env validation

## Plan

1. Reconcile current worktree state against requested fixes.
2. Patch or extend tests first for DTO/auth behavior mismatches.
3. Implement minimal code changes to satisfy tests and requested behavior.
4. Run targeted gateway tests.
5. Run baseline gates: `pnpm typecheck`, `pnpm lint`.
6. Perform manual code review and record findings.
7. Commit, push branch, open PR, send OpenClaw event, remove worktree.

## Progress Log

### 2026-03-13T00:00 local

- Loaded required Mosaic/global/runtime instructions and applicable skills.
- Confirmed active worktree is `sec-remediation` and branch is already dirty with prior session changes.
- Identified remaining gaps: DTO validation mismatch and non-requested socket auth helper typing/behavior drift.

## TDD Notes

- Required: yes. This is security/auth/permission logic.
- Approach: update targeted unit tests first, verify failure, then patch code minimally.

## Verification Log

- Pending.

## Risks / Blockers

- Repository instructions conflict on PR merge behavior; user explicitly instructed PR-only, no merge. Follow user instruction.
- Existing worktree contains prior-session modifications; do not revert unrelated changes.