# Phase 3.1 — Master Task Backlog Change Log

- **Audit Phase**: Phase 3.1 — Human Review Preparation and Master Backlog Critique
- **Repository HEAD**: `715873b2ecc3a72ba974bb2a2be87c5ba82bd4e7`

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## Task Modifications Log

### 1. `TASK-AUTH-001`
- **Old Task Specification**: "storing JWT access token in localStorage / memory".
- **Change**: Updated storage architecture recommendation to strictly warn against `localStorage` due to XSS vulnerabilities. Recommended storing JWT access token in-memory in Zustand state / Axios request header interceptor, with architectural guidance for HttpOnly cookies in production.
- **Reason**: Storing JWT in `localStorage` allows any client-side XSS script to exfiltrate access tokens.
- **Evidence**: `src/services/authService.ts` line 59, `src/services/api.ts` line 14.
- **Impact**: Hardens storefront authentication state against token theft vulnerabilities.

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### 2. `TASK-FIN-001`
- **Old Task Specification**: "Validate product existence, inventory availability, and stock deduction inside Prisma transaction."
- **Change**: Removed inventory availability and stock deduction requirements from core task scope.
- **Reason**: `Product` model in `backend/prisma/schema.prisma` does not have a `stock` or `inventory` column. Adding inventory checking was unsupported scope creep.
- **Evidence**: `backend/prisma/schema.prisma` lines 64-90 (`Product` model schema).
- **Impact**: Keeps `TASK-FIN-001` tightly focused on monetary Decimal precision (`BE-001`) and N+1 query batching (`BE-002`).

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### 3. `DECISION-002`
- **Old Classification**: Listed as an active blocked item under `MASTER-TASK-BACKLOG.md`.
- **Change**: Reclassified from active backlog blocker to `FUTURE_SCOPE` and removed from canonical remediation task dependencies.
- **Reason**: No verified finding or active implementation task requires live payment gateway provider integration.
- **Evidence**: `docs/audit/20-verified-findings-index.json` (0 findings related to payment gateways).
- **Impact**: Prevents unevidenced product requirements from blocking core audit remediation.

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### 4. `TASK-VERIFY-001`
- **Old Task Specification**: "100% of tests pass".
- **Change**: Replaced generic text with explicit, behavior-oriented verification assertions across Authentication, Security, Financial, Quality, and Frontend domains.
- **Reason**: Generic acceptance criteria fail to specify actual runtime behavior to test.
- **Evidence**: `docs/audit/phase3.1-backlog-review.md` Section 11.
- **Impact**: Provides concrete, unambiguous test cases for post-remediation verification.

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### 5. `TASK-SEC-001` & `TASK-SEC-002`
- **Old Task Specification**: General secret and CSPRNG assertions.
- **Change**: Added explicit minimum length checks (>= 32 chars) and immediate `process.exit(1)` startup failure requirements for `TASK-SEC-001`, and rate-limiting / expiration boundaries for `TASK-SEC-002`.
- **Reason**: Hardening defense-in-depth security defaults.
- **Evidence**: `backend/src/auth/jwt.strategy.ts` line 12, `backend/src/auth/auth.service.ts` line 19.
- **Impact**: Ensures fail-closed security behavior in production environments.

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### 6. `TASK-BUILD-001` & Execution Waves
- **Old Execution Plan**: `TASK-BUILD-001` placed in Wave 1 after Wave 0.
- **Change**: Formally highlighted `TASK-BUILD-001` as the immediate prerequisite for `TASK-DEVOPS-001` (CI Pipeline).
- **Reason**: CI pipeline execution (`npx tsc --noEmit` and `npm run test`) will fail until compiler diagnostic errors and spec assertions are remediated.
- **Evidence**: `backend/prisma/seed.ts`, `backend/src/common/metrics.controller.ts`, spec files.
- **Impact**: Establishes correct dependency order for DevOps pipeline enablement.