ring-pre-dev-dependency-map

name	ring:pre-dev-dependency-map
description	Gate 6: Technology choices document - explicit, versioned, validated technology selections with justifications. Large Track only. HARD BLOCK: Must load Ring Standards and PROJECT_RULES.md before proceeding.

Dependency Map — Explicit Technology Choices

When to use

• Data Model passed Gate 5 validation
• About to select specific technologies
• Large Track workflow (2+ day features)

Skip when

• Small Track workflow → skip to Task Breakdown
• Technologies already locked → skip to Task Breakdown
• Data Model not validated → complete Gate 5 first

Sequence

Runs before: ring:pre-dev-task-breakdown Runs after: ring:pre-dev-data-model

Every technology choice must be explicit, versioned, validated against Ring Standards, and justified. The Dependency Map answers WHAT specific products, versions, packages, and infrastructure will be used.

Step 0: Standards Loading (HARD GATE)

Step 0.1: Read Technology Decisions from TRD

Read docs/pre-dev/{feature}/trd.md — extract: deployment.model, tech_stack.primary, project_technologies[].

If TRD metadata missing → STOP: "Go back to TRD (Gate 3) and complete Step 0.4."

Step 0.2: Load Ring Standards via WebFetch

Standard	URL
golang/index.md	https://raw.githubusercontent.com/LerianStudio/ring/main/dev-team/docs/standards/golang/index.md
typescript.md	https://raw.githubusercontent.com/LerianStudio/ring/main/dev-team/docs/standards/typescript.md
frontend.md	https://raw.githubusercontent.com/LerianStudio/ring/main/dev-team/docs/standards/frontend.md
devops.md	https://raw.githubusercontent.com/LerianStudio/ring/main/dev-team/docs/standards/devops.md
sre.md	https://raw.githubusercontent.com/LerianStudio/ring/main/dev-team/docs/standards/sre.md

Step 0.3: Generate PROJECT_RULES.md (OUTPUT)

Using TRD project_technologies[], create docs/PROJECT_RULES.md with: deployment model, tech stack, per-category decisions (PRD requirement, technology, version, rationale, cloud service, on-premise alternative), version matrix, security/compliance notes.

Mandatory Workflow

Phase	Activities
1. Evaluation	Ring Standards loaded; map TRD components to tech candidates; validate against Ring Standards; map Data Model to storage; map API contracts to protocols; check team expertise; estimate costs
2. Selection	Per technology: check Ring Standards (mandatory/prohibited), specify exact version, list alternatives with trade-offs, verify compatibility, check security (CVEs), validate licenses, calculate costs
3. Gate 6 Validation	All dependencies explicit; no conflicts; no critical CVEs; licenses compliant; costs documented; all components mapped

Version Rules

1. Explicit: @v1.27.0 not @latest or ^1.0.0
2. Justified ranges: If using >=, document why
3. Lock file referenced: go.mod, package-lock.json, etc.
4. Upgrade constraints: Document why locked/capped
5. Compatibility: Document known conflicts

Include in Dependency Map

• Exact package names with versions (go.uber.org/zap@v1.27.0)
• Tech stack with constraints (Go 1.24+, PostgreSQL 16)
• Infrastructure specs (Valkey 8, MinIO)
• External SDKs, dev tools, security deps, monitoring tools
• Compatibility matrices
• License summary
• Cost analysis

Never Include

• Implementation code or how to use dependencies
• Task breakdowns or setup instructions
• Architectural patterns (→ TRD)
• Business requirements (→ PRD)

Output Format

File: docs/PROJECT_RULES.md File: docs/pre-dev/{feature}/dependencies.md

# Dependency Map: {Feature Name}

## Technology Decisions

| Category | PRD Requirement | Choice | Version | Rationale | Alternatives Considered |
|----------|----------------|--------|---------|-----------|------------------------|
| Relational DB | Persistent user data | PostgreSQL | 16.2 | Ring standard; team expertise; ACID | MySQL (less preferred), SQLite (no concurrent writes) |
| Cache | Session storage | Valkey | 8.0 | Ring standard; Redis-compatible | Redis (licensing change) |
| Message Queue | Async processing | RabbitMQ | 3.13 | Ring standard; existing infra | Kafka (overkill for volume) |

## Version Matrix

| Package | Version | Lock File | Upgrade Constraint |
|---------|---------|-----------|-------------------|
| go.uber.org/zap | v1.27.0 | go.sum | Stable API; no breaking changes in minor |

## Security & Licenses

| Package | License | CVE Status | Risk |
|---------|---------|-----------|------|
| github.com/jackc/pgx/v5 | MIT | None | Low |

## Cost Analysis

| Component | Shared/Dedicated | Monthly Cost | Notes |
|-----------|-----------------|-------------|-------|
| PostgreSQL (RDS) | Dedicated | R$ 1,490 | 2 vCPU, 8GB RAM |

Gate 6 Validation Checklist

Category	Requirements
Completeness	All TRD components have specific technology choices; all dependencies explicit
Versioning	Exact versions specified; no @latest; lock files referenced
Standards Compliance	Choices validated against Ring Standards; prohibited packages avoided
Security	No critical CVEs; licenses compliant; security deps included
Costs	Cost per component documented; shared vs dedicated decisions made

Gate Result: ✅ PASS → Task Breakdown | ⚠️ CONDITIONAL (version gaps or cost estimates missing) | ❌ FAIL (unresolved conflicts or CVEs)