Dependency Map - Explicit Technology Choices

Foundational Principle

Every technology choice must be explicit, versioned, validated against Ring Standards, and justified.

Using vague or "latest" dependencies creates:

• Unreproducible builds across environments
• Hidden incompatibilities discovered during implementation
• Security vulnerabilities from unvetted versions

The Dependency Map answers: WHAT specific products, versions, packages, and infrastructure we'll use. The Dependency Map never answers: HOW to implement features (that's Tasks/Subtasks).

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⛔ HARD BLOCK: Standards Loading (Step 0)

This is a HARD GATE. Do NOT proceed without loading Ring Standards and TRD decisions.

Step 0.1: Read Technology Decisions from TRD

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

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

Step 0.2: Load Ring Standards via WebFetch

Standard	URL	Purpose
golang.md	https://raw.githubusercontent.com/LerianStudio/ring/main/dev-team/docs/standards/golang.md	Go coding patterns
typescript.md	https://raw.githubusercontent.com/LerianStudio/ring/main/dev-team/docs/standards/typescript.md	TypeScript patterns
frontend.md	https://raw.githubusercontent.com/LerianStudio/ring/main/dev-team/docs/standards/frontend.md	Frontend patterns
devops.md	https://raw.githubusercontent.com/LerianStudio/ring/main/dev-team/docs/standards/devops.md	DevOps patterns
sre.md	https://raw.githubusercontent.com/LerianStudio/ring/main/dev-team/docs/standards/sre.md	Observability, logging

Ring Standards = coding patterns, observability, logging, error handling (shared across ALL projects) PROJECT_RULES.md = specific technologies, versions, database choices (specific to THIS project)

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.

Pressure Resistance for Step 0

Pressure	Response
"TRD doesn't have technology decisions"	"Go back to TRD (Gate 3) and complete Step 0.4 (PRD analysis)."
"Ring Standards are optional"	"Ring Standards define coding patterns. PROJECT_RULES.md defines technologies. Both needed."
"Just use defaults"	"Defaults come from PRD analysis in TRD. Read TRD first."
"Skip to save time"	"PROJECT_RULES.md is the output. Cannot skip the output."

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Mandatory Workflow

Phase	Activities
1. Evaluation	Ring Standards loaded (Step 0); PROJECT_RULES.md loaded; Data Model (Gate 5), API Design (Gate 4), TRD (Gate 3) passed; 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), check PROJECT_RULES.md overrides, 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, team expertise, costs documented, all components mapped

Explicit Rules

✅ DO Include

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, how to use dependencies, task breakdowns, setup instructions, architectural patterns (TRD), business requirements (PRD)

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

Rationalization Table

Excuse	Reality
"Latest version is always best"	Latest is untested in your context. Pick specific, validate.
"I'll use flexible version ranges"	Ranges cause non-reproducible builds. Lock versions.
"Version numbers don't matter much"	They matter critically. Specify or face build failures.
"We can update versions later"	Document constraints now. Future you needs context.
"The team knows the stack already"	Document it anyway. Teams change, memories fade.
"Security scanning can happen in CI"	Security analysis must happen before committing. Do it now.
"We'll figure out costs in production"	Costs must be estimated before building. Calculate now.
"Compatibility issues will surface in tests"	Validate compatibility NOW. Don't wait for failures.
"License compliance is legal's problem"	You're responsible for your dependencies. Check licenses.
"I'll just use what the project template has"	Templates may be outdated/insecure. Validate explicitly.

Red Flags - STOP

If you catch yourself writing any of these in a Dependency Map, STOP:

• Version placeholders: @latest, @next, ^X.Y.Z without justification
• Vague descriptions: "latest stable", "current version", "newest"
• Missing version numbers: Just package names without versions
• Unchecked compatibility: Not verifying version conflicts
• Unvetted security: Not checking vulnerability databases
• Unknown licenses: Not documenting license types
• Estimated costs as "TBD" or "unknown"
• "We'll use whatever is default" (no default without analysis)

When you catch yourself: Stop and specify the exact version after proper analysis.

Gate 6 Validation Checklist

Category	Requirements
Standards Compliance (HARD BLOCK)	Ring Standards loaded; PROJECT_RULES.md loaded; mandatory deps included (or justified); no prohibited choices (or justified); version constraints respected; deviations documented
Compatibility	All deps have explicit versions; version matrix complete; no known conflicts; runtime requirements specified; upgrade path documented
Security	All deps scanned for vulnerabilities; no critical (9.0+) or high (7.0-8.9) CVEs; security update policy documented; supply chain verified
Feasibility	Team has expertise or learning path; tools available; licensing allows commercial use; costs fit budget
Completeness	Every TRD component mapped; dev environment specified; CI/CD deps documented; monitoring stack complete
Documentation	License summary; cost analysis; known constraints; alternatives with rationale

Gate Result: ✅ PASS (all checked) → Task Breakdown | ⚠️ CONDITIONAL (standards not loaded) → Complete Step 0 | ❌ FAIL (critical CVEs, incompatibilities, standards not loaded)

Common Violations

Violation	Wrong	Correct
Vague Versions	Fiber (latest), PostgreSQL (current), Zap (newest stable)	gofiber/fiber/v2@v2.52.0 with purpose, alternatives considered, trade-offs; lib/pq@v1.10.9 with constraint; go.uber.org/zap@v1.27.0 with rationale
Missing Security	JWT Library: golang-jwt/jwt@v5.0.0 (no analysis)	Package + purpose + security (CVE check date, OWASP compliance, update history) + alternatives
Undefined Infrastructure	Some database (probably Postgres), Cache (Redis or Valkey), Storage for files	Per component: product + version + rationale + configuration + cost (managed vs self-hosted)

Dependency Resolution Patterns

Standards-Driven Validation

If language cannot be auto-detected, use AskUserQuestion with tech stack options (Go Backend, TypeScript Backend, TypeScript Frontend, Full-Stack TypeScript).

Selection	Standards to Load
Go Backend	golang.md + devops.md + sre.md
TypeScript Backend	typescript.md + devops.md + sre.md
TypeScript Frontend	frontend.md + devops.md
Full-Stack TypeScript	typescript.md + frontend.md + devops.md + sre.md

Validation Flow: Standards loaded → Extract mandatory/prohibited/constraints → Check PROJECT_RULES.md → Validate each selection → Document compliance or justified deviations

Best Practices

Prefer: Semantic versioned packages, well-maintained (commits within 6 months), minimal dependency trees, standard library when sufficient Avoid: Deprecated packages (>1 year unmaintained), single-maintainer critical deps, >100 transitive deps, GPL unless compliance certain

Authentication Dependencies (Mandatory for Auth Features)

If TRD specifies authentication/authorization requirements, include these dependencies:

Tech Stack	Auth Requirement	Mandatory Dependency	Reference
Go Backend	User authentication	github.com/LerianStudio/lib-auth/v2	golang.md → Access Manager Integration
Go Backend	Service-to-service auth	github.com/LerianStudio/lib-auth/v2	golang.md → Access Manager Integration
Go Backend	User + permissions (RBAC)	github.com/LerianStudio/lib-auth/v2	golang.md → Access Manager Integration

For Go services, the dependency entry MUST include:

### Authentication

**Package:** `github.com/LerianStudio/lib-auth/v2@vX.Y.Z`
**Purpose:** Integration with Lerian Access Manager (plugin-auth + identity)
**Rationale:** Standard authentication library for all Lerian Go services
**Environment Variables:** PLUGIN_AUTH_ADDRESS, PLUGIN_AUTH_ENABLED
**Additional (if S2S):** CLIENT_ID, CLIENT_SECRET
**Reference:** See `golang.md` → Access Manager Integration for implementation patterns

CRITICAL: Go services MUST use lib-auth for authentication. Direct integration with plugin-auth is FORBIDDEN.

Implementation Requirement (from TRD):

• Every protected endpoint MUST have route middleware: auth.Authorize(applicationName, resource, action)
• Middleware is applied per-route, not globally
• See golang.md → Access Manager Integration → Router Setup for patterns

Licensing Dependencies (Mandatory for Licensed Products)

If TRD specifies this is a licensed product/plugin, include these dependencies:

Tech Stack	License Requirement	Mandatory Dependency	Reference
Go Backend	Single-org (global) license	github.com/LerianStudio/lib-license-go/v2	golang.md → License Manager Integration
Go Backend	Multi-org license	github.com/LerianStudio/lib-license-go/v2	golang.md → License Manager Integration

For Go services, the dependency entry MUST include:

### Licensing

**Package:** `github.com/LerianStudio/lib-license-go/v2/middleware@vX.Y.Z`
**Purpose:** Integration with Lerian License Manager for product licensing
**Rationale:** Standard licensing library for all Lerian licensed Go services
**Environment Variables:** LICENSE_KEY, ORGANIZATION_IDS
**Mode:** Global (ORGANIZATION_IDS=global) or Multi-org (comma-separated org IDs)
**Reference:** See `golang.md` → License Manager Integration for implementation patterns

CRITICAL: Go services MUST use lib-license-go for licensing. Custom license validation is FORBIDDEN.

Implementation Requirement (from TRD):

• License middleware applied GLOBALLY: f.Use(lc.Middleware())
• Middleware applied early in chain (first after Fiber creation)
• Graceful shutdown MUST include: licenseClient.GetLicenseManagerShutdown()
• See golang.md → License Manager Integration → Router Setup for patterns

License & Cost Templates

License Summary: Document count by type (MIT, Apache 2.0, BSD-3-Clause, Commercial), compliance actions (attribution file, legal notification, GPL verification)

Cost Analysis: Monthly breakdown by category (Compute: containers × cost, Storage: managed DB + cache + object, Network: transfer + load balancer, Third-Party: auth + email + monitoring), grand total, scaling cost per additional users, budget validation

Confidence Scoring

Factor	Points	Criteria
Technology Familiarity	0-30	Used before: 30, Similar: 20, Novel: 10
Compatibility Verification	0-25	All verified: 25, Most checked: 15, Limited: 5
Security Assessment	0-25	Full CVE scan: 25, Basic check: 15, No review: 5
Cost Analysis	0-20	Detailed breakdown: 20, Rough estimates: 12, None: 5

Action: 80+ autonomous generation | 50-79 present alternatives | <50 ask about expertise/constraints

Output & After Approval

Output to: docs/pre-dev/{feature-name}/dependency-map.md

1. ✅ Lock all versions - update only with documented justification
2. 🎯 Create lock files (go.mod, package-lock.json, etc.)
3. 🔒 Set up Dependabot or equivalent for security updates
4. 📋 Proceed to task breakdown with full stack context

The Bottom Line

If you skipped loading Ring Standards, STOP and go back to Step 0.

If you wrote a Dependency Map without explicit versions, add them now or start over.

Two non-negotiable requirements:

1. Ring Standards MUST be loaded - Technology choices validated against organizational baseline
2. Every dependency MUST be explicit - No @latest, no vague versions, no "we'll figure it out"

Load standards first. Be explicit. Be specific. Lock your versions.