julian
17c08e6392
- Nx 22.7 monorepo (pnpm 11.1, TypeScript 5.9, Node 24) - apps/api: NestJS 11 (CJS conforme CODING-RULES.md PGD-DB-004) - apps/web: React 19 + Vite 8 (ESM) - libs/shared/api-interface: Zod contract base - Docker Compose dev: Postgres 18, Valkey 8, MinIO, Mailpit - WDS artifacts: - design-artifacts/A-Product-Brief/ (5 docs canônicos + 16 dialogs) - design-artifacts/B-Trigger-Map/ (hub + 4 personas + feature impact) - Stack canon: STACK.md v2.2 + CODING-RULES.md v2.0 + brand.md - AGENTS.md + README.md como entrada para devs/agentes Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
65 lines
2.4 KiB
Markdown
65 lines
2.4 KiB
Markdown
---
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name: evolution
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description: Add features to existing products through targeted changes
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---
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# [E] Evolution — Add Features to Existing Product
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**Goal:** Incrementally add features to an existing product with minimal disruption.
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**When to use:** Existing product needs new functionality. Changes should be targeted, not a complete rewrite.
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---
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## CORE PRINCIPLES
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- **Backward compatible** — Existing functionality must keep working. Every change is verified against what already exists.
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- **Feature flags if needed** — When a change is risky or requires staged rollout, use feature flags to decouple deployment from activation.
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- **Incremental delivery** — Ship in small, verifiable increments. Each commit should leave the system in a working state.
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---
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## INITIALIZATION
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### Design Log
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Read `{output_folder}/_progress/00-design-log.md`. Check Current and Backlog for context.
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### Essential Guides
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- **[Execution Principles](data/guides/EXECUTION-PRINCIPLES.md)** — Document-first, plan-then-execute
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- **[Session Protocol](data/guides/SESSION-PROTOCOL.md)** — Read dialog, verify plan, present status
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- **[Inline Testing Guide](data/guides/INLINE-TESTING-GUIDE.md)** — Baseline capture before modifying existing features
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---
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## STEPS
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Execute steps in `./steps-e/`:
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| Step | File | Purpose |
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|------|------|---------|
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| 01 | step-01-scope-change.md | Define what changes vs what stays |
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| 02 | step-02-analyze-impact.md | Analyze impact on existing code |
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| 03 | step-03-plan-implementation.md | Plan incremental implementation |
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| 04 | step-04-implement.md | Implement changes |
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| 05 | step-05-verify-and-document.md | Verify, regression check, document |
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**Flow:** 01 → 02 → 03 → 04 → 05
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### Critical Rules
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- **ALWAYS** map what is new vs what is modified vs what is untouched before coding
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- **ALWAYS** capture baseline state of existing features before modifying them
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- **ALWAYS** verify backward compatibility at each commit
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- **ALWAYS** plan incremental commits — never one giant change
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- **NEVER** break existing functionality to add new functionality
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- **NEVER** skip impact analysis — surprises in production are expensive
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---
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## AFTER COMPLETION
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1. Append a progress entry to `{output_folder}/_progress/00-design-log.md` under `## Progress`:
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`### [date] — Evolution: [what was evolved/added]`
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2. Suggest acceptance testing (Phase 5 [T]) to validate the changes
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