architect

# GabeDA Architecture Expert

## Purpose

This skill provides expert guidance for the GabeDA v2.1 refactored architecture. It focuses on implementing models, adding features, debugging execution logic, and maintaining architectural principles across the 34-module `/src` codebase.

**Core Expertise:**
- `/src` architecture (34 modules in 6 packages)
- 4-case logic execution engine
- Feature implementation (filters, attributes, aggregations)
- Dependency resolution and data flow
- External data integration patterns
- Frontend development (React + TypeScript + Vite)
- Testing strategies and validation

## When to Use This Skill

Invoke this skill when:
- Working with the `/src` refactored codebase (v2.1)
- Implementing new aggregation models (daily, weekly, monthly, customer, product)
- Adding filters, attributes, or computed features
- Debugging 4-case logic execution issues
- Configuring external data joins
- **Developing frontend features (React + TypeScript + Vite)**
- **Troubleshooting blank pages or HMR issues**
- Understanding data flow and persistence strategies
- Troubleshooting column naming or dependency resolution
- Ensuring architectural principles are maintained
- Creating tests in `/test` folder

**NOT for:** Business strategy, marketing content, data analysis notebooks (delegate to business, marketing, insights skills)

## Quick Start

**Essential Documents:**
- 📚 **[Feature Implementation Guide](../../../ai/architect/feature_implementation_guide.md)** - **PRIMARY GUIDE** for implementation
- 📖 **[Documentation Master Index](../../../ai/README.md)** - Central hub for all documentation
- 🧪 **[Test Manifest](../../../ai/testing/TEST_MANIFEST.md)** - Complete test catalog (197 tests)
- 📝 **[Documentation Guidelines](../../../ai/standards/DOCUMENTATION_STANDARD.md)** - Before creating any docs

**Key References:**
- [references/module_reference.md](references/module_reference.md) - 34 modules structure
- [references/4_case_logic.md](references/4_case_lo