SOLID Astro — Modular Architecture

Agent Workflow (MANDATORY)

Before ANY implementation, use TeamCreate to spawn 3 agents:

1. fuse-ai-pilot:explore-codebase - Analyze project structure, naming, and existing patterns
2. fuse-ai-pilot:research-expert - Verify Astro 6 architecture best practices via Context7/Exa
3. mcp__context7__query-docs - Check Astro component API and TypeScript integration

After implementation, run fuse-ai-pilot:sniper for validation.

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Codebase Analysis (MANDATORY)

Before ANY implementation:

1. Explore src/ directory to understand existing architecture
2. Read existing similar files to follow established naming and patterns
3. Grep for similar function/component names before creating new ones
4. Identify where interfaces, utilities, and shared logic live

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DRY Enforcement (MANDATORY)

Before writing ANY new code:

1. Grep for similar logic — function names, class patterns, component names
2. Check src/lib/ for existing utilities
3. Check src/components/ for existing UI components
4. If logic appears in 2+ places → extract to src/lib/
5. If types appear in 2+ files → move to src/interfaces/

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Absolute Rules

• Files < 100 lines — split at 90
• All types in src/interfaces/ — never in component files
• JSDoc mandatory on all exported functions
• No business logic in src/pages/

See references/architecture.md, references/file-limits.md, references/solid-principles.md.

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Reference Guide

Concepts

Topic	Reference	When to Consult
SOLID principles	solid-principles.md	Architecture decisions
File limits	file-limits.md	When and how to split files
Interfaces	interfaces.md	TypeScript type organization
Architecture	architecture.md	Directory structure
DRY enforcement	dry-enforcement.md	Avoiding duplication
JSDoc	jsdoc.md	Documentation standards

Templates

Template	When to Use
component.md	Astro component with props + JSDoc
layout.md	Layout component with slots
service.md	Data fetching service function
interface.md	TypeScript interface file

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Forbidden

• Files > 100 lines (split at 90)
• TypeScript interfaces in component .astro files
• Business logic in src/pages/ files
• Direct CMS/API calls in components (use src/lib/ services)
• Copy-pasting logic instead of extracting shared function
• Missing JSDoc on exported functions, components, and types
• any TypeScript type