---
description: {{PROJECT_NAME}} constructor-pattern coding rules
globs: **/*
alwaysApply: true
---

# {{PROJECT_NAME}} — Cursor Rules (MDC)

{{PROJECT_DESCRIPTION}}

## Constructor Pattern
1 file = 1 class = 1 responsibility. Function >30 lines = split. File >200 lines = decompose.

## Core Rules
- No patching — fix root cause, not symptoms
- Don't rewrite working code without reason
- Single Source of Truth — types, routes, enums in ONE place
- Types/interfaces BEFORE implementation
- Tests WITH code, never "later"

## Project Context
- Architecture decisions: see `DECISIONS.md`
- Project rules: see `CLAUDE.md`
- Current priorities: see `TODO.md`

## Forbidden
- Mixins, abstract factories, DI containers
- Rewriting working code without reason
- Committing .env, credentials, API keys
- Adding abstractions for one-time operations

## Session Protocol
- Read `DECISIONS.md` before making architectural choices
- Document new decisions in `DECISIONS.md`