---
description:
globs:
alwaysApply: true
---


- When creating a new type, interface, or class:
  - BEFORE creating it, the AI must search the codebase for **similar structures**, not just names.
  - Run a structural search, e.g.:
    - `rg "interface " .`
    - `rg "type " .`
  - Compare the fields/properties of the intended new type with existing ones.
  - If an existing type/interface has the same or overlapping structure, reuse, import, or extend it instead of creating a duplicate.
  - Only create a new type when no equivalent structure exists.

- File naming rules:
  - All new files must use **camelCase**.
  - Never use `-` (kebab-case) or `_` (snake_case) in file names.