id: no-void-output
language: typescript
severity: error
message: Do not use z.void() for output - use successResponseSchema instead
note: |
  Endpoints should return `{ success: true }` instead of void.
  This makes the API more explicit and avoids issues with TypeScript
  expecting void-returning Promises.

  Replace `.output(z.void())` with `.output(successResponseSchema)` and ensure
  the handler returns `{ success: true }`.
rule:
  pattern: $EXPR.output(z.void())
files:
  - packages/api-contract/**/*.ts