get:
  tags: [Master data]
  summary: List departments
  description: Returns every department row.
  operationId: get-api-departments
  responses:
    "200":
      description: Department list.
      content:
        application/json:
          schema:
            type: object
            required: [items]
            properties:
              items:
                type: array
                items:
                  $ref: ../components/schemas.yaml#/Department
    "401":
      description: Missing session.
      content:
        application/json:
          schema:
            $ref: ../components/schemas.yaml#/Error
post:
  tags: [Master data]
  summary: Create a department
  description: Admin-only insert. Requires admin:settings.
  operationId: post-api-departments
  requestBody:
    required: true
    content:
      application/json:
        schema:
          type: object
          required: [code, name]
          properties:
            code:
              type: string
              example: FIN
            name:
              type: string
              example: Finance
  responses:
    "201":
      description: Created department.
      content:
        application/json:
          schema:
            $ref: ../components/schemas.yaml#/Department
    "400":
      description: Validation failed.
      content:
        application/json:
          schema:
            $ref: ../components/schemas.yaml#/Error
    "401":
      description: Missing session.
      content:
        application/json:
          schema:
            $ref: ../components/schemas.yaml#/Error
    "403":
      description: Caller lacks admin:settings.
      content:
        application/json:
          schema:
            $ref: ../components/schemas.yaml#/Error