Duplicate properties in schema when class is redefined

[crmne]

When a schema class is redefined, properties are duplicated in the required array:

irb(main):006* class Person < RubyLLM::Schema
irb(main):007*   string :name
irb(main):008> end
=> [:name]
irb(main):009* class Person < RubyLLM::Schema
irb(main):010*   string :name
irb(main):011> end
=> [:name, :name]

This results in invalid JSON schema with duplicate required fields:

{
  "name": "Person",
  "description": null,
  "schema": {
    "type": "object",
    "properties": {
      "name": {
        "type": "string"
      }
    },
    "required": [
      "name",
      "name"
    ],
    "additionalProperties": false,
    "strict": true,
    "$defs": {}
  }
}

Expected behavior: When a class is redefined, properties should not be duplicated in the schema.

[danielfriis]

Looking into it asap @crmne !

[Julian194]

Ran into this issue twice now, but it helps if the schema class is in its own file.

[dlupu]

Hello, I run into the same problem (in rspec tests)

[manuelmeurer]

This also bit me a couple of times now. 😅
@danielfriis Any plan/idea how to resolve this?
Happy to work on a PR if you can give me a hint.