v0.20.0

Added

• New chainable schema builder at ata-validator/t. Each t.X(...) returns a plain JSON Schema literal, so the output drops straight into new Validator(...), defineSchema, Infer<S>, and the AOT pipeline with no adapter. The migration target is TypeBox: rename import { Type } from '@sinclair/typebox' to import { t } from 'ata-validator/t' and keep the same authoring shape while picking up ata's runtime and AOT precompile.

  ```ts
  import { t } from 'ata-validator/t'
  import { Validator, type Infer } from 'ata-validator'

  const User = t.object({
  id: t.integer(),
  name: t.string({ minLength: 1 }),
  email: t.optional(t.string({ format: 'email' })),
  role: t.union([t.literal('admin'), t.literal('user')]),
  })
  type User = Infer
  const v = new Validator(User)
  ```

  Covered: primitives (`string`, `number`, `integer`, `boolean`, `null`), composites (`object` with `optional` keys, `array`, `tuple`, `record`, `union`, `intersect`, `literal`, `const`, `enum`), and refs (`ref`). Optionality is carried by a Symbol-keyed marker that the emitted JSON Schema and ata's codegen never see; the parent `t.object` reads it to compute `required`.

Changed

• `Infer` now resolves object schemas without `properties` but with a schema-valued `additionalProperties` to `Record<string, V>` instead of `Record<string, unknown>`. Closes the last common JSON Schema shape that was not inferred.