{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "urn:orbiplex:schema:plain-comment:v1",
  "title": "PlainComment v1",
  "description": "Machine-readable schema for the simplest Agora content payload: a plain-text comment. Used as the inner `content` of an `agora-record.v1` envelope when `content/schema = plain-comment.v1`. The envelope is the sole source of truth for schema identity: this object does NOT carry a `schema` discriminator, because the envelope's `content/schema` field already names the contract.",
  "type": "object",
  "additionalProperties": true,
  "x-dia-workflow": "project",
  "x-dia-status": "draft",
  "x-dia-basis": [
    "doc/project/40-proposals/035-agora-topic-addressed-record-relay.md"
  ],
  "required": [
    "body"
  ],
  "properties": {
    "body": {
      "type": "string",
      "minLength": 1,
      "maxLength": 16384,
      "description": "The textual body of the comment. Plain, unformatted text by default. Renderers MUST treat the content as untrusted input and escape appropriately before display."
    },
    "body/format": {
      "type": "string",
      "enum": [
        "text/plain",
        "text/markdown"
      ],
      "default": "text/plain",
      "description": "Optional content type hint for rendering. `text/plain` is the default. `text/markdown` requests CommonMark rendering. Renderers MUST NOT execute embedded scripts or interpret active content regardless of format."
    },
    "thread/title": {
      "type": "string",
      "minLength": 1,
      "maxLength": 160,
      "description": "Optional title for a thread opened by this comment. Projection consumers MUST interpret this field only when the enclosing Agora record is a root comment without `record/parent`; on replies it is ignored or surfaced as a diagnostic."
    },
    "lang": {
      "type": "string",
      "minLength": 2,
      "maxLength": 35,
      "pattern": "^[A-Za-z]{2,3}(-[A-Za-z0-9]{1,8})*$",
      "description": "Optional BCP 47 language tag for the comment body. Duplicates the envelope `record/lang` when both are present; when they disagree, the inner value takes precedence for rendering."
    }
  }
}