{
  "type": "object",
  "required": [
    "version",
    "tasks"
  ],
  "properties": {
    "$schema": {
      "type": "string",
      "description": "JSON Schema URL used by editors for validation and autocomplete."
    },
    "version": {
      "type": "number",
      "const": 1,
      "description": "Task document format version."
    },
    "tasks": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "id",
          "title",
          "type",
          "status",
          "priority",
          "createdAt",
          "updatedAt"
        ],
        "properties": {
          "id": {
            "type": "string",
            "minLength": 1,
            "maxLength": 128,
            "description": "Stable unique task id."
          },
          "title": {
            "type": "string",
            "maxLength": 200,
            "description": "Short task title. May be empty when the task has description content."
          },
          "description": {
            "type": "string",
            "maxLength": 10000,
            "description": "Optional detailed task description."
          },
          "type": {
            "anyOf": [
              {
                "type": "string",
                "const": "bug"
              },
              {
                "type": "string",
                "const": "feature"
              },
              {
                "type": "string",
                "const": "improvement"
              }
            ]
          },
          "status": {
            "anyOf": [
              {
                "type": "string",
                "const": "backlog"
              },
              {
                "type": "string",
                "const": "todo"
              },
              {
                "type": "string",
                "const": "in-progress"
              },
              {
                "type": "string",
                "const": "done"
              }
            ]
          },
          "priority": {
            "anyOf": [
              {
                "type": "string",
                "const": "low"
              },
              {
                "type": "string",
                "const": "medium"
              },
              {
                "type": "string",
                "const": "high"
              },
              {
                "type": "string",
                "const": "urgent"
              }
            ]
          },
          "sessionId": {
            "type": "string",
            "minLength": 1,
            "maxLength": 512,
            "description": "Optional Pi session associated with this task."
          },
          "createdAt": {
            "type": "string",
            "format": "date-time",
            "description": "RFC 3339 creation timestamp."
          },
          "updatedAt": {
            "type": "string",
            "format": "date-time",
            "description": "RFC 3339 last-update timestamp."
          }
        },
        "additionalProperties": false
      },
      "maxItems": 10000,
      "description": "Project tasks. Task ids must be unique."
    }
  },
  "$id": "https://unpkg.com/pi-ui-extend/schemas/tasks.json",
  "$schema": "https://json-schema.org/draft-07/schema#",
  "title": "Pix Project Tasks",
  "description": "Project-scoped task document stored in <cwd>/.pi/tasks.jsonc.",
  "additionalProperties": false
}