{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Symphony orchestrator state",
  "type": "object",
  "required": ["running", "retry_attempts", "claimed", "completed"],
  "properties": {
    "running": {
      "type": "object",
      "additionalProperties": {
        "type": "object",
        "required": ["task_id", "worktree", "started_at"],
        "properties": {
          "task_id": { "type": "string" },
          "worktree": { "type": "string" },
          "started_at": { "type": "string", "format": "date-time" },
          "issue_identifier": { "type": "string" }
        }
      }
    },
    "retry_attempts": {
      "type": "object",
      "additionalProperties": {
        "type": "object",
        "required": ["attempt", "due_at_ms"],
        "properties": {
          "attempt": { "type": "integer", "minimum": 1 },
          "due_at_ms": { "type": "integer" },
          "last_error": { "type": ["string", "null"] }
        }
      }
    },
    "claimed":   { "type": "array", "items": { "type": "string" } },
    "completed": { "type": "array", "items": { "type": "string" } },
    "totals": {
      "type": "object",
      "properties": {
        "ticks":       { "type": "integer" },
        "dispatched":  { "type": "integer" },
        "completed":   { "type": "integer" },
        "failed":      { "type": "integer" }
      }
    }
  }
}