types

type Document struct {
	Content    string            // The document text/chunk content
	SourcePath string            // File path or document identifier
	Metadata   map[string]string // Custom metadata (e.g., date, author, type, tags)
	ChunkIndex int               // Position of this chunk within the source document (0-based)
}

type Event struct {
	Type         string
	StrategyName string // Name of the component emitting the event (strategy name, "reranker", "fusion", etc.)
	Message      string
	Progress     *Progress
	Error        error
	TotalTokens  int     // For usage events
	Cost         float64 // For usage events
}

type Progress struct {
	Current int
	Total   int
}