usage

type Data struct {
	Events   []Event
	Prompts  []Prompt
	ToolUses []ToolUse
}

type Event struct {
	Timestamp             time.Time
	Model                 string
	SessionID             string
	Cwd                   string
	Version               string
	GitBranch             string
	InputTokens           int
	OutputTokens          int
	CacheCreationTokens   int // total = 5m + 1h
	CacheCreation5mTokens int
	CacheCreation1hTokens int
	CacheReadTokens       int
	ServiceTier           string
}

type ProgressFn func(filesDone, filesTotal int)

type Prompt struct {
	Timestamp time.Time
	SessionID string
	Cwd       string
}

type ToolKind int

type ToolUse struct {
	Timestamp time.Time
	SessionID string
	Cwd       string
	Kind      ToolKind
	Name      string // raw tool name (e.g. "Bash", "Skill", "mcp__engram__mem_save", "Agent")
	Target    string // resolved target: skill name, mcp tool name, agent subtype; empty for builtin
	MCPServer string // for MCP kind: server prefix (e.g. "plugin_engram_engram")
}