host

type CompactionPolicy struct {
	// Approximate token counts. A nonpositive Budget disables new summaries;
	// ForWindow can derive or cap it from a model window. KeepRecent is bounded
	// to at least one token and at most half the effective budget.
	Budget, KeepRecent int
	// MaxInputTokens is the model's reserve-aware input ceiling. Budget remains
	// a compaction trigger/target; immutable host tools can exceed a very low
	// target while still fitting the model. Without a known ceiling, Budget is
	// also the fit bound.
	MaxInputTokens int
	// Force permits summarizing a completed latest turn after a confirmed
	// pre-output context rejection. It never replays tools or changes history.
	Force bool
	// Archive saves a full tool result before a request-only preview replaces
	// it. The returned locator must be readable by this run's retrieval tool.
	Archive func(context.Context, string, string, string) (string, error)
	// Task is the consumer's current user request, retained verbatim alongside
	// summaries. It is data, never a system instruction or extra permission.
	Task      string
	Summarize func(context.Context, json.RawMessage, string) (string, protocol.Usage, error)
}

type Compactor struct {
	// contains filtered or unexported fields
}

type CompactorOptions struct {
	Revision string
	Policy   CompactionPolicy
	Record   func(context.Context, json.RawMessage) error
	Usage    func(protocol.Usage)
}

type ContextBudgetError struct{ Estimated, Budget int }

type Summary struct {
	Revision     string          `json:"revision"`
	PrefixCount  int             `json:"prefix_count"`
	PrefixDigest string          `json:"prefix_digest"`
	Message      json.RawMessage `json:"message"`
}