cx

type Engine struct {
	Provider provider.Provider
	Model    string
	System   string
	Tools    *tool.Registry
	Gate     agent.Gate
	// Workspace is the working directory of the file and shell tools. When it is
	// a git repo, the loop uses it to catch a turn that rewrote a test instead of
	// fixing the code under test and nudge it back. Empty disables that check.
	Workspace string
	// MaxRounds caps the model calls in one turn. Zero means unbounded, the normal
	// mode: the convergence governor, not a fixed length, decides when a productive
	// run ends. A positive value is a hard budget, used to bound a probe or A/B run
	// so the loop stops after a set number of rounds instead of playing out in full.
	MaxRounds int
	// Compaction shapes the transcript put on the wire so an older tool result is
	// not re-sent whole on every later round (see compact.go). All three default to
	// zero, which leaves compaction off and the full transcript sent as before, so
	// a plain build is unchanged. CompactTail is the recent-window floor kept
	// verbatim; CompactMinBytes is the size a result must exceed to be eligible;
	// CompactBudgetTokens, when positive, only sheds while the transcript estimate
	// exceeds that budget (context-length-aware), else shedding is unconditional.
	CompactTail         int
	CompactMinBytes     int
	CompactBudgetTokens int
}