Fork tasks from snapshots; snapshot only when text follows tool calls

internal/claude/session.go

@@ -33,6 +33,7 @@ type Options struct {
 	Model       string
 	SessionID   string
 	Resume      string
+	ResumeAt    string
 	ForkSession bool
 	GitName     string
 	GitEmail    string
@@ -154,6 +155,14 @@ func (e Event) ParentToolUseID() (string, error) {
 	return msg.ParentToolUseID, err
 }
 
+func (e Event) UUID() (string, error) {
+	msg := struct {
+		UUID string `json:"uuid"`
+	}{}
+	err := json.Unmarshal(e.Raw, &msg)
+	return msg.UUID, err
+}
+
 func (e Event) TextDelta() (string, error) {
 	msg := struct {
 		ParentToolUseID *string `json:"parent_tool_use_id"`
@@ -326,6 +335,10 @@ func (s *Session) buildArgs(opts Options) ([]string, error) {
 		args = append(args, "--resume="+opts.Resume)
 	}
 
+	if opts.ResumeAt != "" {
+		args = append(args, "--resume-session-at="+opts.ResumeAt)
+	}
+
 	if opts.ForkSession {
 		args = append(args, "--fork-session")
 	}