Move lead delivery and the Merge & continue hold onto the coordinator

internal/agents/mergefacts.go

@@ -3,7 +3,9 @@ package agents
 import (
 	"context"
 	"errors"
+	"io/fs"
 	"log/slog"
+	"os"
 
 	"g.fc.run/ai/byre/internal/api"
 	"g.fc.run/ai/byre/internal/git"
@@ -98,6 +100,12 @@ func (m *Manager) refreshFacts(ctx context.Context, taskID string) {
 func (m *Manager) settleTaskFacts(ctx context.Context, t api.Task, p api.Project) error {
 	m.factsRun.Lock()
 	defer m.factsRun.Unlock()
+	if t.WorktreePath != "" {
+		_, err := os.Stat(t.WorktreePath)
+		if errors.Is(err, fs.ErrNotExist) {
+			return nil
+		}
+	}
 	g, err := m.gitFacts(ctx, t, p)
 	if err != nil {
 		slog.Error("compute merge facts", "task", t.Id, "err", err)