persist and reconcile runtime sessions

cmd/orchestra/main.go

@@ -17,6 +17,7 @@ import (
 	"orchestra/internal/router"
 	"orchestra/internal/store"
 	"os"
+	"path/filepath"
 	"strconv"
 	"strings"
 	"time"
@@ -65,7 +66,7 @@ func main() {
 					log.Printf("herdr %s has unsupported harness %q", h.ID, h.Harness)
 				}
 			}
-			coordinator := &orchestrator.Coordinator{Store: s, Worktrees: orchestrator.GitWorktrees{Root: root, Repo: repo}, Adapters: orchestrator.AdapterFactory{Herdrs: adapters}}
+			coordinator := &orchestrator.Coordinator{Store: s, StatePath: filepath.Join(dir, "runtime-sessions.json"), Worktrees: orchestrator.GitWorktrees{Root: root, Repo: repo}, Adapters: orchestrator.AdapterFactory{Herdrs: adapters}}
 			rt.OnLease = func(e domain.Event) error { return coordinator.Start(context.Background(), e) }
 			hard := 0.75
 			if v, parseErr := strconv.ParseFloat(os.Getenv("ORCHESTRA_OCCUPANCY_HARD"), 64); parseErr == nil && v > 0 && v < 1 {