Add federation worker and canonical handoffs

cmd/orchestra/main_test.go

@@ -0,0 +1,35 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"orchestra/internal/registry"
+)
+
+type unreachable struct{}
+
+func (unreachable) Reachable(string, time.Duration) bool { return false }
+
+func TestFederatedReachabilityDefersRemoteHerdrToWorkerHeartbeat(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "config.json")
+	if err := os.WriteFile(path, []byte(`{
+  "machines":[{"id":"homesrv","address":"192.168.1.104:9145"},{"id":"workpc","address":"192.168.1.105:9145"}],
+  "herdrs":[{"id":"local","machine_id":"homesrv","harness":"opencode"},{"id":"remote","machine_id":"workpc","harness":"opencode"}]
+	}`), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	r, err := registry.Load(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	check := federatedReachability{base: unreachable{}, remote: remoteHerdrAddresses(r, "homesrv")}
+	if check.Reachable("192.168.1.105:9245", time.Second) != true {
+		t.Fatal("remote herdr should be admitted for worker heartbeat gating")
+	}
+	if check.Reachable("192.168.1.104:9245", time.Second) {
+		t.Fatal("local herdr should still require its TCP probe")
+	}
+}