feat(all): add resilient server recovery and talent upgrades

go/internal/server/lifecycle/signals_unix.go

@@ -0,0 +1,12 @@
+//go:build !windows
+
+package lifecycle
+
+import (
+	"os"
+	"syscall"
+)
+
+func shutdownSignals() []os.Signal {
+	return []os.Signal{os.Interrupt, syscall.SIGTERM, syscall.SIGUSR2}
+}