fix(agent): minimal env and explicit project dir for compose, resolve every config file's symlinks (#7)

cmd/agent/main.go

@@ -75,8 +75,11 @@ func run() error {
 func logMounts(ctx context.Context, cli updater.SelfInspector, selfID string, log *slog.Logger) {
 	roots, err := updater.MountRoots(ctx, cli, selfID)
 	if err != nil || len(roots) == 0 {
-		log.Warn("no_stack_mounts", "error", err,
-			"hint", "Compose updates will fail; mount each stacks directory at the same path, read-write")
+		attrs := []any{"hint", "Compose updates will fail; mount each stacks directory at the same path, read-write"}
+		if err != nil {
+			attrs = append(attrs, "error", err)
+		}
+		log.Warn("no_stack_mounts", attrs...)
 		return
 	}
 	log.Info("stack_mounts", "roots", roots)