add bypass for worktrees

.envrc

@@ -1,4 +1,6 @@
 #!/bin/bash
 
+source .env.local
+
 use flake
 

flake.nix

@@ -236,7 +236,9 @@
             ];
 
             shellHook = ''
-              mod_worktrees
+              if [ -z "''${SKIP_MOD_WORKTREES}" ]; then
+                mod_worktrees
+              fi
             '';
           };
         }