docs: note neovim cross-compile failure in overlay comments

flake.nix

@@ -111,6 +111,12 @@
       # wireshark-qt:
       #   SWITCHED to wireshark-cli. Same Qt6 multimedia → qtquick3d chain.
       #
+# neovim:
+#   `libnlua0.so` built for aarch64, luajit (x86_64) tries to load it
+#   during codegen (preload_nlua.lua). No clean override option.
+#   Fix: remove from system packages + install via native build
+#   once uConsole is set up as remote builder.
+
       # ==== How to build natively on uConsole ====
       # To native-compile these on the uConsole:
       # 1. Add uConsole as a remote builder (nix.buildMachines)