fix(ci): resolve nix-update workflow issues

- Remove --use-update-script flag that breaks with flake-only repos
  (nix-update-script expects default.nix at repo root)
- Fix GitHub API jq filter for detecting prereleases
- Fix Summary step bash syntax for handling input variables
- Format lib/ files that were failing formatting check

lib/default.nix

@@ -3,10 +3,10 @@
 #   let
 #     m3taLib = inputs.m3ta-nixpkgs.lib.${system};
 #   in ...
-{ lib }: {
+{lib}: {
   # Port management utilities
-  ports = import ./ports.nix { inherit lib; };
+  ports = import ./ports.nix {inherit lib;};
 
   # OpenCode rules injection utilities
-  opencode-rules = import ./opencode-rules.nix { inherit lib; };
+  opencode-rules = import ./opencode-rules.nix {inherit lib;};
 }