feat: implemented logging in scripts and fixed some logical problems

src/lib/scripts/nix.ts

@@ -1,5 +1,3 @@
-// Nix declarative config generator
-
 import { type PackageInfo } from './shared';
 import { isUnfreePackage } from '../nixUnfree';
 
@@ -7,16 +5,19 @@ export function generateNixConfig(packages: PackageInfo[]): string {
     const validPackages = packages.filter(p => p.pkg.trim());
     if (validPackages.length === 0) return '# No packages selected';
 
+    const date = new Date().toISOString().split('T')[0];
     const sortedPkgs = validPackages.map(p => p.pkg.trim()).sort();
     const packageList = sortedPkgs.map(pkg => `    ${pkg}`).join('\n');
 
-    // Add unfree warning if needed
     const unfreePkgs = sortedPkgs.filter(pkg => isUnfreePackage(pkg));
     const unfreeComment = unfreePkgs.length > 0
         ? `# Unfree: ${unfreePkgs.join(', ')}\n# Requires: nixpkgs.config.allowUnfree = true;\n\n`
         : '';
 
-    return `${unfreeComment}environment.systemPackages = with pkgs; [
+    return `# Generated by tuxmate — ${date}
+# https://github.com/abusoww/tuxmate
+
+${unfreeComment}environment.systemPackages = with pkgs; [
 ${packageList}
 ];`;
 }