feat: Inject copyright year at build time and update version handling in build script

build.ps1

@@ -78,13 +78,14 @@ if (-not (Test-Path $OutputDir)) {
     Write-Host "Created output directory: $OutputDir" -ForegroundColor Green
 }
 
-# Build flags — always inject version; release builds also strip debug symbols.
+# Build flags — always inject version and copyright year; release builds also strip debug symbols.
-$versionLdflag = "-X main.version=$gitTag"
+$buildYear = (Get-Date).Year
+$injectedFlags = "-X main.version=$gitTag -X main.copyrightYear=$buildYear"
 if ($Release) {
-    $ldflags = "-s -w $versionLdflag"
+    $ldflags = "-s -w $injectedFlags"
     Write-Host "Building RELEASE version (optimized, no debug symbols)..." -ForegroundColor Green
 } else {
-    $ldflags = $versionLdflag
+    $ldflags = $injectedFlags
     Write-Host "Building DEBUG version (with debug symbols)..." -ForegroundColor Yellow
 }
 

main.go

@@ -14,13 +14,14 @@ import (
 	"ekdns/resolver"
 )
 
-// version is set at build time via -ldflags "-X main.version=..."
+// version and copyrightYear are set at build time via -ldflags.
 var version = "dev"
+var copyrightYear = "2024"
 
 func main() {
 	// Banner (always printed to stdout).
 	fmt.Printf("ekDNSHelper %s\n", version)
-	fmt.Println("Copyright (c) 2024 Emberkom LLC")
+	fmt.Printf("Copyright (c) %s Emberkom LLC\n", copyrightYear)
 	fmt.Println("")
 
 	if len(os.Args) < 2 {