fix: auto-detect version from go module info for go install

Author: santiagomed

version/version.go

@@ -1,11 +1,23 @@
 package version
 
-// These variables will be set during build time
+import "runtime/debug"
+
+// These variables will be set during build time via ldflags.
+// When installed via `go install`, they fall back to Go's embedded module info.
 var (
-	// Version is the current version of the application
-	Version = "dev"
-	// Commit is the git commit SHA at build time
-	Commit = "none"
-	// BuildDate is the date when the binary was built
+	Version   = ""
+	Commit    = "none"
 	BuildDate = "unknown"
 )
+
+func init() {
+	if Version != "" {
+		return
+	}
+	info, ok := debug.ReadBuildInfo()
+	if ok && info.Main.Version != "" && info.Main.Version != "(devel)" {
+		Version = info.Main.Version
+	} else {
+		Version = "dev"
+	}
+}