feat: add GitCommit/GitBranch/BuildTime in version info

internal/version/VERSION

@@ -1 +1 @@
-v5.0.0-beta-2503172016
+v5.0.0-beta-2503172040

internal/version/init.go

@@ -1,13 +0,0 @@
-package version
-
-import (
-	_ "embed"
-	"strings"
-)
-
-//go:embed VERSION
-var VERSION string
-
-func init() {
-	VERSION = strings.TrimSpace(VERSION)
-}

internal/version/version.go

@@ -0,0 +1,31 @@
+package version
+
+import (
+	"fmt"
+	"strings"
+
+	_ "embed"
+)
+
+//go:embed VERSION
+var VERSION string
+
+func init() {
+	VERSION = strings.TrimSpace(VERSION)
+}
+
+// 版本信息，在编译时通过 -ldflags 注入
+var (
+	GitCommit = "unknown"
+	GitBranch = "unknown"
+	BuildTime = "unknown"
+)
+
+func GetVersionInfo() string {
+	commitID := GitCommit
+	if len(commitID) > 8 {
+		commitID = commitID[:8]
+	}
+	return fmt.Sprintf("%s (branch=%s, commit=%s, build=%s)",
+		VERSION, GitBranch, commitID, BuildTime)
+}