Gateway: fix stale self version in status output (#32655)

Merged via squash.

Prepared head SHA: b9675d1f90
Co-authored-by: liuxiaopai-ai <73659136+liuxiaopai-ai@users.noreply.github.com>
Co-authored-by: gumadeiras <5599352+gumadeiras@users.noreply.github.com>
Reviewed-by: @gumadeiras

src/version.ts

@@ -90,13 +90,28 @@ export type RuntimeVersionEnv = {
   [key: string]: string | undefined;
 };
 
+export const RUNTIME_SERVICE_VERSION_FALLBACK = "unknown";
+
+export function resolveUsableRuntimeVersion(version: string | undefined): string | undefined {
+  const trimmed = version?.trim();
+  // "0.0.0" is the resolver's hard fallback when module metadata cannot be read.
+  // Prefer explicit service/package markers in that edge case.
+  if (!trimmed || trimmed === "0.0.0") {
+    return undefined;
+  }
+  return trimmed;
+}
+
 export function resolveRuntimeServiceVersion(
   env: RuntimeVersionEnv = process.env as RuntimeVersionEnv,
-  fallback = "dev",
+  fallback = RUNTIME_SERVICE_VERSION_FALLBACK,
 ): string {
+  const runtimeVersion = resolveUsableRuntimeVersion(VERSION);
+
   return (
     firstNonEmpty(
       env["OPENCLAW_VERSION"],
+      runtimeVersion,
       env["OPENCLAW_SERVICE_VERSION"],
       env["npm_package_version"],
     ) ?? fallback