diff --git a/config-sub-converter/scripts/test-options.js b/config-sub-converter/scripts/test-options.js
index 108f592..366a716 100644
--- a/config-sub-converter/scripts/test-options.js
+++ b/config-sub-converter/scripts/test-options.js
@@ -15,32 +15,96 @@ function safeStringify(obj) {
   );
 }
 
-function globalKeysSample(limit = 200) {
+function pickEnvSample() {
   try {
-    const keys = Object.getOwnPropertyNames(globalThis).sort();
-    return keys.slice(0, limit);
+    const env = (typeof process !== "undefined" && process && process.env) ? process.env : null;
+    if (!env) return null;
+
+    // only show safe-ish keys, no full dump
+    const keys = Object.keys(env).sort();
+    const filtered = keys.filter(k =>
+      k.toLowerCase().includes("sub") ||
+      k.toLowerCase().includes("store") ||
+      k.toLowerCase().includes("script") ||
+      k.toLowerCase().includes("url") ||
+      k.toLowerCase().includes("option") ||
+      k.toLowerCase().includes("param")
+    );
+
+    const sample = {};
+    for (const k of filtered.slice(0, 50)) sample[k] = env[k];
+    return { keysCount: keys.length, filteredKeys: filtered.slice(0, 100), sample };
+  } catch (e) {
+    return { error: String(e) };
+  }
+}
+
+function getGlobalDollarKeys() {
+  try {
+    return Object.getOwnPropertyNames(globalThis).filter(k => k.startsWith("$")).sort();
   } catch {
     return [];
   }
 }
 
-const report = {
-  types: {
-    $content: typeof $content,
-    $files: typeof $files,
-    $options: typeof $options,
-    ProxyUtils: typeof ProxyUtils,
-    produceArtifact: typeof produceArtifact,
-  },
-  values: {
-    $contentPreview: (typeof $content === "string" ? $content.slice(0, 300) : $content),
-    $contentLength: (typeof $content === "string" ? $content.length : null),
-    $files: $files ?? null,
-    $options: $options ?? null,
-  },
-  globals: {
-    globalThisKeysSample: globalKeysSample(),
-  }
+// Safe "typeof" probes: never throws even if variable doesn't exist
+const probes = {
+  $content: typeof $content,
+  $files: typeof $files,
+  $options: typeof $options,
+
+  $params: typeof $params,
+  $args: typeof $args,
+  $arguments: typeof $arguments,
+  $argument: typeof $argument,
+  $argv: typeof $argv,
+
+  $ctx: typeof $ctx,
+  $context: typeof $context,
+  $request: typeof $request,
+  $req: typeof $req,
+  $url: typeof $url,
+  $scriptUrl: typeof $scriptUrl,
+  $script_url: typeof $script_url,
+
+  ProxyUtils: typeof ProxyUtils,
+  produceArtifact: typeof produceArtifact,
+
+  process: typeof process,
 };
 
-$content = safeStringify(report);
+const values = {};
+function maybeSet(name, getter) {
+  try {
+    const v = getter();
+    // Avoid huge outputs
+    if (typeof v === "string") values[name] = v.length > 800 ? v.slice(0, 800) + "…(truncated)" : v;
+    else values[name] = v;
+  } catch (e) {
+    values[name] = { error: String(e) };
+  }
+}
+
+maybeSet("$options", () => (typeof $options !== "undefined" ? $options : null));
+maybeSet("$params", () => (typeof $params !== "undefined" ? $params : null));
+maybeSet("$args", () => (typeof $args !== "undefined" ? $args : null));
+maybeSet("$arguments", () => (typeof $arguments !== "undefined" ? $arguments : null));
+maybeSet("$argument", () => (typeof $argument !== "undefined" ? $argument : null));
+maybeSet("$ctx", () => (typeof $ctx !== "undefined" ? $ctx : null));
+maybeSet("$request", () => (typeof $request !== "undefined" ? $request : null));
+maybeSet("$url", () => (typeof $url !== "undefined" ? $url : null));
+maybeSet("$scriptUrl", () => (typeof $scriptUrl !== "undefined" ? $scriptUrl : null));
+maybeSet("$script_url", () => (typeof $script_url !== "undefined" ? $script_url : null));
+
+maybeSet("$contentPreview", () => (typeof $content === "string" ? $content.slice(0, 300) : $content));
+maybeSet("$contentLength", () => (typeof $content === "string" ? $content.length : null));
+maybeSet("$files", () => (typeof $files !== "undefined" ? $files : null));
+
+const report = {
+  probes,
+  values,
+  globalDollarKeys: getGlobalDollarKeys(),
+  envSample: pickEnvSample(),
+};
+
+$content = safeStringify(report);
\ No newline at end of file