Visual improvements to debug mode for better information visibility

src/features/debug/content-log.js

@@ -1,4 +1,5 @@
 function createDebugContentLog({
+  previewDebugBody,
   DEBUG_BODY_LIMIT,
   debugState,
   renderDebugPanel
@@ -98,17 +99,7 @@ function createDebugContentLog({
   }
 
   function createDebugBody(text) {
-    if (text.length > DEBUG_BODY_LIMIT) {
-      return {
-        value: `${text.slice(0, DEBUG_BODY_LIMIT)}\n... truncated ${text.length - DEBUG_BODY_LIMIT} characters`,
-        truncated: true
-      };
-    }
-
-    return {
-      value: text || "(empty response body)",
-      truncated: false
-    };
+    return previewDebugBody(text, DEBUG_BODY_LIMIT);
   }
 
   function headersToObject(headers) {
@@ -137,13 +128,16 @@ function createDebugContentLog({
 
   function formatDebugBody(body) {
     const text = body || "(none)";
-
-    if (debugState.debugSecretsVisible) {
-      return text;
-    }
-
     try {
-      return JSON.stringify(maskSensitiveDebugValue(JSON.parse(text)), null, 2);
+      const normalized = String(text).replace(/^\uFEFF/, "").trimStart()
+        .replace(/^\)\]\}',?\s*/, "")
+        .replace(/^while\s*\(1\);\s*/, "");
+      let value = JSON.parse(normalized);
+      // Some services serialize their JSON document inside a JSON string.
+      for (let depth = 0; depth < 2 && typeof value === "string" && /^[\s]*[\[{]/.test(value); depth += 1) {
+        try { value = JSON.parse(value); } catch { break; }
+      }
+      return JSON.stringify(debugState.debugSecretsVisible ? value : maskSensitiveDebugValue(value), null, 2);
     } catch (error) {
       return text;
     }