Visual improvements to debug mode for better information visibility

dist/firefox/background.js

@@ -19,6 +19,48 @@ function createMessageTypes() {
   });
 }
 
+// Source: src/shared/debug-body.js
+function createDebugBodyPreview(text, limit) {
+  if (text.length <= limit) return { value: text || "(empty response body)", truncated: false };
+  try {
+    const normalized = text.replace(/^\uFEFF/, "").trimStart()
+      .replace(/^\)\]\}',?\s*/, "").replace(/^while\s*\(1\);\s*/, "");
+    let value = JSON.parse(normalized);
+    for (let depth = 0; depth < 2 && typeof value === "string" && /^\s*[\[{]/.test(value); depth += 1) {
+      try { value = JSON.parse(value); } catch { break; }
+    }
+    // Bound retained data without cutting JSON syntax or losing sensitive field names.
+    let remaining = Math.max(0, limit - 256);
+    const visit = (node, depth = 0) => {
+      if (remaining <= 64 || depth >= 30) return "[omitted from debug preview]";
+      if (node === null || typeof node !== "object") {
+        const serialized = JSON.stringify(node);
+        if (serialized.length > remaining) {
+          remaining = 0;
+          return "[omitted from debug preview]";
+        }
+        remaining -= serialized.length + 1;
+        return node;
+      }
+      const result = Array.isArray(node) ? [] : Object.create(null);
+      remaining -= 2;
+      for (const key of Object.keys(node)) {
+        const cost = Array.isArray(node) ? 1 : JSON.stringify(key).length + 2;
+        if (remaining < cost + 64) break;
+        remaining -= cost;
+        result[key] = visit(node[key], depth + 1);
+      }
+      return result;
+    };
+    return {
+      value: JSON.stringify({ debugNotice: "Partial response preview: remaining fields/items omitted due to the debug size limit.", preview: visit(value) }),
+      truncated: true
+    };
+  } catch {
+    return { value: `${text.slice(0, limit)}\n... truncated ${text.length - limit} characters`, truncated: true };
+  }
+}
+
 // Source: src/background/contracts.js
 function createBackgroundContracts() {
   const ORACLE_DOMAIN = "eeho.fa.us2.oraclecloud.com";
@@ -742,6 +784,7 @@ function createSpaResponseShapes() {
 
 // Source: src/services/http/background-json.js
 function createHttpBackgroundJson({
+  previewDebugBody,
   DEBUG_BODY_LIMIT,
   environment
 }) {
@@ -863,17 +906,7 @@ function createHttpBackgroundJson({
   }
 
   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 normalizeDebugHeaders(headers) {
@@ -1831,6 +1864,7 @@ function createBackgroundApplication(overrides = {}) {
   });
   const spaResponseShapes = createSpaResponseShapes();
   const httpBackgroundJson = createHttpBackgroundJson({
+    previewDebugBody: createDebugBodyPreview,
     DEBUG_BODY_LIMIT: contracts.DEBUG_BODY_LIMIT,
     environment
   });