Improve API response formatting and structure in handlers

package.json

@@ -1,6 +1,6 @@
 {
   "name": "nodewarden",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "description": "Minimal Bitwarden-compatible server running on Cloudflare Workers",
   "author": "shuaiplus",
   "license": "LGPL-3.0",
@@ -21,13 +21,13 @@
   "cloudflare": {
     "bindings": {
       "JWT_SECRET": {
-        "description": "用于签名 JWT 的密钥。请输入一个随机的复杂字符串（建议 32 位以上）"
+        "description": "Secret used to sign JWTs. Use a strong random string (32+ characters recommended)"
       },
-      "VAULT": {
-        "description": "用于存储密码库数据的 KV 存储"
+      "DB": {
+        "description": "D1 database for storing vault data"
       },
       "ATTACHMENTS": {
-        "description": "用于存储文件附件的 R2 存储桶"
+        "description": "R2 bucket for storing file attachments"
       }
     }
   },