chore(tools): 添加解密与资源调试脚本

- 增加解密/资源/表情/媒体定位等调试脚本，便于本地排查与验证

tools/test_image_api.py

@@ -0,0 +1,17 @@
+#!/usr/bin/env python3
+"""测试图片 API"""
+import requests
+
+r = requests.get(
+    'http://localhost:8000/api/chat/media/image',
+    params={
+        'account': 'wxid_v4mbduwqtzpt22',
+        'md5': '8753fcd3b1f8c4470b53551e13c5fbc1',
+        'username': 'wxid_qmzc7q0xfm0j22'
+    }
+)
+print(f'Status: {r.status_code}')
+print(f'Content-Type: {r.headers.get("content-type")}')
+print(f'Content-Length: {len(r.content)}')
+if r.status_code != 200:
+    print(f'Response: {r.text[:500]}')