[skip ci] Update version to v1.5.21

config.py

@@ -42,7 +42,7 @@ VERSION = "1.0"
 WINDOW_TITLE = "AI回复连接入口-V1.0"
 
 # 应用版本号（用于版本检查）
-APP_VERSION = "1.5.20"
+APP_VERSION = "1.5.21"
 
 # 平台特定配置
 PLATFORMS = {

version_history.json

@@ -1,4 +1,20 @@
 [
+  {
+    "version": "1.5.21",
+    "update_type": "patch",
+    "content": "[patch] 修正pdd不识别系统消息的问题",
+    "author": "Gitea Actions Bot",
+    "commit_hash": "f651e0e3f02a42f14c86a1d54f366e06cd9b5c49",
+    "commit_short_hash": "f651e0e3",
+    "branch": "develop",
+    "release_time": "2025-10-13 14:04:33",
+    "download_url": "https://shuidrop-chat-server.ks3-cn-guangzhou.ksyuncs.com/installers/ShuiDi_AI_Assistant_Setup_v1.5.21.exe",
+    "stats": {
+      "files_changed": 1,
+      "lines_added": 3259,
+      "lines_deleted": 3254
+    }
+  },
   {
     "version": "1.5.20",
     "update_type": "patch",