Wizard: preserve prior profile until new config passes its test

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QKxGW1raAWaqeU8WdHsMsp

bin/omarchy-cn-ai-setup

@@ -50,15 +50,27 @@ if ! omarchy-cn-ai-secret get "$provider" > /dev/null 2>&1; then
   printf '%s' "$key" | omarchy-cn-ai-secret set "$provider"
 fi
 
+# Keep any existing profile intact until the new config proves itself
+profile_file="$CN_AI_PROFILE_DIR/$name.toml"
+if [[ -f $profile_file ]]; then
+  cp "$profile_file" "$profile_file.omarchycn-prev"
+fi
+
 omarchy-cn-ai-profile-create "$name" "$harness" "$provider" "$model"
 
-# Activate only after the test passes (or the user skips it)
 if gum confirm "运行连接测试？"; then
   if ! omarchy-cn-ai-test "$name"; then
-    echo "测试未通过，Profile $name 已创建但未设为默认；修复后运行: omarchycn ai profile use $name" >&2
+    if [[ -f $profile_file.omarchycn-prev ]]; then
+      mv "$profile_file.omarchycn-prev" "$profile_file"
+      echo "测试未通过，已恢复原 Profile $name" >&2
+    else
+      rm -f "$profile_file"
+      echo "测试未通过，Profile $name 未保留" >&2
+    fi
     exit 1
   fi
 fi
 
+rm -f "$profile_file.omarchycn-prev"
 omarchy-cn-ai-profile-use "$name"
 echo "完成。启动: omarchycn ai launch"