Allow CPA_AUTO_IMPORT_REMOTE from .env

Enable remote CPA import via env flag with priority over config.json, and load project .env when resolving remote settings.

.env.example

@@ -29,7 +29,9 @@ GROK2API_APP_KEY=
 
 # ===== CPA 远程自动导入（Management API）=====
 # 写出 xai-*.json 后 POST 到 {CPA_REMOTE_BASE}/v0/management/auth-files
-# 需同时在 config.json 设 cpa_auto_import_remote=true，或仅用环境变量时也要打开该开关
-# CPA_REMOTE_BASE=http://127.0.0.1:8317
-# CPA_REMOTE_PASSWORD=
-# 兼容别名：CPA_MANAGEMENT_PASSWORD / MANAGEMENT_PASSWORD
+# 1/true/yes/on 开启；0/false/no/off 关闭（优先于 config.json 的 cpa_auto_import_remote）
+CPA_AUTO_IMPORT_REMOTE=0
+# 地址只填根，如 http://127.0.0.1:8317
+CPA_REMOTE_BASE=
+CPA_REMOTE_PASSWORD=
+# 兼容别名：CPA_MANAGEMENT_PASSWORD / MANAGEMENT_PASSWORD / CPA_AUTO_IMPORT