feat: Pro 买断门禁、SFTP 精简与批量多机改造

新增 entitlement/license IPC 与 Waffo 一次性结账服务骨架，挂载 AI/转发/代理/串口/广播/批量导入导出门禁；批量执行改为结果矩阵并复用连接池，SFTP 工具栏图标化并去掉已连接条，同时完善跨平台本地终端与窗口配置。

Co-authored-by: Cursor <cursoragent@cursor.com>

license-server/.env.example

@@ -0,0 +1,22 @@
+# Waffo Pancake (NEVER commit real keys)
+WAFFO_MERCHANT_ID=MER_586CtDwoHUbrnFJyudo3t4
+WAFFO_PRIVATE_KEY=
+WAFFO_ENVIRONMENT=test
+
+# Store / product (from Pancake Dashboard)
+WAFFO_STORE_ID=
+WAFFO_STORE_SLUG=opsxshell-pwsi6m4n
+WAFFO_PRODUCT_ID=PROD_0pcnzzT4nalEkkcdyIUoD5
+
+# Optional: permanent hosted checkout URL (preferred when set)
+WAFFO_CHECKOUT_URL=https://pancake.waffo.ai/store/opsxshell-pwsi6m4n/product/PROD_0pcnzzT4nalEkkcdyIUoD5?type=onetime&currency=USD&test=true
+
+# One-time Pro price used by bootstrap (USD)
+WAFFO_PRODUCT_PRICE=29.00
+
+# Must match desktop verify key (src-tauri license service DEFAULT / OPSX_LICENSE_HMAC)
+OPSX_LICENSE_HMAC=opsxshell-dev-license-hmac-v1-change-in-prod
+
+PORT=8787
+SUCCESS_URL=opsxshell://pro/activated
+PUBLIC_BASE_URL=http://127.0.0.1:8787