feat: sap-cli skill v2.1.0 — self-contained distributable package

- assets/: sap-cli source (v2.1.0, 26 commands, 16 object types)
- references/: tool constraints + error handling (self-contained)
- scripts/setup.py: one-click install/config/verify
- SKILL.md: full command reference + dual-platform install guide
- VERSION: 2.1.0

Built from D:/Codespace/sap-cli via scripts/pack_skill.py

assets/config.ini.example

@@ -0,0 +1,18 @@
+[SAP]
+host = http://your-sap-server:8000
+client = 100
+user = your_username
+password = your_password
+
+; 多系统配置示例:
+; [DEV]
+; host = http://dev-sap-server:8000
+; client = 100
+; user = dev_user
+; password = dev_password
+;
+; [QAS]
+; host = http://qas-sap-server:8000
+; client = 200
+; user = qas_user
+; password = qas_password