Initial commit: Synology DSM API skill

- Add synology_api.py: DSM API client library
- Add synology_api_login.py: CLI tool for login and system info
- Add SKILL.md: Skill definition with usage examples
- Add CLAUDE.md: Developer documentation
- Add references/: Example configs and usage guide

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

references/hosts.json

@@ -0,0 +1,12 @@
+{
+  "home-nas": {
+    "url": "https://192.168.42.20:5001",
+    "user": "timmy",
+    "password_env": "DS_PASSWORD_HOME"
+  },
+  "office-nas": {
+    "url": "https://syno.office.local:5001",
+    "user": "timmy",
+    "password_env": "DS_PASSWORD_OFFICE"
+  }
+}