Initial commit: _deploy_app skill

Deploy new apps or push updates to existing deployments via
Docker Compose + Caddy + Gitea webhooks. Multi-server profiles,
auto-detection of deployment status, full infrastructure provisioning.

- SKILL.md: 715-line workflow documentation
- scripts/detect_deployment.py: deployment status detection
- scripts/validate_compose.py: compose file validation
- references/: infrastructure, compose patterns, Caddy patterns
- assets/: Makefile and compose templates
- config.json: mew server profile

.gitignore

@@ -0,0 +1,3 @@
+__pycache__/
+*.pyc
+.DS_Store