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

config.example.json

@@ -0,0 +1,42 @@
+{
+  "active_profile": "my-server",
+  "profiles": {
+    "my-server": {
+      "server": {
+        "name": "my-server",
+        "ip": "1.2.3.4",
+        "ssh_user": "deploy-user",
+        "ssh_host": "my-server",
+        "deploy_map": "/etc/deploy-listener/deploy-map.json",
+        "deploy_env": "/etc/deploy-listener/deploy-listener.env",
+        "caddyfile": "/data/docker/caddy/Caddyfile",
+        "caddy_container": "caddy",
+        "caddy_compose_dir": "/data/docker/caddy",
+        "compose_dir": "/srv/git",
+        "proxy_network": "proxy",
+        "proxy_gateway": "10.0.12.1"
+      },
+      "gitea": {
+        "external_url": "https://git.example.com",
+        "internal_url": "http://gitea-container-ip:3000",
+        "api_path": "/api/v1",
+        "default_owner": "your-username",
+        "ssh_host": "git.example.com",
+        "ssh_port": 2222
+      },
+      "webhook": {
+        "url": "https://deploy.example.com/webhook",
+        "events": ["push"],
+        "branch_filter": "main master"
+      },
+      "domains": {
+        "default_pattern": "{app}.example.com",
+        "available": ["example.com"]
+      },
+      "secrets": {
+        "gitea_token": "~/.claude/secrets/gitea.json",
+        "cloudflare_token": "~/.claude/secrets/cloudflare.json"
+      }
+    }
+  }
+}