docs: rewrite README with structured overview and quick start guide

Replaces the minimal project description with a comprehensive README
including a component overview table, quick start instructions, common
Ansible operations, and links to detailed documentation. Aligns with
Red Panda Approval™ standards.

ansible/kernos/kernos.service

@@ -0,0 +1,23 @@
+[Unit]
+Description=Kernos MCP Server
+After=network.target
+
+[Service]
+Type=simple
+User=nobody
+Group=nogroup
+WorkingDirectory=/srv/kernos
+ExecStart=/srv/kernos/.venv/bin/kernos
+EnvironmentFile=/srv/kernos/.env
+Restart=on-failure
+RestartSec=5
+
+# Security hardening
+NoNewPrivileges=true
+ProtectSystem=strict
+ProtectHome=read-only
+PrivateTmp=false
+ReadWritePaths=/
+
+[Install]
+WantedBy=multi-user.target