feat: add MCP server templates and deployment infrastructure

Introduce a Helm-chart-like template system for MCP servers. Templates are
YAML files in templates/ that get seeded into the DB on startup. Users can
browse them with `mcpctl get templates`, inspect with `mcpctl describe
template`, and instantiate with `mcpctl create server --from-template=`.

Also adds Portainer deployment scripts, mcplocal systemd service,
Streamable HTTP MCP endpoint, and RPM packaging for mcpctl-local.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/mcpd/package.json

@@ -23,11 +23,13 @@
     "bcrypt": "^5.1.1",
     "dockerode": "^4.0.9",
     "fastify": "^5.0.0",
+    "js-yaml": "^4.1.0",
     "zod": "^3.24.0"
   },
   "devDependencies": {
     "@types/bcrypt": "^5.0.2",
     "@types/dockerode": "^4.0.1",
+    "@types/js-yaml": "^4.0.9",
     "@types/node": "^25.3.0"
   }
 }