feat(mcp): add 8 new validated MCP servers

Add actual-mcp, beszel-mcp, gitea-mcp, ha-mcp, limesurvey-mcp,
linkwarden-mcp, mcp-grafana, and superset-mcp with full validation.

Key fixes applied:
- linkwarden-mcp: Added 'stdio' subcommand to ENTRYPOINT
- mcp-grafana: Fixed build path (./cmd/mcp-grafana) and added '--transport stdio' flag

All 8 servers validated with MCP protocol handshake.
Working MCP server count: 24 (up from 16)

💘 Generated with Crush

Assisted-by: GLM-5 via Crush <crush@charm.land>

dockerfiles/actual-mcp/Dockerfile

@@ -0,0 +1,13 @@
+FROM node:22-alpine
+
+WORKDIR /app
+
+COPY package.json package-lock.json* ./
+
+RUN npm ci --ignore-scripts
+
+COPY . .
+
+RUN npm run build
+
+CMD ["node", "build/index.js"]