feat: add Crush MCP server configurations and validate multiple MCP servers

- Add crush.json with comprehensive MCP configurations for Crush AI assistant
- Configure stdio-based MCPs: penpot, context7, docker, drawio, redmine
- Configure HTTP-based MCP: nextcloud (port 8083 with SSE endpoint)
- Fix mcp-redmine Dockerfile with correct python module entrypoint
- Fix nextcloud-mcp Dockerfile to handle .dockerignore blocking observability
- Fix drawio-mcp Dockerfile to use pnpm and correct build directory
- Update docker-compose.yml with proper MCP server configurations
- Add environment variable configuration for MCPs requiring external services
- Create MCP validation script to test servers with protocol messages
- Update STATUS.md with confirmed working MCP servers and their requirements
- Validate: penpot, context7, docker, drawio, redmine, nextcloud (HTTP)
- Document required env vars for ghost, imap, proxmox, penpot MCPs
- Configure Crush to use both stdio (docker run) and HTTP endpoints

crush.json

@@ -27,9 +27,59 @@
       "command": "docker",
       "args": ["run", "-i", "--rm", "kneldevstack-aimiddleware-bitwarden-mcp"]
     },
+    "context7": {
+      "command": "docker",
+      "args": ["run", "-i", "--rm", "kneldevstack-aimiddleware-context7-mcp"]
+    },
+    "docker": {
+      "command": "docker",
+      "args": ["run", "-i", "--rm", "kneldevstack-aimiddleware-docker-mcp"]
+    },
+    "drawio": {
+      "command": "docker",
+      "args": ["run", "-i", "--rm", "kneldevstack-aimiddleware-drawio-mcp"]
+    },
     "ghost": {
       "command": "docker",
       "args": ["run", "-i", "--rm", "kneldevstack-aimiddleware-ghost-mcp"]
+    },
+    "imap": {
+      "command": "docker",
+      "args": ["run", "-i", "--rm", "kneldevstack-aimiddleware-imap-mcp"],
+      "env": {
+        "IMAP_HOST": "imap.example.com",
+        "IMAP_USERNAME": "user@example.com",
+        "IMAP_PASSWORD": "your-password-here"
+      }
+    },
+    "nextcloud": {
+      "url": "http://localhost:8083/sse"
+    },
+    "penpot": {
+      "command": "docker",
+      "args": ["run", "-i", "--rm", "kneldevstack-aimiddleware-penpot-mcp"],
+      "env": {
+        "PENPOT_URL": "https://design.penpot.app",
+        "PENPOT_TOKEN": "your-token-here"
+      }
+    },
+    "proxmox": {
+      "command": "docker",
+      "args": ["run", "-i", "--rm", "kneldevstack-aimiddleware-proxmox-mcp"],
+      "env": {
+        "PROXMOX_HOST": "https://proxmox.example.com",
+        "PROXMOX_USER": "root@pam",
+        "PROXMOX_TOKEN": "your-token-here",
+        "PROXMOX_NODE": "pve"
+      }
+    },
+    "redmine": {
+      "command": "docker",
+      "args": ["run", "-i", "--rm", "kneldevstack-aimiddleware-mcp-redmine"],
+      "env": {
+        "REDMINE_URL": "https://redmine.example.com",
+        "REDMINE_API_KEY": "your-api-key-here"
+      }
     }
   }
 }