feat: unify docs portal and MCP servers into one config-driven service

- add config.yml as single source of truth for collected repos/categories
- add collect.py CLI to pull lib/api/wiki site builds and mcp bundles from
  source repos and regenerate nginx.conf + _index/index.html
- port mcp runtime (main.py/core.py/config.py): nginx + health + FastMCP
  servers started from config.yml
- docker: python:3.13-slim + nginx, expose 8000-8006 + 9000 (html portal)
- drone: publish html (6007:9000) and MCP ports 8000-8006
- move mongo-ops docs to wiki/, add auth-server (api) and hexa (lib)
- refresh lib site builds (lib/ prefix) and collect mcp bundles

nginx.conf

@@ -1,18 +1,14 @@
 server {
-    listen 80;
-    server_name _;  # default catch-all
+    listen 9000;
+    server_name _;
 
-    # Root for the main landing page
     root /usr/share/nginx/html;
+    index index.html api/index.html;
 
-    # Serve the index page by default
-    index index.html;
-
-    # Optional: serve static assets (CSS, JS, images)
     location / {
         try_files $uri $uri/ /index.html;
     }
 
     access_log /var/log/nginx/access.log;
-    error_log /var/log/nginx/error.log;
+    error_log  /var/log/nginx/error.log;
 }