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

config.py

@@ -0,0 +1,68 @@
+from __future__ import annotations
+
+from dataclasses import dataclass
+from pathlib import Path
+
+import yaml
+
+
+@dataclass(frozen=True)
+class MCPBundle:
+    root: Path
+    name: str
+    port: int
+
+
+@dataclass(frozen=True)
+class RepoDoc:
+    name: str
+    description: str | None
+    lib: str | None
+    api: str | None
+    wiki: str | None
+    mcp_bundle: str | None   # source-relative path in the repo (collect use)
+    mcp_server: str | None   # MCP server / namespace name
+    mcp_port: int | None
+
+
+@dataclass(frozen=True)
+class ServiceConfig:
+    name: str
+    html_port: int
+    health_port: int
+    repos: tuple[RepoDoc, ...]
+
+    @property
+    def mcp_servers(self) -> dict[str, MCPBundle]:
+        """Return only repos that expose an MCP server."""
+        return {
+            r.name: MCPBundle(root=Path("mcp") / r.name, name=r.mcp_server, port=r.mcp_port)
+            for r in self.repos
+            if r.mcp_port is not None
+        }
+
+
+def load_config(path: Path | str = "config.yml") -> ServiceConfig:
+    p = Path(path)
+    data = yaml.safe_load(p.read_text(encoding="utf-8"))
+    service = data.get("service") or {}
+    repos: list[RepoDoc] = []
+    for entry in data.get("repos", []):
+        docs = entry.get("docs") or {}
+        mcp = docs.get("mcp")
+        repos.append(RepoDoc(
+            name=entry["name"],
+            description=entry.get("description"),
+            lib=docs.get("lib"),
+            api=docs.get("api"),
+            wiki=docs.get("wiki"),
+            mcp_bundle=mcp["bundle"] if mcp else None,
+            mcp_server=mcp["server"] if mcp else None,
+            mcp_port=mcp["port"] if mcp else None,
+        ))
+    return ServiceConfig(
+        name=service.get("name", "aetos-docs"),
+        html_port=service.get("html_port", 9000),
+        health_port=service.get("health_port", 8000),
+        repos=tuple(repos),
+    )