feat: Introduce bot-descarga service for PDF downloads and remote bot control. Add Docker configuration, environment variables, and a GUI for agent management. Enhance README with bot details and installation instructions.

services/bot_descarga/infrastructure/auth.py

@@ -0,0 +1,20 @@
+from __future__ import annotations
+
+import os
+from typing import Optional
+
+from fastapi import Header, HTTPException
+
+
+def get_api_token() -> str:
+    return os.getenv("BOT_API_TOKEN", "dev-token-change-me")
+
+
+def require_bearer(authorization: Optional[str] = Header(default=None)) -> str:
+    expected = get_api_token()
+    if not authorization or not authorization.lower().startswith("bearer "):
+        raise HTTPException(status_code=401, detail="Authorization Bearer requerido")
+    token = authorization.split(" ", 1)[1].strip()
+    if token != expected:
+        raise HTTPException(status_code=401, detail="Token inválido")
+    return token