feat(admin): upload-material + delete-material endpoints with whitelist

app/admin.py

@@ -2,11 +2,12 @@ import csv
 import io
 from pathlib import Path
 
-from fastapi import APIRouter, Depends, Query
+from fastapi import APIRouter, Depends, File, Form, HTTPException, Query, UploadFile
 from fastapi.responses import Response
 
 from app.config import get_settings
 from app.db import list_leads, stats
+from app.frontend import ALLOWED_FILENAMES
 from app.security import require_admin
 
 router = APIRouter(prefix="/admin", tags=["admin"])
@@ -30,6 +31,43 @@ def admin_material_files(_user: str = Depends(require_admin)):
     return {"material_dir": str(material_dir), "exists": True, "files": files}
 
 
+@router.post("/upload-material")
+async def admin_upload_material(
+    target_name: str = Form(...),
+    file: UploadFile = File(...),
+    _user: str = Depends(require_admin),
+):
+    """Sube un archivo al volumen /app/material/ con un nombre de la whitelist."""
+    if target_name not in ALLOWED_FILENAMES:
+        raise HTTPException(
+            status_code=400,
+            detail=f"target_name must be one of {sorted(ALLOWED_FILENAMES)}",
+        )
+    material_dir = Path(get_settings().material_dir)
+    material_dir.mkdir(parents=True, exist_ok=True)
+    dest = material_dir / target_name
+    content = await file.read()
+    dest.write_bytes(content)
+    return {
+        "saved_as": str(dest),
+        "size_bytes": len(content),
+        "size_mb": round(len(content) / (1024 * 1024), 2),
+        "original_filename": file.filename,
+    }
+
+
+@router.delete("/material-files/{filename}")
+def admin_delete_material(filename: str, _user: str = Depends(require_admin)):
+    """Borra un archivo del volumen material/."""
+    if filename not in ALLOWED_FILENAMES:
+        raise HTTPException(status_code=400, detail="filename not in whitelist")
+    path = Path(get_settings().material_dir) / filename
+    if not path.exists():
+        raise HTTPException(status_code=404, detail="file not found")
+    path.unlink()
+    return {"deleted": filename}
+
+
 @router.get("/leads.json")
 def admin_leads_json(
     _user: str = Depends(require_admin),