Fix get_pdf: return bytes Response (avoid hanging stream)

backend/api.py

@@ -1,5 +1,7 @@
 from __future__ import annotations
 
+from fastapi.responses import Response
+
 
 import os
 SENDCFG_FAST_OK=(os.getenv("SENDCFG_FAST_OK","0")=="1")
@@ -96,18 +98,13 @@ def health():
 
 @app.get("/api/pdf/{pdf_id}")
 def get_pdf(pdf_id: str):
-    path = UPLOADS_DIR / f"{pdf_id}.pdf"
-    if not path.exists():
-        raise HTTPException(status_code=404, detail="PDF not found")
-
-    name_path = UPLOADS_DIR / f"{pdf_id}.name.txt"
-    pdf_name = name_path.read_text(encoding="utf-8").strip() if name_path.exists() else f"{pdf_id}.pdf"
-
-    resp = FileResponse(path, media_type="application/pdf", filename=pdf_name)
-    resp.headers["X-PDF-Name"] = pdf_name
-    return resp
+    pdf_path = _pdf_path(pdf_id)
+    try:
+        b = pdf_path.read_bytes()
+    except FileNotFoundError:
+        raise HTTPException(status_code=404, detail="pdf_not_found")
+    return Response(content=b, media_type="application/pdf")
 
-@app.post("/api/pdf/{pdf_id}")
 async def put_pdf(pdf_id: str, file: UploadFile = File(...), pdf_name: str = Form("")):
     UPLOADS_DIR.mkdir(parents=True, exist_ok=True)
     data = await file.read()