fix: support token query param for file download endpoints

Browser-initiated downloads (window.open) cannot set Authorization
headers. Accept ?token= query parameter as fallback on the report
download and coding-template endpoints.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/app/api/cases.py

@@ -100,16 +100,35 @@ def list_pending_coding(
 
 @router.get("/coding-template")
 def download_coding_template(
+    request: Request,
+    token: Optional[str] = Query(None),
     jahr: Optional[int] = Query(None),
     fallgruppe: Optional[str] = Query(None),
     db: Session = Depends(get_db),
-    user: User = Depends(get_current_user),
 ):
     """Download an Excel template for ICD coding.
 
-    The template contains all cases that still need ICD codes, with an
-    empty ICD column for DAK users to fill in.
+    Supports both ``Authorization: Bearer`` header and ``?token=`` query
+    parameter for direct browser downloads.
     """
+    from app.core.security import decode_access_token
+    from jose import JWTError
+
+    raw_token = token
+    if not raw_token:
+        auth = request.headers.get("authorization", "")
+        if auth.lower().startswith("bearer "):
+            raw_token = auth[7:]
+    if not raw_token:
+        raise HTTPException(status.HTTP_401_UNAUTHORIZED, "Not authenticated")
+    try:
+        payload = decode_access_token(raw_token)
+        user_id = int(payload["sub"])
+    except (JWTError, KeyError, ValueError):
+        raise HTTPException(status.HTTP_401_UNAUTHORIZED, "Invalid token")
+    user = db.query(User).filter(User.id == user_id, User.is_active == True).first()  # noqa: E712
+    if not user:
+        raise HTTPException(status.HTTP_401_UNAUTHORIZED, "User not found")
     xlsx_bytes = generate_coding_template(db, jahr=jahr, fallgruppe=fallgruppe)
 
     from io import BytesIO

backend/app/api/reports.py

@@ -5,7 +5,7 @@ import os
 from datetime import date
 from io import BytesIO
 
-from fastapi import APIRouter, Depends, HTTPException, Query
+from fastapi import APIRouter, Depends, HTTPException, Query, Request, status
 from fastapi.responses import StreamingResponse
 from sqlalchemy.orm import Session
 
@@ -141,13 +141,37 @@ def generate_report(
 @router.get("/download/{report_id}")
 def download_report(
     report_id: int,
+    request: Request,
+    token: str | None = Query(None),
     db: Session = Depends(get_db),
-    user: User = Depends(get_current_user),
 ):
     """Download a previously generated Berichtswesen Excel file.
 
-    Accessible to both admin and dak_mitarbeiter users.
+    Supports both ``Authorization: Bearer`` header and ``?token=`` query
+    parameter so the browser can open the URL directly in a new tab.
     """
+    from app.core.security import decode_access_token
+    from jose import JWTError
+
+    # Resolve token from header or query param
+    raw_token = token
+    if not raw_token:
+        auth = request.headers.get("authorization", "")
+        if auth.lower().startswith("bearer "):
+            raw_token = auth[7:]
+
+    if not raw_token:
+        raise HTTPException(status.HTTP_401_UNAUTHORIZED, "Not authenticated")
+
+    try:
+        payload = decode_access_token(raw_token)
+        user_id = int(payload["sub"])
+    except (JWTError, KeyError, ValueError):
+        raise HTTPException(status.HTTP_401_UNAUTHORIZED, "Invalid token")
+
+    user = db.query(User).filter(User.id == user_id, User.is_active == True).first()  # noqa: E712
+    if not user:
+        raise HTTPException(status.HTTP_401_UNAUTHORIZED, "User not found")
     report = db.query(WeeklyReport).filter(WeeklyReport.id == report_id).first()
     if not report or not report.report_file_path:
         raise HTTPException(404, "Report not found")