Tilføj 30 MB grænse for hash-validering

- Spring hash-tjek over for filer over 30 MB for at spare tid ved store filer (f.eks. 65 GB)
- Filer over grænsen sammenlignes kun på størrelse
- Tilføjer logning når hash-tjek springes over

download_sharepoint.py

@@ -106,10 +106,20 @@ def quickxorhash(file_path):
     result = h.to_bytes(20, byteorder='little')
     return base64.b64encode(result).decode('ascii')
 
+# --- Integrity Thresholds ---
+HASH_THRESHOLD_BYTES = 30 * 1024 * 1024  # 30 MB
+
 def verify_integrity(local_path, remote_hash):
-    """Verifies file integrity using Microsoft QuickXorHash."""
+    """Verifies file integrity using Microsoft QuickXorHash.
+    Skips hash check for files larger than HASH_THRESHOLD_BYTES to save time."""
     if not remote_hash:
-        return True  # Intet hash fra remote; fald tilbage til størrelses-check
+        return True
+    
+    file_size = os.path.getsize(local_path)
+    if file_size > HASH_THRESHOLD_BYTES:
+        logger.info(f"Skipping hash check for large file (>30MB): {os.path.basename(local_path)} ({format_size(file_size)})")
+        return True
+        
     local_hash = quickxorhash(local_path)
     if local_hash != remote_hash:
         logger.warning(f"Hash mismatch for {local_path}: local={local_hash}, remote={remote_hash}")