R-1292: qBittorrent's 50 % rule owns the NORMAL limit only (up_limit through app/preferences), never the current speed mode's slot. Test with the alternative mode on, red-proved. Commit only.

controller/internal/upwatch/linehold.go

@@ -338,6 +338,17 @@ func (q *QBittorrent) WriteLimit(ctx context.Context, l HeldLimit) (HeldLimit, e
 	return q.readSlot(ctx, h, l.Alt)
 }
 
+// NormalLimit / SetNormalLimit are the 50 % rule's side (R-1292): the NORMAL slot (`up_limit`) whatever the mode.
+func (q *QBittorrent) NormalLimit(ctx context.Context) (int64, error) {
+	l, err := q.ReadLimitLike(ctx, HeldLimit{Alt: false})
+	return l.Bytes, err
+}
+
+func (q *QBittorrent) SetNormalLimit(ctx context.Context, bytesPerSec int64) (int64, error) {
+	l, err := q.WriteLimit(ctx, HeldLimit{Bytes: bytesPerSec, Alt: false})
+	return l.Bytes, err
+}
+
 // HoldValue: 1 KiB/s in the slot that applied when the hold began.
 func (q *QBittorrent) HoldValue(prev HeldLimit) HeldLimit {
 	return HeldLimit{Bytes: 1024, Alt: prev.Alt}