Feature Request: Weighted raffle — assign probability multipliers to participants

[Spaccesi]

Summary

All participants currently have equal odds. A weighted raffle would allow organizers to give certain participants more chances (e.g., VIPs, sponsors, or loyal customers).

Possible Solution

• Add an optional weight field per participant (default: 1).
• Display weight as Name (x5) in the list.
• The draw engine should treat a participant with weight N as N entries.

Acceptance Criteria

• Each participant can optionally have a weight/multiplier assigned.
• Weight is visually indicated next to the participant's name.
• The draw respects weights proportionally.
• Weights are included in import/export.