Show stake + deck info on ban-pick tiles

**Status: needs triage** (enhancement)

## Summary
Ban-pick tiles are (deck, stake) combos. The stake is currently shown only as a sticker stamped on the card back (`decorate_tile` in `pvp_api/actions.lua`, rendered by the ban-tile engine in BalatroMultiplayerAPI `api/ban_pick.lua`); there's no readable label or deck info. Players have to recognize the sticker to know what stake a tile is.

## Proposal
Display the stake explicitly on/near each tile (name/text, not just the sticker) plus relevant deck info, so a player can evaluate a combo at a glance during the draft. The PvP mod feeds the tile data via `decorate_tile`; the tile layout lives in the API engine, so this may touch both.

## Open questions
- Confirm the sticker currently renders (it should) — this is about adding legible text, not fixing rendering.
- What "deck info" to surface — deck effect summary, or just name + stake.

Start with decorate_tile in pvp_api/actions.lua to see which stake and deck data the PvP mod provides, then inspect the ban-tile layout in BalatroMultiplayerAPI/api/ban_pick.lua. Confirm the existing sticker behavior and determine the agreed deck information before changing the tile presentation. Done means each ban-pick tile has readable stake text and the selected deck information at a glance.

Written by the indexing model from the issue text.