Tokenomics

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// Fee calculation in stake_vote instruction
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let creator_fee = amount
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    .checked_mul(market.creator_fee_bps as u64)
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    .unwrap()
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    .checked_div(10000)
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    .unwrap();
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let stake_after_fee = amount.checked_sub(creator_fee).unwrap();
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// Transfer fee to treasury
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transfer(
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    CpiContext::new(/* ... */),
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    creator_fee,
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)?;
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// Transfer stake to reward pool
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transfer(
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    CpiContext::new(/* ... */),
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    stake_after_fee,
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)?;

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// Reward calculation in claim_rewards instruction
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let winning_pool = if prediction.winning_side == Some(VoteSide::Valid) {
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    prediction.valid_stake_total
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} else {
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    prediction.fud_stake_total
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};
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let losing_pool = if prediction.winning_side == Some(VoteSide::Valid) {
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    prediction.fud_stake_total
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} else {
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    prediction.valid_stake_total
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};
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// Winner's reward = their stake + proportional share of losing pool
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let user_reward = user_stake.amount
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    .checked_add(
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        losing_pool
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            .checked_mul(user_stake.amount)
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            .unwrap()
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            .checked_div(winning_pool)
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            .unwrap()
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    )
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    .unwrap();