tide-dca

    pub pool: Account<'info, Pool>,     #[account(        mut,        seeds = [Window::SEED_PREFIX, pool.key().as_ref(), &window.window_number.to_le_bytes()],        bump = window.bump,    )]    pub window: Account<'info, Window>,} pub fn handler(ctx: Context<TriggerAggregate>) -> Result<()> {    let window = &mut ctx.accounts.window;    let clock = Clock::get()?;     require!(        clock.unix_timestamp >= window.end_ts,        TideError::WindowNotExpired    );    require!(window.status == 0, TideError::AlreadyAggregated);     // Check pool size threshold    require!(        window.total_committed_usdc >= ctx.accounts.pool.min_pool_size_usdc,        TideError::PoolTooSmall

1. Line 17 seeds = [Window::SEED_PREFIX, pool.key().as_ref(), &window.window_number.to_le_bytes()],: Declares the PDA seeds. Anchor re-derives the address and rejects the account if it doesn't match.
2. Line 18 bump = window.bump,: Uses the bump seed, the extra byte that pushes the derived address off the ed25519 curve.
3. Line 25 let clock = Clock::get()?;: Reads on-chain time from the Clock sysvar.
4. Line 27 require!(: An explicit validation that aborts the instruction with an error.

#[derive(Accounts)]#[instruction(target_mint: Pubkey)]pub struct InitPool<'info> {    #[account(mut)]    pub authority: Signer<'info>,     pub input_mint: Account<'info, Mint>,     #[account(        init,        payer = authority,        space = Pool::SPACE,        seeds = [            Pool::SEED_PREFIX,            input_mint.key().as_ref(),            target_mint.as_ref(),        ],        bump,    )]    pub pool: Account<'info, Pool>,     pub system_program: Program<'info, System>,}

1. Line 17 pub authority: Signer<'info>,: Requires this account to have signed the transaction.
2. Line 22 init,: Creates and pays for a new account. Space and payer must be specified.
3. Line 25 seeds = [: Declares the PDA seeds. Anchor re-derives the address and rejects the account if it doesn't match.
4. Line 30 bump,: Uses the bump seed, the extra byte that pushes the derived address off the ed25519 curve.

        seeds = [Window::SEED_PREFIX, pool.key().as_ref(), &window.window_number.to_le_bytes()],        bump = window.bump,        constraint = window.pool == pool.key(),    )]    pub window: Account<'info, Window>,} pub fn handler(ctx: Context<MarkWindowFailed>) -> Result<()> {    let window = &mut ctx.accounts.window;     // Case 1: Aggregating window — standard escape hatch.    // Case 2: Open + expired + empty — unstick lifecycle when no commits    //         arrived. Empty check is critical: must NEVER let authority    //         skip a window with active commits, that'd freeze user funds.    let is_aggregating = window.status == 1;    let clock = Clock::get()?;    let is_open_expired_empty = window.status == 0        && clock.unix_timestamp >= window.end_ts        && window.intent_count == 0        && window.total_committed_usdc == 0;     require!(        is_aggregating || is_open_expired_empty,        TideError::AggregateNotReady

1. Line 37 seeds = [Window::SEED_PREFIX, pool.key().as_ref(), &window.window_number.to_le_bytes()],: Declares the PDA seeds. Anchor re-derives the address and rejects the account if it doesn't match.
2. Line 38 bump = window.bump,: Uses the bump seed, the extra byte that pushes the derived address off the ed25519 curve.
3. Line 52 let clock = Clock::get()?;: Reads on-chain time from the Clock sysvar.
4. Line 58 require!(: An explicit validation that aborts the instruction with an error.

    pub owner: Signer<'info>,     pub pool: Account<'info, Pool>,     #[account(        init,        payer = owner,        space = DcaPosition::SPACE,        seeds = [            DcaPosition::SEED_PREFIX,            owner.key().as_ref(),            pool.key().as_ref(),        ],        bump,    )]    pub position: Account<'info, DcaPosition>,     pub system_program: Program<'info, System>,} pub fn handler(    ctx: Context<SetupDcaPosition>,    amount_per_window: u64,    max_slippage_bps: u16,

1. Line 13 pub owner: Signer<'info>,: Requires this account to have signed the transaction.
2. Line 18 init,: Creates and pays for a new account. Space and payer must be specified.
3. Line 21 seeds = [: Declares the PDA seeds. Anchor re-derives the address and rejects the account if it doesn't match.
4. Line 26 bump,: Uses the bump seed, the extra byte that pushes the derived address off the ed25519 curve.