Half the fee stream pays 0xZAPS stakers in WETH, like campaign 1.
- Stake 0xZAPS through the fixed window; withdraw principal at any time — reward failures can never block an exit.
- Harvest is permissionless and streams only to the fixed end; no harvest can extend or reset the timer.
- After the window, finalize returns the 50 fee shares to the sponsor and claims stay open until the deadline.