## Context Replace legacy FeeRouter five-sink CL8Y model with TimeArena DOUB routing. Parent epic: #238. ## Relevant files - `contracts/src/FeeRouter.sol` - Sinks: `DoubLPIncentives.sol`, `EcosystemTreasury.sol`, `CL8YProtocolTreasury.sol`, `PodiumPool.sol` - `docs/onchain/fee-routing-and-governance.md` - `frontend/src/pages/TimeCurveProtocolPage.tsx` (fee-sink footer) ## Acceptance criteria - [ ] v2 buy path routes DOUB per spec (40% live pools + 30% seed + 30% admin vault) without legacy 30/40/20/0/10 CL8Y table - [ ] `PodiumPool` redesigned or replaced with per-podium DOUB vaults (4× current + 4× seed + 1× admin) ## Verification checklist - [ ] Forge test: buy N DOUB → measured vault balances match bps - [ ] No CL8Y burn sink in v2 buy path