[VPD-1314] Configure PrimeV2 on BSC

[Debugger022]

Summary

• Add VIP-675 (bsctestnet) bringing the new PrimeV2 and PrimeLeaderboard contracts live and decommissioning the legacy Prime.
• Contracts deployed via venus-protocol PR #677; this VIP performs the on-chain governance setup the deploy scripts intentionally leave to governance.
• Includes a fork simulation covering the full lifecycle and post-state.

Changes

VIP (vips/vip-675/bsctestnet.ts)

• Accept ownership of PrimeV2 + PrimeLeaderboard (deploy initiates transfer to NormalTimelock; acceptance is governance).
• Grant ACM permissions: config functions to NormalTimelock; epoch ops (issue/issueBatch/burn/burnBatch, setMintThreshold, initializeStakers, finalizeInitialization) to NormalTimelock + Guardian; pause/unpause to all three timelocks.
• Wire PrimeV2 ↔ PrimeLeaderboard (ACM-gated, not done at deploy on live nets).
• Repoint existing PrimeLiquidityProvider at PrimeV2 (setPrimeToken).
• Add Core pool markets (vUSDT, vUSDC, vBTC, vETH) mirroring legacy supply/borrow multipliers.
• Open permissionless mint window via setMintThreshold (1 XVS effective stake, no deadline).
• Decommission legacy Prime via togglePause() (note: setLimit(0,0) reverts InvalidLimit — tokens already minted).
• Tiers (30/60/90d → 1.3/1.6/2.0x) and tokenLimit (500) come from initializers; staker seeding done off-chain by Guardian.

Simulation (simulations/vip-675/bsctestnet.ts)

• Pre-state, command execution, proposal lifecycle, post-state (ownership, wiring, PLP, tokenLimit, mint window, Guardian ACM roles, legacy paused, markets), and event assertions.

Test plan

• npx hardhat test simulations/vip-675/bsctestnet.ts --fork bsctestnet → 62 passing (verified at block 110244560).
• yarn tsc --noEmit, npx eslint, npx prettier --check on both files → clean.