[BIP-912] Deprecate PoL on CoWAMM Positions (BIP-666)

PR with Payload

https://github.com/BalancerMaxis/multisig-ops/pull/2697

Summary

This proposal seeks to deprecate the CoWAMM positions currently held by the Balancer Treasury, which were originally established under BIP-666. Given the current low utilization of these pools, the Treasury aims to exit these positions and hand over the underlying assets to Karpatkey (KPK) for more efficient management under their existing mandate.

Background

In BIP-666, the Balancer DAO provided protocol-owned liquidity (PoL) to two specific CoWAMM pools as part of a product launch initiative. The primary goal was to facilitate live testing and bootstrap liquidity for the new pool type.

The positions are located in the following pools:

• WETH/USDC CoWAMM: 0xf08d4dea369c456d26a3168ff0024b904f2d8b91
• WETH/BAL CoWAMM: 0xf8f5b88328dff3d19e5f4f11a9700293ac8f638f

Motivation

While these pools served their purpose during the initial launch and testing phase, they are currently idle, seeing minimal trading volume and organic action due to the nature of the AMM in tis initial iteration. Keeping DAO capital locked in these underutilized positions is no longer the most productive use of resources. This initiative could be revisited as the product develops new AMM solutions in the future.

The total value of these positions, excluding the BAL portion (as of today), is approximately $275k, consisting of:

• ~$160k in WETH
• ~$115k in USDC

By deprecating these positions, the Treasury Managers (@kpk) can redeploy this capital into higher-yielding strategies, retaining the BAL within the Treasury to better align with long-term protocol health.

Specification

1. Withdraw Liquidity: The Treasury (via Treasury Council multisig) will exit proportionally from both pools listed above, depositing all tokens to the Treasury; 2. BAL Tokens: All BAL tokens recovered from the withdrawal shall be returned to and held directly by the Balancer Treasury; 3. WETH & USDC: The remaining assets shall be at @kpk) disposal for allocation, given these are already assets under management mandate. Note: @maxyz.xyz to create a technical payload for execution