test(shutter): validate proposal 178 brainbot grant

[blockfulintern]

Proposal summary

Shutter proposal 178 transfers a one-time grant of 107,000 USDC from the Shutter treasury to brainbot gmbh at 0xb75E2fB01521Bd7b6369F831414840A54a3C7234.

Proposal: https://anticapture.com/shu/governance/proposal/178
Submission tx: https://etherscan.io/tx/0x90e266d5e1b1193a275473847f0ad57e597b3798cd3c0784481033ec06d787a8
Forum spec: https://shutternetwork.discourse.group/t/provide-a-grant-to-brainbot-gmbh-july-2026/895

Calldata verification

PASS — one executable call:

Call	Target	Selector	Value	Decoded action
1	USDC 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48	IERC20.transfer.selector (0xa9059cbb)	0	Transfer 107,000,000,000 USDC base units to brainbot gmbh

The test derives calldata manually from IERC20.transfer.selector, named address constants, and GRANT_AMOUNT = 107_000 * 10 ** 6. It matches the live proposal target, value, and calldata exactly.

Assertion results

Before execution:

• proposal 178 is the latest submitted proposal;
• proposal state is ACTIVE at block 25,522,491;
• treasury and recipient USDC balances are snapshotted;
• treasury balance is sufficient to fund the grant.

After execution:

• treasury USDC balance decreases by exactly 107,000 USDC;
• recipient USDC balance increases by exactly 107,000 USDC;
• shared Shutter harness advances through the proposal's configured Azorius timelock and asserts EXECUTABLE before execution.

Findings

• CRITICAL: None.
• IMPORTANT: None.
• INFO: The shared Shutter test harness attempted execution immediately after voting. This PR advances through the proposal-specific Azorius timelock and verifies the executable state; the full Shutter suite remains green.

Recommendation

APPROVE

Verification

git clone https://github.com/blockful/dao-proposals.git
cd dao-proposals
git checkout e31c5fb
MAINNET_RPC_URL=<ethereum-archive-rpc> forge test --match-path 'src/shutter/proposals/178-brainbot-grant/*' -vv

Results:

• Proposal-specific suite: 2 passed, 0 failed
• Full Shutter suite: 4 passed, 0 failed