E2E Test Selection:
The changes introduce two new hooks (beforePublish and publish) into the PredictController and wire them into the TransactionController's transaction lifecycle via the messenger system.

Key impacts:

1. SmokePredictions (primary): The PredictController now has beforePublish and publish hooks that integrate with the TransactionController's publish flow. When a Predict transaction is published, the PredictController:publish hook is called first - if it returns a transaction hash, it short-circuits the normal publish flow. This directly affects Polymarket prediction market transaction flows (opening positions, cashing out, claiming winnings).

2. SmokeConfirmations (required by SmokePredictions tag description): The beforePublish and publish hooks are integrated into the core TransactionController publish pipeline. Every transaction now calls these hooks. The beforePublish hook is called before signing, and publish is called in the publishHook before pay/smart transaction hooks. While the default implementations are pass-throughs, this is a change to the critical transaction path that warrants confirmation flow testing.

3. SmokeWalletPlatform (required by SmokePredictions tag description): Predictions is a section inside the Trending tab, so changes to Predictions views/flows affect Trending. The tag description explicitly states to select SmokeWalletPlatform when selecting SmokePredictions.

Risk factors:

• The publishHook now calls PredictController:publish first and short-circuits if a hash is returned - this is a new code path in the critical transaction publish flow
• The messenger wiring adds new action registrations to the TransactionControllerInitMessenger
• Default implementations are pass-throughs (low risk for non-Predict transactions)
• Changes are well-tested with unit tests covering the new behavior

Performance Test Selection:
The new beforePublish and publish hooks are simple pass-through implementations by default (returning true and { transactionHash: undefined } respectively). While they add async calls to the transaction publish flow, the overhead is negligible for non-Predict transactions. No performance tests are warranted for these changes.