feat: resolve bankruptcy in liquidation flow

[LukasDeco]

Summary

• enqueue users that are liquidatable or already bankrupt so the worker can process bankruptcy recovery paths
• add explicit perp and spot bankruptcy resolution transactions before normal liquidation attempts
• record bankruptcy resolution tx intents alongside existing liquidation tx intents for consistent tracking

Test plan

• cargo check --bin keeprs
• run liquidator against staging and verify resolve bankruptcy txs are emitted for bankrupt users
• confirm users with isolated bankrupt flags can be recovered via resolver path

Made with Cursor