[study] (2h) Rebalance internal swap — slippage bounds, sandwich-resistance

[ozpool]

Goal

Understand the rebalance step most exposed to sandwich MEV.

Time estimate

2h (single focused session)

Prerequisites

• [study] (2h) Price impact + slippage math — swap impact in CL pools #92 (F21) — Price impact + slippage math — swap impact in CL pools
• [study] (2h) Rebalance flow overview — remove-all → swap → redeploy in one unlock #109 (P10) — Rebalance flow overview — remove-all → swap → redeploy in one unlock

Study plan (in order)

1. [25 min] PRISM_PRD_v1.0.html §Day 3 rebalance logic — internal swap
2. [25 min] Slippage bound derivation: based on external price (oracle) or last-known fair mid
3. [25 min] Abort semantics: rebalance reverts cleanly if slippage breached → keeper absorbs gas loss; better than sandwiched
4. [25 min] Sandwich-resistance: attacker must sandwich across an unlock — doable only with flash-loan; slippage bound limits damage
5. [20 min] Skip condition: if current ratio already within δ of target, no swap needed

Total: 120 min

After studying, you can

• Explain slippage-bound derivation
• Describe abort behavior on slippage breach
• List sandwich-resistance properties
• Articulate swap-skip conditions

Tradeoff prompt for the architectural review

When should the internal swap be skipped entirely?

References

• PRISM_PRD_v1.0.html §Day 3
• PRISM CLAUDE.md Risk Posture