- Replace pool.observe() TWAP price source with current pool tick (pool.slot0()) sampled once per recenter
- Remove _getTWAPOrFallback() and TWAPFallback event (added by PR #575)
- _scrapePositions now takes int24 currentTick instead of uint256 prevTimestamp; price computed via _priceAtTick before the burn loop
- Volume weighting (ethFee * 100) is unchanged — fees proxy swap volume over the recenter interval
- Direction fix from #566 (shouldRecordVWAP only on sell events) is preserved
- Remove test_twapReflectsAveragePriceNotJustLastSwap (tested reverted TWAP behaviour)
- ORACLE_CARDINALITY / increaseObservationCardinalityNext retained for _isPriceStable()
- All 188 tests pass
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Add lastRecenterTimestamp to track recenter interval for TWAP
- Increase pool observation cardinality to 100 in constructor
- In _scrapePositions, use pool.observe([elapsed, 0]) to get TWAP tick
over the full interval between recenters; falls back to anchor midpoint
when elapsed==0 or pool.observe() reverts (insufficient history)
- Add test_twapReflectsAveragePriceNotJustLastSwap: verifies TWAP-based
VWAP reflects the average price across the recenter interval, not just
the last-swap anchor snapshot
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Extract VWAP tracking logic into reusable VWAPTracker contract
- Fix critical compression bug that erased historical price memory
- Replace dangerous 10^35x compression with limited 1000x max compression
- Add comprehensive dormant whale protection testing
- Preserve "eternal memory" to prevent manipulation by patient whales
- Add double-overflow analysis showing 1000x limit is mathematically safe
- Maintain backwards compatibility with existing LiquidityManager
Security Impact:
- Prevents dormant whale attacks where traders accumulate early then exploit
compressed historical data to extract value at inflated prices
- VWAP now maintains historical significance even after compression
- Floor position calculations remain anchored to true price history
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
