fix: use Token-2022 positions for full rent recovery on close for Orca

[mlguys]

Summary

Fixes #584 — Orca CLMM positions now use Token-2022 instructions instead of Metaplex, enabling full rent recovery when positions are closed.

Problem: The old Metaplex-based openPositionWithMetadataIx creates a mint account that cannot be closed. On position close, only the position data PDA and token ATA rent could be reclaimed (~0.006 SOL), but the mint account rent (~0.004 SOL) was permanently locked. This meant ~$1.89 was spent opening a position but only ~$0.74 was returned on close.

Solution: Switch to Token-2022's openPositionWithTokenExtensionsIx which creates mints with MintCloseAuthority extension, making all 3 position accounts (mint, PDA, ATA) fully reclaimable on close.

Changes

openPosition.ts

• Replaced openPositionWithMetadataIx (Metaplex) with openPositionWithTokenExtensionsIx (Token-2022)
• Position token account now derives with TOKEN_2022_PROGRAM_ID
• Rent calculation uses direct getBalance() queries on the 3 position accounts instead of unreliable wallet SOL change extraction

executeSwap.ts

• Replaced WhirlpoolIx.swapIx with WhirlpoolIx.swapV2Ix for Token-2022 compatibility

closePosition.ts

• Rent refund calculation uses direct getBalance() queries on position accounts before the close TX (while accounts still exist)
• Fee amounts use collectFeesQuote from on-chain position data instead of post-TX wallet SOL change extraction
• Already had closePositionWithTokenExtensionsIx (backward compatible with legacy via isToken2022 check)

Tests

• Updated openPosition.test.ts: mock connection.getBalance instead of extractBalanceChangesAndFee
• Updated executeSwap.test.ts: mock swapV2Ix instead of swapIx

[fengtality]

Tested and reviewed code, LGTM

[rapcmia]

• Setup on source ok
• Use PYUSD/USDC, pool 9tXiuRRw7kbejLhZXtxDxYs2REe43uH2e7k1kocgdM9B
• ./connectors/orca/clmm routes ✅
  • /connectors/orca/clmm/{quote-swap, execute-swap}
  • /connectors/orca/clmm/{pool-info, quote-position, open-position, add-liquidity, position-info, positions-owned, collect-fees, close-position}
• ./trading/clmm routes ✅
  • /trading/swap/{quote, execute}
  • /trading/clmm/{pool-info, open, add, remove, collect-fees, close}
    • /trading/clmm/{positions-owned, quote-position}

Test logs: 02162026.zip

[rapcmia]

Merged to development and part of release version 2.13