fix(tonco-dex): pass swap msg.body to sendTON and use correct pTON wallet

[konard]

Problem

Fixes two critical bugs in tonco_execute_swap reported in issue #137.

P1 — Swap body dropped (critical)

sendTON(msg.to, value, **undefined**) discarded the entire Cell payload built by PoolMessageManager.createSwapExactInMessage. The router/pTON wallet received a plain TON transfer with no swap instruction, so no swap ever executed on-chain.

Root cause: msg from the SDK is { to, value, body: Cell }. The third argument to sendTON was hardcoded as undefined instead of msg.body.

Fix: Pass msg.body as the third argument to sendTON.

P2 — Wrong pTON wallet when TON is jetton1 (routing failure)

When a pool stores TON as jetton1 (i.e. zeroToOne = false), tokenIn is j1Data — but the code unconditionally read the pTON wallet from j0Data.wallet / j0Data.walletV1_5. This fed the wrong wallet address to createSwapExactInMessage, causing incorrect routing or transaction failure.

Root cause: The isTonIn branch hardcoded j0Data instead of using tokenIn (the variable that already resolves to the correct side).

Fix: Use tokenIn.wallet / tokenIn.walletV1_5 — this is always the TON-side token regardless of pool ordering.

Changes

• plugins/tonco-dex/index.js — two one-line fixes in tonco_execute_swap
• plugins/tonco-dex/tests/index.test.js — two new test suites covering the fixes

How to reproduce

Both issues can be observed by reading plugins/tonco-dex/index.js:

// P1 — before fix
await _sdk.ton.sendTON(msg.to.toString(), value, undefined);   // body silently dropped

// P2 — before fix (isTonIn branch)
userJettonInWallet = Address.parse(j0Data.wallet);  // wrong when TON is jetton1

Tests

• P1 test: captures sendTON arguments via a mock and asserts the body is not undefined/null when the swap message is built.
• P2 test: reads the plugin source and asserts the isTonIn branch references tokenIn.wallet, not j0Data.wallet.

All 332 tests pass locally (npm test), 0 lint errors.

🤖 Generated with Claude Code

Fixes #137

[konard]

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