feat(monad): enable kyber, openocean, lifi, relay aggregators

Monad mainnet (chain id 143) was wired into the registry without any
aggregator slugs, so `defi --chain monad swap` was returning
"unsupported chain" for every provider. Live API probes against each
aggregator on 2026-05-06 confirmed 4 of 5 already route Monad:

  - KyberSwap   — slug `monad`, docs explicitly list chain 143;
                  /monad/api/v1/routes accepts the chain segment
                  (HTTP 400 = token-level, not chain-level).
  - OpenOcean   — slug `monad`, present in the supported-chain list
                  alongside `monad_test` and `143`. /v4/monad/tokenList
                  returns mainnet tokens.
  - LI.FI       — chain 143 in /v1/chains as { key:"mon", coin:"MON" }.
  - Relay       — chain 143 in /chains, depositEnabled=true.
  - LiquidSwap  — HyperEVM-only by design; intentionally NOT enabled.

Smoke-tested all 4 against the dist build (MON -> USDC, --dry-run):

  provider     amount_in     amount_out          notes
  -----------  ------------  ------------------  ------------------------
  kyber        1e18 EEEE     32301 (6dp USDC)    real route + router
  openocean    1e18 native   33218               real route + router
  lifi         1e18 native   32220               real route + router
  relay        100e18 native 3225554             real route + router
                                                 (1e18 was below
                                                 AMOUNT_TOO_LOW gate)

All four return real tx calldata, confirming the chain is fully
routable. The "simulation_failed" result in dry-run is the executor's
expected output when the placeholder wallet has no balance — orthogonal
to chain support.

LI.FI / Relay use chainId numerically inside swap.ts (the slug value is
"auto" by the chains.toml convention documented in chain.ts:6); the
entries are still required so chain.test.ts and the future
slug-parity-style guards see Monad as supported.

Verified:
  - pnpm -C ts -r build       — synced ts/config -> packages/defi-cli/config
                                cleanly, dist rebuilt without warnings.
  - pnpm -C ts -r lint        — 3 packages, tsc --noEmit clean.
  - pnpm -C ts -r test        — 62 passing; 2 pre-existing failures in
                                qa/slippage.test.ts:108 reproduce on
                                origin/main with `git stash` and are
                                unrelated to chains.toml.
  - defi --chain monad status — 4 protocols listed (unchanged).
  - 4 swap dry-runs above.

Refs: aggregator-discovery probes captured in conversation
2026-05-06; SSOT chains.toml now matches every other chain that has
LI.FI/Relay enabled.

Author: Hiksang

ts/config/chains.toml

@@ -67,5 +67,10 @@ native_token = "MON"
 wrapped_native = "0x3bd359C1119dA7Da1D913D1C4D2B7c461115433A"
 multicall3 = "0xcA11bde05977b3631167028862bE2a173976CA11"
 
-# Monad: no aggregator support yet (early-stage mainnet)
+# Monad: 4 of 5 aggregators verified live against mainnet (chain id 143).
+# LiquidSwap is HyperEVM-only and intentionally omitted.
 [chain.monad.aggregators]
+kyber = "monad"
+openocean = "monad"
+lifi = "auto"
+relay = "auto"