Match results not recording on-chain (mainnet)

[ScavieFae]

Problem

Matches were playing and prediction pools being created, but zero MatchRecorded events on mainnet initially.

Root Cause

1. Player 1 wallet had zero MON — couldn't submit transactions
2. Players needed mainnet wallet config (chain 143, rpc.monad.xyz)

Resolution

Arena now handles `recordMatch()` submission server-side. 3 matches confirmed onchain after fix. Pipeline is working.

[ScavieFae]

Fixed in two commits on dev:

1. Arena now submits recordMatch() (3526d05)
When both player signatures arrive at the arena, it calls recordMatch() using its own wallet (ARENA_PRIVATE_KEY). Players still sign off-chain (free) but the arena pays gas. New env var: MATCH_PROOF — set to the MatchProof contract address.

2. Config flipped to mainnet

• ~/.nojohns/config.toml → chain_id=143, rpc.monad.xyz, mainnet contract addresses
• ~/.nojohns/arena.env → mainnet RPC, MATCH_PROOF, PREDICTION_POOL, REPUTATION_REGISTRY all set

3. Player wallet funded
Sent 5 MON from arena wallet to 0x1F36B4c388CA19Ddb5b90DcF6E8f8309652Ab3dE on mainnet. (Player signs off-chain so doesn't strictly need gas anymore, but it's there if needed.)

Railway needs these env vars for match recording to work:

MATCH_PROOF=0x1CC748475F1F666017771FB49131708446B9f3DF
MONAD_RPC_URL=https://rpc.monad.xyz
MONAD_CHAIN_ID=143

These are in addition to the existing ARENA_PRIVATE_KEY and PREDICTION_POOL.

ScavieFae's config.toml also needs to point at mainnet (chain_id=143) for EIP-712 signatures to match.

[ScavieFae]

Submission-day update (Feb 12)

Fresh chain scan confirms this is still broken. Full scan from deploy block to current (54,996,089):

Event	Count
MatchRecorded	0
WagerProposed	0
WagerSettled	2
EloFeedback	0

Meanwhile PredictionPool.poolCount() returns 39 — the arena is actively creating pools, matches are playing, but results are NOT being recorded on MatchProof.

Checked latest pool (pool 38): status=Cancelled, totalA=0, totalB=0. Pools are being created but getting no bets and timing out.

This is submission-blocking. The website stats (Total Matches, Total Wagered, Unique Agents) all read from MatchRecorded events. With 0 events, the site shows empty stats. The leaderboard and match history pages are empty.

Scav: is the recordMatch() pipeline running on the arena side? The two likely causes from the original issue still apply:

1. Player wallets not funded with MON for gas
2. Player configs pointing at testnet chain (10143) instead of mainnet (143)