Wires the client-side optimistic-chain-plus-retry pattern from
`Parameters/ASM_Native/ASM-single-asset-throughput.md` §2d into both ASM
surfaces (beta wallet AsmCore + Potidaea dApp), plus a shared node.js
retry lib and a chipnet script that proves the fix on live infrastructure.
Same-target reservoir contention (measured 1/6 collision under naïve
parallel broadcast in Parameters/ASM_Native/ASM-no-shared-state-contention.md
§4) now resolves silently: on `txn-mempool-conflict`, the wallet
re-plans against the mempool-inclusive tip and rebroadcasts, bounded to
5 attempts with linear `n × 200 ms` backoff. Fully trustless — no
sequencer, no relay, no coordinator.
Chipnet-proven end-to-end: same 6 wallets, same reservoir tip, same
simultaneous `Promise.all` broadcast — Phase A (baseline) gets 1/6
accepted (reproducing §4 exactly), Phase B (wrapped in withRetry) gets
6/6 accepted, 20 total broadcasts, mean 3.3 attempts, all under 3 s.
Snapshots: 0272 (wallet), 0277 (Potidaea), 0275 (chipnet proof).
Contention doc amended with §4a "Wallet-layer resolution — client-side
retry turns 1/6 into 6/6".
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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