Merge Manolis's e2e + grief + store + free-tier stack

[funkiirabu]

Cumulative merge of 4 stacked PRs from manolisliolios/mppsui:

• e2e test scaffold + biome lint migration (eslint → biome)
• Grief protection (sender == payer signed proof)
• DigestStore now required (no implicit in-memory replay protection)
• Currency abstraction + free-tier exposure + USDC_TESTNET / SUI_DOLLAR types

Local quality gates:

• 29/29 unit tests pass
• typecheck clean
• biome lint clean
• tsup build clean

Breaking changes (consumers will need to migrate):

• sui() factory now requires currency: Currency (object, not string)
• SuiServerOptions.store now required
• Client signer must implement signPersonalMessage() for grief proof

Version bump to 0.7.0 will land in a follow-up commit on main before npm publish.

Source PRs (Manolis's fork):

• Ml/add e2e test scaffold manolisliolios/mppsui#1
• [2/n] Adds grief protection manolisliolios/mppsui#2
• [3/n] Make store required for replay protection manolisliolios/mppsui#3
• [4/n] Address balances, free tier & more default types manolisliolios/mppsui#4

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Project	Deployment	Actions	Updated (UTC)
suimpp	Ready	Preview, Comment	May 22, 2026 9:05am