Fund-logic hardening (audit remediation):
- TransferModal: source asset id/decimals from the canonical MINTABLE_ASSETS
(wUSDT=1000, wDOT=1001, wETH=1002, wBTC=1003) instead of the wrong hardcoded
ids (BTC=3 was the deprecated "Old USDT", ETH=4, DOT=5). Route every non-native
asset through the Asset Hub api; only native HEZ uses the relay balances pallet.
Removes the latent wrong-asset / wrong-chain transfer.
- Replace BigInt(parseFloat(x)*10**dec) with string-based parseTokenInput in
TransferModal + 3 DEX init modals; BigInt(float) threw RangeError on common
fractional amounts (e.g. 100.3 HEZ), breaking sends and pool/bridge init.
- Presale.contribute now resolves a signer via getSigner and passes { signer }
to signAndSend (was signer-less -> broken for all users).
- presale.ts contribute/refund/claimVested now reject on dropped/invalid/usurped/
retracted tx states instead of hanging the UI forever.
pezkuwichain