feat(frontend): align wUSDT Asset ID with SDK (1000)

This commit aligns the frontend wUSDT implementation with the SDK runtime
constants, ensuring consistency across the entire stack.

Changes:
- Update ASSET_IDS.WUSDT from 2 → 1000 (matches SDK constants)
- Add ASSET_CONFIGS with wUSDT configuration (6 decimals, min balance)
- Update all asset queries in AccountBalance.tsx to use ASSET_IDS.WUSDT
- Update pool queries for wHEZ/wUSDT and PEZ/wUSDT pools
- Update USDTBridge.tsx burn transaction to use ASSET_IDS.WUSDT
- Refactor usdt.ts to reference ASSET_CONFIGS instead of hardcoded values

Asset ID Allocation Strategy:
- 0-999: Reserved for protocol tokens (wHEZ, PEZ, etc.)
- 1000+: Bridged/wrapped external assets (wUSDT, etc.)

Technical Details:
- wUSDT uses 6 decimals (USDT standard), not 12 like native HEZ
- All frontend code now uses centralized ASSET_CONFIGS
- ESLint passes with 0 errors (8 pre-existing warnings unrelated to changes)

This is part of Phase 1 wUSDT infrastructure setup, working in parallel
with SDK benchmarking builds currently running in background.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

shared/lib/usdt.ts

@@ -4,15 +4,15 @@
 // Handles wUSDT minting, burning, and reserve management
 
 import type { ApiPromise } from '@polkadot/api';
-import { ASSET_IDS } from './wallet';
+import { ASSET_IDS, ASSET_CONFIGS } from './wallet';
 import { getMultisigMembers, createMultisigTx } from './multisig';
 
 // ========================================
 // CONSTANTS
 // ========================================
 
-export const WUSDT_ASSET_ID = ASSET_IDS.WUSDT;
+export const WUSDT_ASSET_ID = ASSET_CONFIGS.WUSDT.id;
-export const WUSDT_DECIMALS = 6; // USDT has 6 decimals
+export const WUSDT_DECIMALS = ASSET_CONFIGS.WUSDT.decimals;
 
 // Withdrawal limits and timeouts
 export const WITHDRAWAL_LIMITS = {

shared/lib/wallet.ts

@@ -31,16 +31,47 @@ export const CHAIN_CONFIG = {
 // ========================================
 // ⚠️ IMPORTANT: HEZ is the native token and does NOT have an Asset ID
 // Only wrapped/asset tokens are listed here
+//
+// Asset ID Allocation:
+// - 0-999: Reserved for protocol tokens (wHEZ, PEZ, etc.)
+// - 1000+: Bridged/wrapped external assets (wUSDT, etc.)
 export const ASSET_IDS = {
   WHEZ: parseInt(import.meta.env.VITE_ASSET_WHEZ || '0'),  // Wrapped HEZ
   PEZ: parseInt(import.meta.env.VITE_ASSET_PEZ || '1'),    // PEZ utility token
-  WUSDT: parseInt(import.meta.env.VITE_ASSET_WUSDT || '2'), // Wrapped USDT (multisig backed)
+  WUSDT: parseInt(import.meta.env.VITE_ASSET_WUSDT || '1000'), // Wrapped USDT (6 decimals, matches SDK)
   USDT: parseInt(import.meta.env.VITE_ASSET_USDT || '3'),
   BTC: parseInt(import.meta.env.VITE_ASSET_BTC || '4'),
   ETH: parseInt(import.meta.env.VITE_ASSET_ETH || '5'),
   DOT: parseInt(import.meta.env.VITE_ASSET_DOT || '6'),
 } as const;
 
+// ========================================
+// ASSET CONFIGURATIONS
+// ========================================
+export const ASSET_CONFIGS = {
+  WHEZ: {
+    id: ASSET_IDS.WHEZ,
+    symbol: 'wHEZ',
+    name: 'Wrapped HEZ',
+    decimals: 12,
+    minBalance: 1_000_000_000, // 0.001 HEZ
+  },
+  PEZ: {
+    id: ASSET_IDS.PEZ,
+    symbol: 'PEZ',
+    name: 'PEZ Utility Token',
+    decimals: 12,
+    minBalance: 1_000_000_000, // 0.001 PEZ
+  },
+  WUSDT: {
+    id: ASSET_IDS.WUSDT,
+    symbol: 'wUSDT',
+    name: 'Wrapped USDT',
+    decimals: 6, // ⚠️ CRITICAL: wUSDT uses 6 decimals (USDT standard), not 12!
+    minBalance: 1_000, // 0.001 USDT
+  },
+} as const;
+
 // ========================================
 // EXPLORER URLS
 // ========================================

web/src/components/AccountBalance.tsx

@@ -89,15 +89,15 @@ export const AccountBalance: React.FC = () => {
       const { blake2AsU8a } = await import('@polkadot/util-crypto');
       const PALLET_ID = stringToU8a('py/ascon');
 
-      // Fetch wHEZ/wUSDT pool reserves (Asset 0 / Asset 2)
+      // Fetch wHEZ/wUSDT pool reserves (Asset 0 / Asset 1000)
-      const whezPoolId = api.createType('(u32, u32)', [0, 2]);
+      const whezPoolId = api.createType('(u32, u32)', [0, ASSET_IDS.WUSDT]);
       const whezPalletIdType = api.createType('[u8; 8]', PALLET_ID);
       const whezFullTuple = api.createType('([u8; 8], (u32, u32))', [whezPalletIdType, whezPoolId]);
       const whezAccountHash = blake2AsU8a(whezFullTuple.toU8a(), 256);
       const whezPoolAccountId = api.createType('AccountId32', whezAccountHash);
 
       const whezReserve0Query = await api.query.assets.account(0, whezPoolAccountId);
-      const whezReserve1Query = await api.query.assets.account(2, whezPoolAccountId);
+      const whezReserve1Query = await api.query.assets.account(ASSET_IDS.WUSDT, whezPoolAccountId);
 
       if (whezReserve0Query.isSome && whezReserve1Query.isSome) {
         const reserve0Data = whezReserve0Query.unwrap();
@@ -114,15 +114,15 @@ export const AccountBalance: React.FC = () => {
         if (import.meta.env.DEV) console.warn('⚠️ wHEZ/wUSDT pool has no reserves');
       }
 
-      // Fetch PEZ/wUSDT pool reserves (Asset 1 / Asset 2)
+      // Fetch PEZ/wUSDT pool reserves (Asset 1 / Asset 1000)
-      const pezPoolId = api.createType('(u32, u32)', [1, 2]);
+      const pezPoolId = api.createType('(u32, u32)', [1, ASSET_IDS.WUSDT]);
       const pezPalletIdType = api.createType('[u8; 8]', PALLET_ID);
       const pezFullTuple = api.createType('([u8; 8], (u32, u32))', [pezPalletIdType, pezPoolId]);
       const pezAccountHash = blake2AsU8a(pezFullTuple.toU8a(), 256);
       const pezPoolAccountId = api.createType('AccountId32', pezAccountHash);
 
       const pezReserve0Query = await api.query.assets.account(1, pezPoolAccountId);
-      const pezReserve1Query = await api.query.assets.account(2, pezPoolAccountId);
+      const pezReserve1Query = await api.query.assets.account(ASSET_IDS.WUSDT, pezPoolAccountId);
 
       if (pezReserve0Query.isSome && pezReserve1Query.isSome) {
         const reserve0Data = pezReserve0Query.unwrap();
@@ -262,9 +262,9 @@ export const AccountBalance: React.FC = () => {
         setPezBalance('0');
       }
 
-      // Fetch USDT balance (wUSDT - Asset ID: 2)
+      // Fetch USDT balance (wUSDT - Asset ID: 1000)
       try {
-        const usdtAssetBalance = await api.query.assets.account(2, selectedAccount.address);
+        const usdtAssetBalance = await api.query.assets.account(ASSET_IDS.WUSDT, selectedAccount.address);
 
         if (usdtAssetBalance.isSome) {
           const assetData = usdtAssetBalance.unwrap();

web/src/components/USDTBridge.tsx

@@ -15,6 +15,7 @@ import {
   formatWUSDT,
 } from '@pezkuwi/lib/usdt';
 import { isMultisigMember } from '@pezkuwi/lib/multisig';
+import { ASSET_IDS } from '@pezkuwi/lib/wallet';
 
 interface USDTBridgeProps {
   isOpen: boolean;
@@ -115,7 +116,7 @@ export const USDTBridge: React.FC<USDTBridgeProps> = ({
 
       // Burn wUSDT
       const amountBN = BigInt(Math.floor(amount * 1e6)); // 6 decimals
-      const burnTx = api.tx.assets.burn(2, selectedAccount.address, amountBN.toString());
+      const burnTx = api.tx.assets.burn(ASSET_IDS.WUSDT, selectedAccount.address, amountBN.toString());
 
       await burnTx.signAndSend(selectedAccount.address, { signer: injector.signer }, ({ status }) => {
         if (status.isFinalized) {