[Gaubee]

Problem

When using TRON chain in the Forge miniapp, the "确认锻造" step fails with error:

Invalid base58 character: 0

This happens because:

1. TRON requires base58 address format (starts with T, 34 chars)
2. The API may return EVM format (0x...) or hex format (41...)
3. The transaction creation fails when passing wrong address format

Solution

1. Add address validation utilities (lib/chain.ts)

• isValidTronBase58Address() - validate T... format
• isTronHexAddress() - detect 41... format
• isEvmAddress() - detect 0x... format
• validateDepositAddress(chain, address) - returns error message if invalid

2. Validate before transaction (useForge.ts)

const addressError = validateDepositAddress(externalChain, depositAddress)
if (addressError) {
  setState({ step: 'error', orderId: null, error: addressError })
  return
}

3. Helpful error messages

• Invalid TRON address: received EVM format (0x...), expected base58 format (T...)
• Invalid TRON address: received hex format (41...), expected base58 format (T...)

Tests

File	Tests
chain.test.ts	19 new tests for address validation
useForge.test.ts	2 new tests for TRON handling
Total	59 tests passing

Root Cause Note

The actual fix requires the backend API to return TRON addresses in base58 format. This PR adds client-side validation to catch the error early with a helpful message, rather than failing deep in the transaction signing flow.