Fix Bitcoin transaction detection to properly distinguish between
Lightning and on-chain transactions by checking the invoice field.
Detection logic:
- Bitcoin: invoice field contains a Bitcoin address (not "ln..." invoice)
- Lightning: invoice field starts with "ln" (lnbc, lntb, etc.)
- Supports all Bitcoin address formats: legacy (1..., 3...), bech32 (bc1...)
- Supports testnet addresses: tb1..., 2..., m/n...
Display logic:
- Bitcoin: Show payment_hash (or preimage) as Transaction ID
- Link to mempool.space for blockchain exploration
- Lightning: Show payment hash and preimage separately
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
1dd3841220