When ElectrumX is indexing and can't accept TCP connections, the UI now shows the actual index size (e.g. "126.9 GB") in the Indexed Height field instead of a generic "Building..." label. Also shows the size in the status message for better progress visibility. Updated estimated full index size from 55GB to 130GB (2026 mainnet). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>