Disburse flows: full-screen gradient layout with hero amount + || CODE ||
badge, compact label/value summary (no borders/icons/separators), amber
pill confirm button, reference ID as subtle footer. Processing/error
states restyled to match.

Non-disburse flows: existing Card layout preserved with minor cleanup.

useFormFlowSummary: add extractHeroData() for amount/bank/rail extraction.

Co-Authored-By: Oz <oz-agent@warp.dev>