[bmc08gt]

Group send no longer asks for a currency or checks a balance before the user has picked people. The currency is chosen on the confirm sheet, which is now the only place the balance is checked. Spec: code-payments/flipcash-client-orchestrator#84 (docs/specs/group-send.md, Sender steps 1-3). There is no Figma frame for this change; it is removals and copy only.

• Amount step: titled "Total Amount To Send" with no currency pill, no "Enter up to" hint and no balance ceiling. Next gates only on an amount above zero. ChatAmountEntryContent takes an optional title; DM send passes none and keeps its pill and hint. The ceiling is dropped for group sends in maxAmountFlow, and onConfirmRequested skips the balance check for them (the send-limit check stays).
• Select People: the group send caller passes "Split Between" and "Next" through new title and buttonText arguments. The request-money flow keeps its current title and button. Disabled-at-zero, the 10-max sheet and the too-small alert are unchanged.
• You in the split: Split Between starts with an unchecked "You" row, passed by the group send caller only. Checking You splits the total between everyone checked, You included, with You's part always the last share (so You never takes an extra cent), then drops You's part: only the other members are paid, in check order (one is a single payment, two or more a multi-payment). Next needs at least one member other than You. You counts toward the 10 cap: You plus 9 others is the most. The too-small check counts You. Confirm lists only the paid members, shows the entered total, and sendToMembers() checks the balance against the sum of the paid parts.
• Confirm sheet with You in the split: the per-person line reads "$X Each, including You" ("~" unless every part, You's included, is equal, X the smallest paid part), and shows even for a single paid member. The confirm sheet's Each strings are capitalized; the group send chat bubble keeps its own lowercase "each" strings.
• Confirm sheet: unchanged. It still opens on the globally selected token, and sendToMembers() still shows the insufficient balance alert with Add Money when the total exceeds the picked token's balance.

TokenCoordinator and TokenSelectionResolver are untouched.

Tests: ChatGroupCashLinkTest gains tests for the You row ($30.00 between You and 2 others pays $10.00 twice and charges $20.00; $1.00 with You checked at any position pays $0.34 and $0.33 and You keeps $0.33; only You blocks Next; You plus 9 others is the most; the too-small check counts You), one test where a total above the balance passes the amount step and is stopped at confirm by the insufficient-balance alert, and one for no hint and a confirmable amount on the group amount step.