/**
 * Canonical width (in CSS pixels) for every right-side rail in the app.
 *
 * Consumers:
 *  - Transaction Categorization activity panel
 *    (`expenseAutomation/sections/transactionCategorization/.../activity`)
 *  - Transaction Categorization "review confirm transfer" panel
 *    (`expenseAutomation/sections/transactionCategorization/reviewConfirmTransferDrawer`)
 *  - Transaction detail page transfer panel
 *    (`transactionDetail/.../transferDrawer`)
 *  - Storybook `RailShell` decorators in any of the above
 *
 * Contract:
 *  - New consumers MUST import and use this constant instead of hardcoding a
 *    width or re-deriving one. Visual parity across rails is non-negotiable.
 *  - The transfer-drawer inner layout (`TRANSFER_DRAWER_LAYOUT` in
 *    `transferUiConstants.ts`) assumes this width — change here means
 *    re-validating the labelled rows inside that drawer.
 *  - This is a layout constant only; do NOT bake business logic on top of it.
 */
export declare const RIGHT_SIDE_PANEL_WIDTH_PX = 410;