ca63c21080
Every user-facing string that previously said 'on-chain' or 'onchain' now says 'Bitcoin'. Lightning stays as 'Lightning'. Code identifiers (hook names, types, query keys, component names, tab state values) are unchanged — only text the user actually reads. Changes: Tab label 'On-chain' → 'Bitcoin' Dialog subtitle 'Send Bitcoin on-chain' → 'Send Bitcoin' Balance label 'Your on-chain balance' → 'Your Bitcoin balance' Confirm warning 'On-chain transactions…' → 'Bitcoin transactions…' Success 'sent on-chain' → 'sent via Bitcoin' Toasts 'On-chain zap sent/failed' → 'Bitcoin zap sent/failed' Error 'on-chain wallet has no funds' → 'Bitcoin wallet has no funds' PSBT error 'send on-chain zaps' → 'send Bitcoin zaps' NIP-31 alt 'On-chain zap' → 'Bitcoin zap' Secondary Lightning subtitle → 'Send a Lightning payment…'