feat: add fallback WebSocket connection to localhost:8545 #74
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When the ethui desktop app is unavailable, the extension now falls back to connecting to ws://localhost:8545 (standard Ethereum JSON-RPC port). This allows using the extension with any local Ethereum node when ethui is not running. Key changes: - Reorganized background connection code into separate modules: - appConnection.ts: handles ethui app connection - fallbackConnection.ts: handles fallback localhost:8545 connection - Extension periodically checks if ethui comes back online (every 5s) and automatically switches back to the main app connection - Badge shows "F" in amber when using fallback mode - Popup shows a fallback mode indicator when connected via fallback - Connection state now tracks the source (app vs fallback) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Remove unused type exports that were flagged by ts-unused-exports: - MessageHandler, DisconnectHandler from appConnection.ts - ConnectionState, ConnectionSource, getConnectionSource from connectionState.ts - MessageHandler, getFallbackEndpoint from fallbackConnection.ts - ConnectionSource from useConnectionState.ts Keep ConnectionState exported from useConnectionState as it's used by DisconnectedView. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Summary
ws://localhost:8545(standard Ethereum JSON-RPC port)Changes
appConnection.ts: handles ethui app connectionfallbackConnection.ts: handles fallback localhost:8545 connectionTest plan
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