feat: Add comprehensive integration tests for Bridge quote fetching system

[devin-ai-integration]

feat: Add comprehensive integration tests for Bridge quote fetching system

Summary

This PR adds a comprehensive integration test suite for the Bridge quote fetching system with 24 test cases covering cross-chain transaction flows, quote validation, timeout handling, and error scenarios. The tests focus on the integration between useBridgeQuoteRequest and useBridgeQuoteData hooks with proper mocking of external bridge providers.

Key test coverage areas:

• Cross-chain flows: EVM↔EVM, EVM↔Solana bridging with proper address handling
• Quote validation: Amount conversion, decimals, insufficient balance, slippage
• Timeout/expiration: Quote refresh logic, debouncing, maximum retry limits
• Error scenarios: API failures, network issues, invalid responses, rate limiting
• End-to-end integration: Complete workflow from quote request to UI state updates

Review & Testing Checklist for Human

3 items to verify (Medium Risk - Test-only changes with complex mocking)

• Validate cross-chain scenarios match real user workflows - Verify the EVM-Solana bridging test cases cover the most common bridging flows users actually perform, especially chain ID mappings and destination address handling
• Check mock data alignment with actual bridge API responses - Compare the mock quote structures used in tests with real bridge provider API responses to ensure tests reflect actual data formats
• Test bridge functionality end-to-end in development environment - Since these are isolated hook tests with extensive mocking, manually test the actual bridge quote fetching flow to ensure real integration works correctly

Notes

• This PR only adds test files, no production code changes
• Tests use extensive mocking of Engine.context.BridgeController and external dependencies
• Timer-based debouncing logic uses jest.useFakeTimers() which may not catch real timing issues
• Created by @mbatchelor81 in Devin session: https://app.devin.ai/sessions/1c11e18de17e440faed225b565d7d2a4

[devin-ai-integration]

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