Add test suite for UniswapV3SwapperProvider contract covering:
- Configuration validation (TokenConfig, RouteConfig preconditions)
- Provider initialization with valid/invalid parameters
- Swapper retrieval logic and key generation
- ComponentInfo structure validation
Includes 14 test cases (9 passing) and supporting test scripts.
Remaining tests require TokenA/TokenB bridge setup.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

...termediary token
Add optional `intermediaryToken` parameter to SwapperProvider.init that
auto-generates multi-hop routes for unconfigured token pairs through a
configurable intermediary (e.g., WFLOW). Also generates reverse routes
for explicit single-hop routes to ensure full bidirectional coverage.
Includes forked mainnet tests with pool discovery, unit tests for
intermediary behavior, and a Uniswap V3 swap transaction.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>