Standardize provider contract address storage

[its-applekid]

Summary

Refactors all provider contract address storage to follow a consistent { contracts, metadata } pattern, enabling automated address validation through abstract methods on base classes.

Changes

Phase 1: Restructured Address Maps

• ✅ Uniswap addresses → { contracts, metadata } pattern
• ✅ Aave addresses → { contracts, metadata } pattern
• ✅ Morpho addresses → { contracts, metadata } pattern

Phase 2: Abstract Methods

• ✅ Added abstract contractAddresses() to SwapProvider
• ✅ Added abstract contractAddresses() to LendProvider

Phase 3: Provider Implementations

• ✅ Implemented contractAddresses() in UniswapSwapProvider
• ✅ Implemented contractAddresses() in AaveLendProvider
• ✅ Implemented contractAddresses() in MorphoLendProvider

Phase 4: Test Updates

• ✅ Updated validateAddresses.test.ts to use generic provider iteration
• ✅ Removed hardcoded address map imports
• ✅ Added contractAddresses() to mock providers

Benefits

1. Compiler-enforced completeness — New providers must implement contractAddresses()
2. Automated validation — Tests validate all providers without manual imports
3. Consistent structure — All providers follow same { contracts, metadata } pattern
4. Self-documenting — Contract names as keys make address maps clear

Testing

• ✅ All existing tests pass (366 tests)
• ✅ TypeScript compilation succeeds
• ✅ Linter passes

Closes

Closes #328

[netlify]

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