refactor: complete wave 7 refactoring for issues #748, #749, #750, and #751

[bitcoindev817-hue]

Description

This pull request delivers the complete Wave 7 refactoring across testing, environment configuration, multi-chain payment processing, and frontend routing performance for SubTrackr.

Issues Closed

• Closes Refactor testing infrastructure to use test containers and fixtures #748
• Closes Refactor configuration management to use environment-specific configs #749
• Closes Refactor frontend routing to use lazy loading with code splitting #750
• Closes Refactor payment processing to use strategy pattern for multi-chain support #751

---

Detailed Changes

1. Testing Infrastructure Refactor (#748)

• Added in for containerized environment management, seed data injection, and clean teardowns.
• Implemented utility for identifying flaky assertions across multiple iterations.
• Created model fixture factories (, , , ) in .
• Integrated snapshot testing support and snapshot verification tests in .

2. Configuration Management Refactor (#749)

• Implemented singleton in with multi-environment (, , , ) support using Zod schema validation.
• Added secret resolution with AWS Secrets Manager support (and local fallback).
• Added environment config comparison () and drift detection () utilities.
• Created comprehensive documentation in .

3. Frontend Routing & Code Splitting Refactor (#750)

• Refactored to lazily load and via alongside existing lazy routes to optimize initial bundle size.
• Maintained route transition error boundaries with .

4. Multi-Chain Payment Strategy Refactor (#751)

• Implemented the Strategy pattern for multi-chain payment processing in .
• Added interface along with and (Soroban support).
• Created for dynamic strategy resolution based on chain type or token symbol.
• Integrated for centralized, cross-chain payment history logging.

---

Verification

• Added test coverage in , , and .

[drips-wave]

@bitcoindev817-hue Great news! 🎉 Based on an automated assessment of this PR, the linked Wave issue(s) no longer count against your application limits.

You can now already apply to more issues while waiting for a review of this PR. Keep up the great work! 🚀

Learn more about application limits