[meta] Track cleanup and implementation of known v0.2.0 limitations

[JohnBasrai]

This issue tracks the known limitations of the v0.2.0 release, as outlined in the release notes. These include compiler warnings, placeholder methods, and incomplete MEV strategy or relay support.

The goal is not just to silence warnings, but to either:

• Complete the underlying implementation
• Remove unused scaffolding
• Or explicitly annotate intentional dead code with #[allow(dead_code)] and TODO comments

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⚠️ Current Known Limitations

📦 MEVBundle struct

• min_timestamp, max_timestamp, total_gas are unused

🌐 RelayConfig struct

• endpoint and signing_key not yet used

✅ Validation

• validate_bundle() is defined but never called

💰 TxType enum

• ERC20Transfer fields token, amount unused
• Variants CompoundSupply and AaveBorrow not constructed anywhere

📊 MEVMetrics methods

• record_transaction(), record_opportunity()
• record_bundle_submission(), record_bundle_inclusion()

⚙️ Config struct

• from_env() and validate() are unused

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📌 Suggested Resolution Paths

Each item should be evaluated case-by-case:

• If planned for future use → document with #[allow(dead_code)] and inline TODO
• If obsolete or speculative → remove to reduce noise
• If ready to implement → break into smaller, focused issues

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🔗 Related Issues

• (Will be linked here when created)

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🧭 Goal

Track cleanup and/or completion of features scaffolded in v0.2.0, setting the stage for a cleaner and testable v0.3.0.