feat: add Mantle and MantleTestnet to EthereumNetworks enum

[skydudie]

This pull request adds support for the Mantle mainnet and testnet Ethereum networks throughout the codebase. The changes ensure that Mantle networks (netId 5000 and 5003) are recognized and properly handled in both the core logic and the test suite.

Mantle network support:

• Added mantle (netId 5000) and mantleTestnet (netId 5003) to the EthereumNetworks enum in dnsTxt.ts, enabling recognition of these networks in the application logic.
• Updated the EthereumNetworkIdT union type to include Mantle mainnet and testnet, ensuring type safety and validation for these new network IDs.

Testing enhancements:

• Added unit tests in index.test.ts to verify that Mantle mainnet and testnet records are accepted by parseDocumentStoreResults.
• Added a new Astron record to the expected results in the getDocumentStoreRecords for Astron test, likely to ensure comprehensive coverage for multiple networks.

Summary by CodeRabbit

• New Features

  • DNS TXT parsing now accepts any numeric chain/network ID (enabling support for networks like Mantle mainnet/testnet).

• Tests

  • Added unit tests ensuring network IDs in DNS TXT records are strictly numeric (accepted) and that non-numeric or alphanumeric IDs are rejected.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: a92e295f-f868-4ff5-b5a3-5122edb77948

📥 Commits

Reviewing files that changed from the base of the PR and between b76813f and d5032b1.

📒 Files selected for processing (2)

• src/index.test.ts
• src/records/dnsTxt.ts

🚧 Files skipped from review as they are similar to previous changes (2)

• src/index.test.ts
• src/records/dnsTxt.ts

---

📝 Walkthrough

Walkthrough

Replaces a fixed-set enum validation for netId in OpenAttestation DNS TXT parsing with a numeric-string constraint and adds unit tests validating that only purely numeric netId values are accepted and non-numeric/alphanumeric values are rejected.

Changes

Cohort / File(s)	Summary
DNS TXT type update src/records/dnsTxt.ts	Replaced EthereumNetworks enum and the union-of-literals EthereumNetworkIdT with a String.withConstraint that accepts only numeric strings (/^\d+$/). Removed unused Union import.
Tests: TXT parsing src/index.test.ts	Added unit tests for parseDocumentStoreResults ensuring openatts TXT netId is accepted only when purely numeric (returned as string), including previously-unseen numeric values, and rejected (empty array) when non-numeric or alphanumeric.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Poem

🐇🥕 I nibble on nets of numeric gold,
Only digits please—no letters bold.
Tests hop in, ears all alert,
Reject the mix, accept the pure dirt.
A tiny rabbit cheers the change, swift and bold.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Title check	⚠️ Warning	The PR title claims to add Mantle to the EthereumNetworks enum, but the actual changes remove the enum entirely and replace it with a numeric string validation pattern.	Update the title to accurately reflect the actual changes, such as: 'refactor: replace EthereumNetworks enum with numeric netId validation' or 'feat: broaden Ethereum network validation to accept any numeric netId'

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[isaackps]

For this, we can remove the EthereumNetworks & EthereumNetowrkIdT type check, instead we can change it to numeric string type check.

[skydudie]

Replaced the checks with a numeric string type check: d5032b1