Add support for the Filecoin.EthGetBlockReceipts V2

[sudo-shashank]

Summary of changes

Changes introduced in this pull request:

• Impl Filecoin.EthGetBlockReceipts V2 and added test.

Reference issue to close (if applicable)

Closes #6295

Other information and links

Change checklist

• I have performed a self-review of my own code,
• I have made corresponding changes to the documentation. All new code adheres to the team's documentation standards,
• I have added tests that prove my fix is effective or that my feature works (if possible),
• I have made sure the CHANGELOG is up-to-date. All user-facing changes should be reflected in this document.

Outside contributions

• I have read and agree to the CONTRIBUTING document.
• I have read and agree to the AI Policy document. I understand that failure to comply with the guidelines will lead to rejection of the pull request.

Summary by CodeRabbit

• New Features

  • Added Filecoin.EthGetBlockReceipts API v2 method to retrieve all transaction receipts for a block, supporting identification by number, hash, or special tags (e.g., "safe", "finalized").

• Tests

  • Added test coverage for the new v2 receipts endpoint with various block reference scenarios.

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[coderabbitai]

Walkthrough

The PR implements Filecoin.EthGetBlockReceipts for API v2 by refactoring the existing get_block_receipts function to accept a pre-resolved Tipset, introducing a new EthGetBlockReceiptsV2 method using ExtBlockNumberOrHash, and adding corresponding test cases.

Changes

Cohort / File(s)	Summary
Changelog & API Implementation CHANGELOG.md, src/rpc/methods/eth.rs, src/rpc/mod.rs	Added changelog entry for new feature. Refactored get_block_receipts to accept resolved Tipset instead of BlockNumberOrHash. Introduced EthGetBlockReceiptsV2 as new RPC method with ExtBlockNumberOrHash parameter, using v2 tipset resolver. Updated existing method handlers (EthGetBlockReceipts, EthGetBlockReceiptsLimited) to resolve block parameters before delegation. Added DESCRIPTION fields to both methods.
Testing & Snapshots src/tool/subcommands/api_cmd/api_compare_tests.rs, src/tool/subcommands/api_cmd/test_snapshots.txt	Added three new test cases for EthGetBlockReceiptsV2 covering block hash (identity test) and predefined tags (Safe, Finalized). Appended three corresponding snapshot files to test snapshots list.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• Add support for the Filecoin.EthGetBlockByNumber V2 #6404: Adds other V2 ETH RPC methods using the same v2 tipset resolver pattern in src/rpc/methods/eth.rs and src/rpc/mod.rs.
• Add support for the Filecoin.EthCall V2 #6339: Introduced the v2 tipset resolution flow (tipset_by_block_number_or_hash_v2 / ExtBlockNumberOrHash) that this PR leverages for the new EthGetBlockReceiptsV2 method.

Suggested reviewers

• hanabi1224
• akaladarshi

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: implementing Filecoin.EthGetBlockReceipts V2 API support, which is clearly reflected in all modified files.
Linked Issues check	✅ Passed	The PR successfully implements the RPC v2 method Filecoin.EthGetBlockReceipts as required by issue #6295, including new EthGetBlockReceiptsV2 method, tests, changelog entry, and all supporting changes.
Out of Scope Changes check	✅ Passed	All changes are directly related to implementing the V2 RPC method: core implementation, tests, snapshots, changelog, and registration—no unrelated modifications detected.

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✨ Finishing touches

• 📝 Generate docstrings

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[codecov]

Codecov Report

❌ Patch coverage is 86.95652% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 62.75%. Comparing base (a23d136) to head (173fc1b).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/rpc/methods/eth.rs	86.95%	2 Missing and 1 partial ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
src/rpc/mod.rs	24.47% <ø> (ø)
src/rpc/methods/eth.rs	69.21% <86.95%> (+0.21%)	⬆️

... and 6 files with indirect coverage changes

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