fix(ci): move snapshot tests to using cargo test

[hanabi1224]

Summary of changes

Changes introduced in this pull request:

Reference issue to close (if applicable)

Closes

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

• Chores
  • Restructured testing infrastructure with new feature flags to improve test organization and execution
  • Refactored test task configuration to separate test runners and enhance testing efficiency
  • Updated code coverage configuration to align with new testing structure

[coderabbitai]

Walkthrough

The changes introduce new Cargo feature declarations (test, cargo-test, doctest-private, benchmark-private, interop-tests-private) and apply conditional compilation guards to test code using the cargo-test feature. Test functions are renamed with a cargo_test_ prefix, and build tasks are reorganized in mise.toml to split test execution between nextest and cargo test runners.

Changes

Cohort / File(s)	Summary
Feature Declarations AGENTS.md, Cargo.toml	Adds five new feature declarations: test, cargo-test, doctest-private, benchmark-private, and interop-tests-private with inline documentation explaining their purpose.
Build System build.rs	Adds #[cfg(feature = "cargo-test")] conditional compilation guard to the generated test function and renames generated test function from rpc_snapshot_test_{ident} to cargo_test_rpc_snapshot_test_{ident}.
Task Configuration mise.toml	Renames test:rust task to test:nextest with feature flags, introduces new test:cargo task for cargo test execution, updates top-level test task to invoke both variants, and enables feature flags in codecov task.
Test Code with Feature Gates src/state_manager/utils.rs, src/tool/subcommands/api_cmd/test_snapshot.rs	Wraps test functions and imports with #[cfg(feature = "cargo-test")], renames test functions with cargo_test_ prefix (e.g., state_compute_mainnet_5709604 → cargo_test_state_compute_mainnet_5709604), and adds #[allow(dead_code)] attribute to suppress warnings.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Possibly related PRs

• fix(ci): reduce logs in CI tests to speed up the jobs #6382: Renames and cfg-gates generated test functions (rpc_snapshot_test_{ident} → cargo_test_rpc_snapshot_test_{ident}), directly affecting test filtering and naming consistency.
• test: refactor rpc_regression_tests into individual tests #5930: Modifies RPC regression test generation in build.rs with feature-gating logic for generated per-snapshot test functions.
• fix(test): speed up test-release and codecov on CI #6372: Modifies the same test snapshot code in src/tool/subcommands/api_cmd/test_snapshot.rs with changes to function attributes and test execution guards.

Suggested reviewers

• akaladarshi
• LesnyRumcajs
• sudo-shashank

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'fix(ci): move snapshot tests to using cargo test' directly and clearly describes the main change: migrating snapshot tests to use cargo test instead of another mechanism.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch hm/ci-nextest-stats

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