Restores pinned dependency versions for Rust

[dima-zakharov]

Pin libraries versions.

🔗 Related Issue

Pin rust libraries and maturin version as discussed in Slack

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📝 Summary

Restores pinned dependency versions for Rust tooling and adds stub files for the Rust plugin infrastructure.

Changes

 - Pin maturin version in pyproject.toml to ensure reproducible builds
 - Restore Cargo.lock files for plugins_rust/ and tools_rust/mcp_runtime/ directories (4,275 lines)
 - Add Python stub file (__init__.pyi) for url_reputation_rust module to improve type hints
 - Cleanup: Remove redundant .gitignore entries that were excluding lock files

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🏷️ Type of Change

• Bug fix
• Feature / Enhancement
• Documentation
• Refactor
• Chore (deps, CI, tooling)
• Other (describe below)

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🧪 Verification

Check	Command	Status
Build	make rust-build	Ok
Unit tests	make test	Ok
Coverage ≥ 81%	make coverage	Ok

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✅ Checklist

• Code formatted (make black isort pre-commit)
• Tests added/updated for changes
• Documentation updated (if applicable)
• No secrets or credentials committed

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📓 Notes (optional)

Chore task no functionality changes.

[dawid-nowak]

I think we still need to add Cargo.lock files from rust_plugins/* to git , don't we?

[lucarlig]

@dima-zakharov fast-test-server still missing cargo.lock

[lucarlig]

do the local pyproject.toml in each rust plugin and any other pyo3 user also need to have pinned versions?

[dima-zakharov]

do the local pyproject.toml in each rust plugin and any other pyo3 user also need to have pinned versions?

I checked these files they do not specify any deps in them. So we can add the lock files, but we can use them as is.

[dima-zakharov]

@brian-hussey Please review, the changes are very small, no code changes, just pinning the dependencies with .lock files and maturin version is specified in --dev section of main pyproject.toml. And try merge if you are happy, I am not allowed to merge this PR myself.

[brian-hussey]

Looks good to me

[brian-hussey]

I applied Admin override to merge this PR after all checks passed and getting multiple PR reviews from the team.