Avoid panic on truncated input by using bounds-checked slice in CLI

[jmestwa-coder]

Summary

This PR improves the robustness of the CLI by removing panic paths when handling user-provided input files.

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Architectural Changes

None.

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New Features

None.

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Improvements

• Replaced unchecked slicing (&bytes[..SIZE]) with bounds-checked access using .get(..SIZE)
• Ensures safe handling of truncated or malformed input files
• Aligns with existing safe slice usage patterns in the codebase
• Replaced one .unwrap() in convert_fk flow with proper error propagation using .context(...)

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Bug Fixes

• Fixed panic when processing files smaller than FileRecord::SIZE
• Fixed potential panic in convert_fk path by replacing .unwrap() with error propagation

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Testing and Validation

• Verified that truncated files now return a clean error instead of panicking
• Confirmed valid files behave unchanged
• Ensured compilation succeeds without introducing new warnings or errors

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Documentation

No documentation changes.

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Notes

• Changes are limited to CLI only
• No impact on library behavior
• No API changes
• Follows existing error handling patterns

[gemini-code-assist]

Code Review

This pull request improves error handling in anise-cli/src/main.rs by replacing direct slice indexing with safe access and converting some .unwrap() calls to proper error propagation. The review feedback correctly identifies remaining .unwrap() calls that should be replaced with the ? operator to ensure the application handles malformed input gracefully without panicking.

[ChristopherRabotin]

Could you apply the attached patch. I can't push to your branch. Thanks

patch.txt

[jmestwa-coder]

I’ve applied the changes to the branch.

Please let me know if anything else needs adjustment.

[ChristopherRabotin]

Great, thank you!