16 add default language re prompt if not found for a given problem

[dfayd0]

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[Copilot]

Pull Request Overview

This PR adds a fallback prompt loop when the configured or provided default language is invalid, adjusts error types for parsing languages, and extends the API runner with helper methods for fetching problem details.

• Changed parse_programming_language to return std::io::Error and added a re-prompt function prompt_for_language
• Updated main.rs to loop on invalid language input until a supported language is entered
• Introduced get_problem_name and get_available_languages in the API runner and improved client initialization error handling

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
src/utils.rs	Changed parse errors to io::Error, added prompt_for_language
src/main.rs	Integrated prompt loop for default language and retry logic
src/leetcode_api_runner.rs	Added get_problem_name, get_available_languages, and enhanced error handling in client setup

Comments suppressed due to low confidence (2)

src/utils.rs:37

• Using std::io::Error to represent a language-parse failure is misleading since this isn't an I/O operation. Consider defining a domain-specific error enum or custom error type to clearly represent parsing errors.

) -> Result<leetcoderustapi::ProgrammingLanguage, std::io::Error> {

src/utils.rs:166

• The new prompt_for_language logic isn't covered by existing tests. Consider adding unit or integration tests to validate input handling and retry behavior.

pub fn prompt_for_language(