Function extract_code_block 

pub fn extract_code_block(input: &str) -> Option<String>

Extracts the first fenced Markdown code block from the input string.

This function looks for a triple-backtick (```) fenced code block and returns the contents inside it. If a language identifier is present (e.g. ```rust), it is skipped automatically.

Arguments

• input - The input string that may contain a fenced code block.

Returns

• Some(String) containing the inner contents of the first code block
• None if no fenced code block is found