Add code block syntax to markdown file output

[RiverDave]

Currently, the code dumped in the markdown files we emit does not use the triple backtick (```) syntax to mark code snippets. We should update the output logic so that emitted markdown files properly wrap code sections with the correct code block syntax, using information from the outputContext.

Acceptance Criteria:

• All code snippets in emitted markdown files are properly wrapped in triple backticks (```).
• The language (e.g., rust, bash) should be specified if available from outputContext.
• Update the relevant part of the codebase responsible for markdown generation.
• Add or update tests to confirm correct code block formatting in output files.