Add front matter metadata to .txt or .md files

Files currently lack metadata such as author, date, keywords, or summary. Adding this information would help organize, search, and understand each entry.

Use YAML front matter at the beginning of .md or .txt files with fields like:
---
title: "AI Balance Debate"
author: "Author Name if known"
date: "YYYY-MM-DD"
tags: ["AI", "ethics", "philosophy"]
summary: "A brief summary of the content..."
---
