Remove scripts and transcripts source folders

[Copilot]

This PR removes the ./scripts and ./transcripts folders from the repository as they contain source/build artifacts that are no longer needed.

What was removed

./scripts folder

Contains Python utility scripts that were used to convert raw transcript data into Jekyll format:

• convert_transcripts.py - Converts meta.json and transcript.vtt files to Jekyll posts
• download.py - Downloads transcripts from YouTube
• README.md - Documentation for the conversion scripts

./transcripts folder

Contains 349 subdirectories with raw source data:

• Each subdirectory contains meta.json (video metadata) and transcript.vtt (raw transcript)
• This data has already been processed and converted into the Jekyll website format

What remains intact

The actual website content is unaffected:

• ✅ 349 markdown posts in _posts/ directory
• ✅ 349 VTT caption files in _includes/captions/ directory
• ✅ All Jekyll configuration, layouts, and plugins
• ✅ Documentation (README.md, INSTALL.md)

Why this is safe

1. All transcript data has already been converted and lives in _posts/ and _includes/captions/
2. The scripts were only used for the initial data conversion and are no longer needed for the website to function
3. INSTALL.md already documents how to add new transcripts directly to _posts/, making the conversion scripts unnecessary
4. No GitHub workflows or Jekyll configuration reference these folders

This cleanup reduces repository size and removes unnecessary source artifacts while keeping all functional website components intact.

Original prompt

remove the ./scripts and ./transcripts folders

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.