README Updater

Update the root README.md to reflect all companies in the repo, matching the established format.

Workflow

1. Discover companies

List all top-level directories that contain a COMPANY.md file. Skip default/, skills/, and any dotfile directories.

2. Gather data for each company

For each company directory, collect:

• Name and description — from COMPANY.md YAML frontmatter (name) and the prose body (first paragraph after the frontmatter closing ---)
• Upstream source — from the Generated from [name](url) line at the bottom of COMPANY.md. Extract both the display name and the URL
• Agents — list subdirectories under agents/. Count them. Format agent names by replacing hyphens with spaces and title-casing
• Skills — list skills/*/SKILL.md files. Count them. Use the directory name as the skill name