Switch license from Apache 2.0 to AGPL-3.0

[RadCod3]

Motivation

Switch from Apache 2.0 to AGPL-3.0 to ensure network copyleft protection - anyone running modified versions as a service must share their changes.

Changes Required

1. Replace LICENSE file with AGPL-3.0 text (https://www.gnu.org/licenses/agpl-3.0.txt)
2. Add to pyproject.toml:

   license = {text = "AGPL-3.0-or-later"}

3. Update README.md with license badge and section
4. Update GitHub repository license setting

Files to Modify

• LICENSE - Replace entire file
• pyproject.toml - Add license field
• README.md - Add license information

Notes

• This is a breaking change for existing users/forks
• AGPL better suits server/network applications like MCP servers
• Announce license change in release notes