switch bundlewrap install to editable from CroneKorkN/bundlewrap@main

Replaces the PyPI 5.0.3 pin with an editable github clone of the personal
fork. The fork tracks upstream main and carries an agent-oriented
AGENTS.md the rest of this repo's docs link to.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

requirements.txt

@@ -1,4 +1,4 @@
-bundlewrap ~=5.0, >=5.0.3
+-e git+https://github.com/CroneKorkN/bundlewrap.git@main#egg=bundlewrap
 pycryptodome
 PyNaCl
 PyYAML