bug(windows): amplifier update --force fails with [WinError 5] on bundle cache directories

[hoopsomuah]

Description

amplifier update fails on Windows when clearing cached bundle directories. All bundle updates fail with [WinError 5] Access is denied. This is a companion issue to the module cache bug.

Error Output

⚠ Update completed with errors
  ✗ Bundle: amplifier: [WinError 5] Access is denied:
    'C:\Users\...\.amplifier\cache\amplifier-bundle-modes-..\.git\objects\pack\pack-....idx'
  ✗ Bundle: browser-tester: [WinError 5] Access is denied: ...
  ✗ Bundle: core: [WinError 5] Access is denied: ...
  (all bundles fail)

Root Cause

Git pack files (.git/objects/pack/*.idx) are created read-only on Windows. amplifier-foundation's sources/git.py calls shutil.rmtree() without a Windows-compatible error handler when clearing bundle caches for update.

Fix

• microsoft/amplifier-foundation#137
• microsoft/amplifier-app-cli#152