Windows permission fixer for router installations.
This class handles permission issues on Windows platforms where
older I2P installations may have set overly broad file permissions.
It detects installations that need permission fixes and runs
the appropriate scripts to tighten security.
Platform Specific:
- Only runs on Windows platforms
- Skipped on embedded installations (killVMOnEnd = false)
- Requires write permissions to base directory
The fix is applied once per installation and marked as complete
to avoid repeated execution. This is particularly important for
installations upgraded from versions prior to 0.9.46.