Corrected widespread misinformation claiming API tokens cannot access guest agent data on Proxmox 9.
Changes:
- Rewrote VM_DISK_MONITORING.md with accurate technical explanation
- Deleted VM_DISK_STATS_TROUBLESHOOTING.md (contained false information)
- Updated FAQ.md with correct quick reference and troubleshooting link
- Added comprehensive VM disk troubleshooting section to TROUBLESHOOTING.md
- Fixed README.md troubleshooting reference
- Updated frontend tooltip to show accurate permission requirements
- Corrected backend log messages to remove "known limitation" language
- Updated test-vm-disk.sh diagnostic script with accurate guidance
Key corrections:
- API tokens work fine for guest agent queries on both PVE 8 and 9
- Proxmox API returning disk=0 is normal behavior, not a bug
- Both tokens and passwords work equally well
- Only requirements: guest agent installed + proper permissions
- Permission issues are config problems, not authentication method limitations
Documentation now provides clear user journey: FAQ → Troubleshooting → Full Guide
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
