Summary:
Fixed SD card mount error detection by enabling immediate mounting, made the status icon clickable to access settings, and added real-time status display (including filesystem type) in the SD card settings page.
Changes:
- Changed f_mount() to immediate mounting for error detection
- Made SD card status icon clickable, linking to an enhanced sd card settings page that now includes live display of card status and filesystem type
- Removed "SDCard Error" menu item
Lots of re-plumbing to make this work, including a bunch of Unicode stuff now in the binary. Bloat City, I'm sure.
TODO: FatFs using unsigned (uint16_t) for UTF16 representation is kinda inconvenient. Lots of reinterpret_cast<>().