PocketOBI v2.7.1: Japanese review, finer readings

A native-speaker review of the Japanese, and finer readings.

Changed

• Japanese reviewed by a native speaker: more natural, more precise wording throughout (for example 製造番号 for the serial number, 定格容量 for the rated capacity, 製造日 / 組立日 for the dates, タッチ in the touch hints), the temperature shown with ℃, and the charge count as 充電回数 127. Thanks to @k-suzuki959 for the review (#35)!
• Finer readings, in every build: cell voltages to 3 decimals (cell bars, Health, Debug), pack voltage to 2 decimals on the home tile, temperatures to 0.1 degree.

Added

• One build switch per Asian language (ENABLE_JA, ENABLE_KO, ENABLE_ZH, ENABLE_ZH_TW) for those who build from source: leave a language out for a smaller image. The Asia images below still carry them all.

No change to the reading, the verdicts or the PC bridge: the PackScope companion app needs no update.

Known issue

Flashing a .bin by hand at 0x0 resets the saved settings (language, screen flip, touch calibration). The web flasher keeps them unless you tick "Erase device". After a manual flash, set them again (on a touch board: Tools > Settings > Calibrate touch).

Full changelog: CHANGELOG.md.

Which file do I flash?

Hardware	English / French / German / Spanish	Asia: English / Japanese / Korean / Vietnamese / Chinese (Simplified and Traditional)
ESP32-C3 SuperMini + ST7789 + EC11 encoder (reference)	PocketOBI-v2.7.1-esp32-c3.bin	PocketOBI-v2.7.1-esp32-c3-asia.bin
CYD ESP32-2432S028R (touch)	PocketOBI-v2.7.1-cyd.bin	PocketOBI-v2.7.1-cyd-asia.bin
CYD with an ILI9341 screen (mirrored image on the plain CYD build)	PocketOBI-v2.7.1-cyd-ili9341.bin	build from source with CYD_ILI9341
ES3C28P (ESP32-S3, capacitive touch)	PocketOBI-v2.7.1-es3c28p.bin (+ Vietnamese)	build from source

Easiest: the web flasher, from Chrome or Edge, nothing to install. Or by hand: each .bin is a merged image (bootloader + partitions + app), flashed at address 0x0.

pip install esptool
esptool --chip esp32c3 write_flash 0x0 PocketOBI-v2.7.1-esp32-c3.bin
esptool --chip esp32   write_flash 0x0 PocketOBI-v2.7.1-cyd.bin
esptool --chip esp32s3 write_flash 0x0 PocketOBI-v2.7.1-es3c28p.bin

If a CYD flash stops halfway ("chip stopped responding"), add --baud 115200. If the ES3C28P is not detected, hold BOOT, press RESET, then release BOOT. SHA-256 checksums are in SHA256SUMS.txt. The *-parts.zip files hold the separate images and their offsets (OFFSETS.txt).

Never connect the pack's B+ (18 V) to the ESP32.