esp_rom_crc32_le(0xFFFFFFFF, ...) inverts the input (~0xFFFFFFFF = 0),
so the effective init is 0x00000000, not 0xFFFFFFFF (standard zlib).
This caused all NVS page/entry CRC checks to fail silently.
upload handling
- add app image parser/types/constants for ESP image header, extended
header, segments, and app description
- add shared binary read/write utilities and CRC32 helper
- add AppImageViewer component to inspect firmware metadata in UI
- improve upload UX: accept .bin only and show explicit error for ELF input
- prevent status alert timer race by clearing previous timeout before
setting a new one
- ignore .claude in .gitignore
kerms