MemRelay/projects/4f53c06a-c6c3-40ec-b2fc-5f019ea45fc0/curated/Project CPE Glossary.md

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Glossary

Term	Definition
OTA	Over‑The‑Air update package containing the backend binary, the compiled front‑end www/ assets and the FRPC client. Packaged as udx710-ota-{VERSION}.tar.gz with a meta.json manifest (version, commit, checksums, architecture).
FRPC	Fast Reverse Proxy client (v0.70.1) bundled with the OTA. Used to expose services from the device to a remote server. Managed by backend/src/state.rs (install, config render, start/stop, log rotation).
DBus / ofono	Linux D‑Bus interface to the modem stack, provided by the ofono daemon. The project communicates via the zbus crate, wrapping interfaces such as MessageManager, VoiceCallManager, etc.
Serial AT lock	Global mutex (DBUS_LOCK) that serialises all AT commands and DBus calls to avoid org.ofono.Error.InProgress. Implemented in backend/src/serial.rs and used via with_serial.
USB Gadget Hot‑Switch	Runtime re‑configuration of the USB‑OTG gadget (NCM, ECM, RNDIS) using configfs. Implemented in backend/src/usb_switch.rs. Persistent mode stored in /mnt/data/mode.cfg.
Band‑mask	Bit‑mask representation of LTE/NR carrier bands. Mapping is hardware‑specific (Rockchip/Unisoc) and handled by utility functions in backend/src/utils.rs.
Vite	Front‑end build tool (v7) used to compile the React 19 source into a static dist/ directory.
MUI	Material‑UI React component library (v7) providing theming and UI widgets.
TanStack Query	Data‑fetching library (@tanstack/react-query v5) used for API calls with caching and background refetch.
Vaultwarden	Self‑hosted Bitwarden compatible password manager; the sole source of stored secrets for this project.
UPX	Optional executable compressor used in the CI pipeline to shrink the backend binary size.
CORS	Cross‑Origin Resource Sharing configuration; currently set to allow any origin (*).
CI pipeline	GitHub Actions workflow (.github/workflows/build-ota.yml) that builds backend and frontend, optionally compresses binaries, creates OTA tarball, verifies checksums, and uploads artifacts.
Refresh interval	UI polling frequency controlled via RefreshContext; default 5 s, adjustable through the Top‑Bar menu.
InitScript	Device initialization shell script (init.sh) editable via the UI; static analysis warns about syntax issues and potentially dangerous commands.

All definitions are extracted directly from the evidence (see source IDs in the surrounding documents).