12. Glossary

Term	Meaning
Account	Household or business; data, rights and billing boundary
Sub-user	User created by an account, possibly without e-mail address
Role	Named bundle of single permissions
Permission	Single right such as mower.control
Site	Location of an account with address, time zone and own map
Group	Collection of mowers, possibly across sites
Principal	The authenticated user or API token making a request
Gateway	Single entry point (Traefik)
Device-Gateway	Service that holds connections to mowers and bridges
Bridge	ESP32 on the mower that connects Bluetooth with WLAN
PyMammotion	Python library speaking the Mammotion protocol
RTK	Real-time kinematic positioning for centimeter accuracy
Network RTK	Correction data delivered over 4G instead of an own station
OpenFGA	Open source relationship-based authorization service (Zanzibar model)
JetStream	Persistence layer of NATS
JWT / JWKS	Signed token / published set of public keys to verify it
Entitlement	Statement what an account may do under its plan
Mowing pattern	Plug-in that turns an area and settings into a route
Spot mowing	Mowing a user-drawn area of arbitrary shape
ADR	Architecture decision record
arc42	Template for architecture documentation
C4	Context, container, component, code: diagram levels
PWA	Progressive web app, installable from the browser
HACS	Home Assistant Community Store
Gate	Release criterion at the end of a phase

---

Mirrored from docs/architecture/12-glossary.md at commit 94c46ef36cabac4c3a0bacfc0cc0c0af4defdca3. Edit the file in the repository, not this wiki page.