* add import/export for camera group layouts and streaming settings
Camera group layouts and per-camera streaming settings are stored in the browser's IndexedDB, so they are tied to a single browser on a single device. Users with more than one device have to rebuild every group layout and re-pick every camera's stream settings by hand, and clearing browser data loses the work.
Add a Backup & Restore card to Settings > UI Settings that exports these settings to a JSON file and imports that file on another device. Import shows a confirmation dialog with per-section counts, switches for layouts, streaming settings, and UI preferences, and warnings about camera groups or cameras in the file that are not on this server.
Server-side storage is deliberately avoided. These are per-device presentation settings: a layout arranged for a desktop is wrong on a tablet, and continuous full-resolution streams that are free on a wired LAN are not on a phone. An explicit file moves settings only when the user chooses to move them.
Implementation notes:
- web/src/utils/uiSettingsTransfer.ts owns a registry of transferable IndexedDB keys. Each entry records whether the key is user-namespaced, matching which persistence hook wrote it, plus a zod schema for its value.
- Only registry-known keys are ever written, and only when their value passes that schema. The file format deliberately lets unknown keys survive parsing, so this filter is what prevents a hand-edited file from writing arbitrary storage keys or out-of-range values.
- Export falls back to the legacy un-namespaced key, because the username migration runs lazily on first mount of each owning hook.
- Streaming settings merge per group rather than replacing the whole map, so groups configured only on the receiving device survive.
- Import writes storage and then reloads, because useUserPersistence reads a key only on mount and StreamingSettingsProvider would otherwise write its stale in-memory state back over the import.
- playbackBandwidthEstimate, frigate-search-history, and live-layout are excluded: the first two are measurements and user data rather than preferences, and live-layout's default is derived from the device.
* merge imported streaming settings per camera instead of per group
* refactor go2rtc docs
* clarify go2rtc language in live
* add export docs
* Move around config items to reflect reference config is now for advanced users
* Remove outdated ipv6 section
* Fix broken links
* live usage docs
* review usage docs
* history usage
* explore usage
* add usage sidebar and move related text to usage sections
* update links
* update live
* move exports to usage
* fix anchors
* Make starts of usage pages consistent
* refactor network config
* Adjustments for review
* Add AI details to history page
* describe alerts vs detections in review usage
* simplify
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Co-authored-by: Nicolas Mowen <nickmowen213@gmail.com>
