Site: the user guide (phase 2): the basics, one page per App, Settings and Updates

Eleven pages under /guide/, written from the README, the milestone documents
and the Apps' own source: the keys, the Launcher, the Status Bar and the first
start; the LoRa Scanner, GNSS, Gemini, IRC, Wi-Fi tools, Notes, Storage and
System; Settings (with Wi-Fi) and Updates. Real screenshots where the site has
them, a Guide link in the navigation, and the home page points to it.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EhqxQ49eCju4CzKYNjZzwT

site/content/guide/gnss.md

@@ -0,0 +1,30 @@
++++
+title = "GNSS"
+description = "Where you are and which satellites you can see, from the Cap's receiver, with Tracks saved to the SD card as GPX."
+weight = 3
+[extra]
+tag = "GNSS"
+screens = ["sky.png"]
++++
+
+GNSS needs the **Cap LoRa-1262**, an antenna with a view of the sky, and **Settings → GNSS** switched **On**. Otherwise the App says `GNSS is off` (or `paused`, when "Pause GNSS for LoRa" has put the receiver on standby while the radio listens). A first fix outdoors can take a while: the App says how long it has been searching.
+
+## Position
+
+The first view shows the fix (`No Fix`, `2D Fix` or `3D Fix`, and how many satellites it uses), then:
+
+- **Lat** and **Lon**, in decimal degrees or degrees, minutes and seconds (**Settings → Coordinates**);
+- the **Locator**, the Maidenhead grid square;
+- **Altitude**, **Speed** and the direction you are moving;
+- **HDOP**, the horizontal precision: a smaller number is better;
+- the **Time**, in UTC.
+
+Once there is a fix, the device's clock follows it.
+
+## Sky
+
+<kbd>Tab</kbd> switches between Position and **Sky**: a circle with N, E, S and W, where each satellite is a dot, coloured by constellation, and filled when the receiver uses it. A legend counts, for each constellation (GPS, GLONASS, Galileo, BeiDou), the satellites used and in view.
+
+## Tracks
+
+<kbd>r</kbd> starts recording a **Track**: the route is saved as a **GPX** file on the SD card, in `/gnss/tracks` (named by date and time), and the Status Bar shows `REC`. Press <kbd>r</kbd> again to stop. A Track keeps recording with the App closed. It needs a card and a clock (a fix or Wi-Fi sets it); if it cannot start, the App says why: `GNSS is off`, `No SD card` or `Waiting for the time`. The [Storage App](/guide/storage/) opens a `.gpx` file and shows its points, start, duration and distance.