GNSS App: a Compass, with Places to be led back to and a level

Tab goes on from the Sky to a third view (issue #16): a rose that turns
with the device, the heading, where north came from and how long ago,
the sun on the rose, and a level. m marks where you stand as a Place,
t picks one as the target: an arrowhead on the rose, its distance and
bearing. The sensor's directions were checked by hand on the device.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0162FokPdvY2KsS4NBfwyWPk

site/data/keys.toml

@@ -142,10 +142,30 @@ rows = [
 id = "gnss"
 title = "GNSS"
 rows = [
-    ["Tab", "the position, or the sky"],
+    ["Tab", "position, sky, compass"],
     ["r", "record a Track, or stop it"],
 ]
 
+[[scope]]
+id = "gnss-compass"
+title = "GNSS, the compass"
+rows = [
+    ["Tab", "position, sky, compass"],
+    ["m", "mark this place"],
+    ["t", "the target: a place"],
+    ["s", "aimed at the sun: north"],
+    ["r", "record a Track, or stop it"],
+]
+
+[[scope]]
+id = "gnss-places"
+title = "GNSS, the places"
+rows = [
+    ["; .", "up, down"],
+    ["Enter", "the target"],
+    ["d  Del", "remove the place"],
+]
+
 [[scope]]
 id = "gemini"
 title = "Gemini, a page"