Move the locate-me button into the top-left control stack

GeolocateControl was alone at bottom-right while Home/zoom/base-map were
grouped top-left — split across two corners instead of one stack like
the National Park Service's own map controls. Moved it in, between zoom
and the base-map button.

docs/architecture.adoc

@@ -141,15 +141,16 @@ sits top-left on the map, pinned to `CENTER`/`ZOOM` explicitly rather
 than its own fallback (the view at construction time, which would just
 be wherever a loaded permalink happened to point). It resets to the
 app's default view, not the visitor's own location — that's
-`GeolocateControl`, a separate button at bottom-right.
+`GeolocateControl`, a separate button in the same stack (below).
 
 That Home button is the top of a small top-left stack — Home, zoom
 in/out (`NavigationControl`, `showCompass: false` since this map never
-rotates), and a "Base map" button — matching the National Park
+rotates), locate-me (`GeolocateControl`), and a "Base map" button —
-Service's own map control layout (grouped together on the map itself,
+matching the National Park Service's own map control layout (grouped
-rather than split between the map and a side panel). The last of
+together on the map itself, rather than split across corners or
-those, `MapLayersButton` (`public/js/map.js`), is a second entry point
+between the map and a side panel). The last of those,
-into the exact same Online/Offline panel `LayerToggleControl` already
+`MapLayersButton` (`public/js/map.js`), is a second entry point into
+the exact same Online/Offline panel `LayerToggleControl` already
 manages in the page's own sidebar — both call the same
 `LayerToggleControl#toggle()`, so there's one source of truth for the
 panel's open/closed state either way.

public/js/map.js

@@ -195,17 +195,9 @@ const map = new MaplibreMap({
   hash: "map",
 });
 
-map.addControl(
+// A compact top-left stack — Home, zoom, locate-me, base map — matching
-  new GeolocateControl({
+// the National Park Service's own map control layout, all grouped
-    positionOptions: { enableHighAccuracy: true },
+// together rather than split across corners. Added in this order since
-    trackUserLocation: true,
-    showAccuracyCircle: true,
-  }),
-  "bottom-right",
-);
-
-// A compact top-left stack — Home, zoom, base map — matching the National
-// Park Service's own map control layout. Added in this order since
 // MapLibre stacks same-position controls in add order.
 //
 // homePosition/zoom pinned to the app's own default rather than left to the
@@ -214,11 +206,19 @@ map.addControl(
 // "current view" and "the default view" are no longer the same thing, and
 // a home button that resets to wherever you happened to load the page
 // wouldn't be a home button. This is *not* "go to my location" — that's
-// GeolocateControl, above.
+// GeolocateControl, below.
 map.addControl(new HomeButton({ homePosition: CENTER, zoom: ZOOM }), "top-left");
 // showCompass: false — this map never rotates, so a bearing-reset button
 // (NavigationControl's default third button) would just be dead weight.
 map.addControl(new NavigationControl({ showCompass: false }), "top-left");
+map.addControl(
+  new GeolocateControl({
+    positionOptions: { enableHighAccuracy: true },
+    trackUserLocation: true,
+    showAccuracyCircle: true,
+  }),
+  "top-left",
+);
 
 const sidebar = document.getElementById("sidebar");