Fix European trip return heuristic for weekend location tracking

Adjust European short trip heuristic from >3 days to >1 day to correctly
detect when user has returned home from European trips. This fixes the
April 29-30, 2023 case where the location incorrectly showed "Sankt Georg, Hamburg"
instead of "Bristol" when the user was free (no events scheduled) after
the foss-north trip ended on April 27.

The previous logic required more than 3 days to pass before assuming
return home from European countries, but for short European trips by
rail/ferry, users typically return within 1-2 days.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

node_modules/leaflet/src/geo/crs/CRS.EPSG4326.js

@@ -0,0 +1,23 @@
+import {Earth} from './CRS.Earth';
+import {LonLat} from '../projection/Projection.LonLat';
+import {toTransformation} from '../../geometry/Transformation';
+import * as Util from '../../core/Util';
+
+/*
+ * @namespace CRS
+ * @crs L.CRS.EPSG4326
+ *
+ * A common CRS among GIS enthusiasts. Uses simple Equirectangular projection.
+ *
+ * Leaflet 1.0.x complies with the [TMS coordinate scheme for EPSG:4326](https://wiki.osgeo.org/wiki/Tile_Map_Service_Specification#global-geodetic),
+ * which is a breaking change from 0.7.x behaviour.  If you are using a `TileLayer`
+ * with this CRS, ensure that there are two 256x256 pixel tiles covering the
+ * whole earth at zoom level zero, and that the tile coordinate origin is (-180,+90),
+ * or (-180,-90) for `TileLayer`s with [the `tms` option](#tilelayer-tms) set.
+ */
+
+export var EPSG4326 = Util.extend({}, Earth, {
+	code: 'EPSG:4326',
+	projection: LonLat,
+	transformation: toTransformation(1 / 180, 1, -1 / 180, 0.5)
+});