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/rechoir/lib/register.js

@@ -0,0 +1,15 @@
+var resolve = require('resolve');
+
+module.exports = function (cwd, moduleName, register) {
+  var result;
+  try {
+    var modulePath = resolve.sync(moduleName, { basedir: cwd });
+    result = require(modulePath);
+    if (typeof register === 'function') {
+      register(result);
+    }
+  } catch (e) {
+    result = e;
+  }
+  return result;
+};