fix: preserve the year in default conference end dates

public/asset-manifest.json

@@ -1,6 +1,6 @@
 {
   "core.min.js": "core.6332b3c288.min.js",
-  "vendor.min.js": "vendor.a26a4223c6.min.js",
+  "vendor.min.js": "vendor.bc507e5015.min.js",
   "mermaid.min.js": "mermaid.f848a72d16.min.js",
   "all.min.css": "all.99ce8f3e14.min.css"
 }

public/script/app.js

@@ -3484,7 +3484,7 @@ angular
       const start = new Date();
       start.setDate(1);
       start.setMonth(start.getMonth() + 1);
-      const end = new Date();
+      const end = new Date(start);
       end.setMonth(start.getMonth() + 7, 0);
       $scope.options = {
         startDate: start,

test/frontend-regressions.test.js

@@ -139,4 +139,11 @@ describe("frontend production regressions", function () {
     h.scope.saveDefault(); h.requests.at(-1).reject({ data: { error: "not_connected" } }); await h.flush();
     expect(h.scope.error).to.equal("ERRORS.not_connected");
   });
+  it("keeps the conference end date after the start across December", function () {
+    class December extends Date { constructor(...args) { super(...(args.length ? args : ["2026-12-15T12:00:00Z"])); } }
+    const h = harness(December); h.scope.user = {};
+    h.defs.newConferenceController.at(-1)(h.scope, h.http, {}, {});
+    expect(h.scope.options.startDate.getFullYear()).to.equal(2027);
+    expect(h.scope.options.endDate.getTime()).to.be.greaterThan(h.scope.options.startDate.getTime());
+  });
 });