Add sync error logging, extend error flash, fix unload saves

- Log workforce sync errors to backend stdout so they appear in docker logs
- Extend error flash from 5s to 15s so errors are readable
- Replace sendBeacon (POST-only) with keepalive fetch (PUT) on unload —
  sendBeacon was hitting 404s on all three unload saves

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/node_modules/lucide-react/dist/esm/icons/rose.mjs

@@ -0,0 +1,29 @@
+/**
+ * @license lucide-react v1.24.0 - ISC
+ *
+ * This source code is licensed under the ISC license.
+ * See the LICENSE file in the root directory of this source tree.
+ */
+
+import createLucideIcon from '../createLucideIcon.mjs';
+
+const __iconNode = [
+  ["path", { d: "M17 10h-1a4 4 0 1 1 4-4v.534", key: "7qf5zm" }],
+  [
+    "path",
+    { d: "M17 6h1a4 4 0 0 1 1.42 7.74l-2.29.87a6 6 0 0 1-5.339-10.68l2.069-1.31", key: "1et29u" }
+  ],
+  [
+    "path",
+    {
+      d: "M4.5 17c2.8-.5 4.4 0 5.5.8s1.8 2.2 2.3 3.7c-2 .4-3.5.4-4.8-.3-1.2-.6-2.3-1.9-3-4.2",
+      key: "kiv2lz"
+    }
+  ],
+  ["path", { d: "M9.77 12C4 15 2 22 2 22", key: "h28rw0" }],
+  ["circle", { cx: "17", cy: "8", r: "2", key: "1330xn" }]
+];
+const Rose = createLucideIcon("rose", __iconNode);
+
+export { __iconNode, Rose as default };
+//# sourceMappingURL=rose.mjs.map