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/eye-dashed.mjs

@@ -0,0 +1,36 @@
+/**
+ * @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: "M13.054 18.946a11 11 0 0 1-2.11 0", key: "1lgjj0" }],
+  ["path", { d: "M13.054 5.054a11 11 0 0 0-2.11-.001", key: "f7voaa" }],
+  ["path", { d: "M17.072 6.274a11 11 0 0 1 1.753 1.173", key: "1rga24" }],
+  ["path", { d: "M18.825 16.552a11 11 0 0 1-1.753 1.174", key: "jfvai2" }],
+  [
+    "path",
+    {
+      d: "M2.514 13.303a11 11 0 0 1-.452-.954 1 1 0 0 1 0-.697 11 11 0 0 1 .45-.955",
+      key: "1deed4"
+    }
+  ],
+  [
+    "path",
+    {
+      d: "M21.485 10.697a11 11 0 0 1 .453.955 1 1 0 0 1 0 .697 11 11 0 0 1-.453.954",
+      key: "1k4xil"
+    }
+  ],
+  ["path", { d: "M5.173 7.448a11 11 0 0 1 1.753-1.174", key: "mwd8rq" }],
+  ["path", { d: "M6.926 17.726a11 11 0 0 1-1.753-1.174", key: "15rpim" }],
+  ["circle", { cx: "12", cy: "12", r: "3", key: "1v7zrd" }]
+];
+const EyeDashed = createLucideIcon("eye-dashed", __iconNode);
+
+export { __iconNode, EyeDashed as default };
+//# sourceMappingURL=eye-dashed.mjs.map