feat: add toast notifications to EmployeeModal for all actions

- Toast success/error on PDF download, negate, restore, hard delete
- Toast success on employee edit and violation amendment via modal callbacks
- Error details from API responses included in error toasts

client/src/components/EmployeeModal.jsx

@@ -6,6 +6,7 @@ import EditEmployeeModal from './EditEmployeeModal';
 import AmendViolationModal from './AmendViolationModal';
 import ExpirationTimeline from './ExpirationTimeline';
 import EmployeeNotes from './EmployeeNotes';
+import { useToast } from './ToastProvider';
 
 const s = {
   overlay: {
@@ -97,6 +98,8 @@ export default function EmployeeModal({ employeeId, onClose }) {
   const [editingEmp, setEditingEmp] = useState(false);
   const [amending,   setAmending]   = useState(null); // violation object
 
+  const toast = useToast();
+
   const load = useCallback(() => {
     setLoading(true);
     Promise.all([
@@ -116,34 +119,54 @@ export default function EmployeeModal({ employeeId, onClose }) {
   useEffect(() => { load(); }, [load]);
 
   const handleDownloadPdf = async (violId, empName, date) => {
-    const response = await axios.get(`/api/violations/${violId}/pdf`, { responseType: 'blob' });
-    const url  = window.URL.createObjectURL(new Blob([response.data], { type: 'application/pdf' }));
-    const link = document.createElement('a');
-    link.href     = url;
-    link.download = `CPAS_${(empName || '').replace(/[^a-z0-9]/gi, '_')}_${date}.pdf`;
-    document.body.appendChild(link);
-    link.click();
-    link.remove();
-    window.URL.revokeObjectURL(url);
+    try {
+      const response = await axios.get(`/api/violations/${violId}/pdf`, { responseType: 'blob' });
+      const url  = window.URL.createObjectURL(new Blob([response.data], { type: 'application/pdf' }));
+      const link = document.createElement('a');
+      link.href     = url;
+      link.download = `CPAS_${(empName || '').replace(/[^a-z0-9]/gi, '_')}_${date}.pdf`;
+      document.body.appendChild(link);
+      link.click();
+      link.remove();
+      window.URL.revokeObjectURL(url);
+      toast.success('PDF downloaded.');
+    } catch (err) {
+      toast.error('PDF generation failed: ' + (err.response?.data?.error || err.message));
+    }
   };
 
   const handleHardDelete = async (id) => {
-    await axios.delete(`/api/violations/${id}`);
-    setConfirmDel(null);
-    load();
+    try {
+      await axios.delete(`/api/violations/${id}`);
+      toast.success('Violation permanently deleted.');
+      setConfirmDel(null);
+      load();
+    } catch (err) {
+      toast.error('Delete failed: ' + (err.response?.data?.error || err.message));
+    }
   };
 
   const handleRestore = async (id) => {
-    await axios.patch(`/api/violations/${id}/restore`);
-    setConfirmDel(null);
-    load();
+    try {
+      await axios.patch(`/api/violations/${id}/restore`);
+      toast.success('Violation restored to active.');
+      setConfirmDel(null);
+      load();
+    } catch (err) {
+      toast.error('Restore failed: ' + (err.response?.data?.error || err.message));
+    }
   };
 
   const handleNegate = async ({ resolution_type, details, resolved_by }) => {
-    await axios.patch(`/api/violations/${negating.id}/negate`, { resolution_type, details, resolved_by });
-    setNegating(null);
-    setConfirmDel(null);
-    load();
+    try {
+      await axios.patch(`/api/violations/${negating.id}/negate`, { resolution_type, details, resolved_by });
+      toast.success('Violation negated.');
+      setNegating(null);
+      setConfirmDel(null);
+      load();
+    } catch (err) {
+      toast.error('Negate failed: ' + (err.response?.data?.error || err.message));
+    }
   };
 
   const tier    = score ? getTier(score.active_points) : null;
@@ -203,7 +226,7 @@ export default function EmployeeModal({ employeeId, onClose }) {
                   </div>
                   <div style={{ ...s.scoreCard, minWidth: '140px' }}>
                     <div style={{ fontSize: '13px', fontWeight: 700, color: tier?.color || '#f8f9fa' }}>
-                      {tier ? tier.label : '–'}
+                      {tier ? tier.label : '—'}
                     </div>
                     <div style={s.scoreLbl}>Current Tier</div>
                   </div>
@@ -405,14 +428,14 @@ export default function EmployeeModal({ employeeId, onClose }) {
         <EditEmployeeModal
           employee={employee}
           onClose={() => setEditingEmp(false)}
-          onSaved={load}
+          onSaved={() => { toast.success('Employee updated.'); load(); }}
         />
       )}
       {amending && (
         <AmendViolationModal
           violation={amending}
           onClose={() => setAmending(null)}
-          onSaved={load}
+          onSaved={() => { toast.success('Violation amended.'); load(); }}
         />
       )}
     </div>