feat: silent email rate limit — no count/cooldown shown to users

frontend/src/pages/Timesheet.jsx

@@ -254,7 +254,7 @@ export default function Timesheet() {
     try {
       const res = await api.post(`/timesheets/${timesheetId}/email`);
       setEmailStatus(s => ({ ...s, count: res.data.count, allowed: res.data.remaining > 0, cooldownMs: 30 * 60 * 1000 }));
-      setEmailResult({ ok: true, msg: `Sent! (${res.data.count}/${res.data.max} sends used for this week)` });
+      setEmailResult({ ok: true, msg: 'Sent to Office!' });
       setEmailConfirm(false);
     } catch (err) {
       setEmailResult({ ok: false, msg: err.response?.data?.error || 'Failed to send email' });
@@ -388,19 +388,15 @@ export default function Timesheet() {
               <div className="flex-1 rounded-xl border border-emerald-200 dark:border-emerald-500/30 bg-emerald-50 dark:bg-emerald-500/5 p-3 space-y-2">
                 <p className="text-xs text-emerald-700 dark:text-emerald-400 font-medium text-center">
                   Send to Office@CoastalContractingFL.com?
-                  {emailStatus && (
-                    <span className="block text-emerald-600/70 dark:text-emerald-500/70 mt-0.5">
-                      {emailStatus.count}/{emailStatus.max} sends used this week
-                      {emailStatus.cooldownMs > 0 ? ` · available in ${Math.ceil(emailStatus.cooldownMs / 60000)}m` : ''}
-                    </span>
-                  )}
                 </p>
                 {emailStatus && !emailStatus.allowed ? (
-                  <p className="text-xs text-red-500 text-center">
-                    {emailStatus.count >= emailStatus.max
-                      ? `Max ${emailStatus.max} sends reached for this timesheet`
-                      : `Please wait ${Math.ceil(emailStatus.cooldownMs / 60000)} min before sending again`}
-                  </p>
+                  <div className="flex gap-2">
+                    <button disabled className="flex-1 py-1.5 rounded-lg bg-emerald-500 text-white text-xs font-semibold opacity-40 flex items-center justify-center gap-1">
+                      <Mail size={12} />
+                      Send
+                    </button>
+                    <button onClick={() => { setEmailConfirm(false); setEmailResult(null); }} className="flex-1 py-1.5 rounded-lg bg-gray-100 dark:bg-gray-800 text-gray-600 dark:text-gray-400 text-xs font-semibold">Cancel</button>
+                  </div>
                 ) : (
                   <div className="flex gap-2">
                     <button