Fix PS module stuck-Next bug: validate() on number-input oninput (typing into empty PS join/service/salary step never enabled Next; real users were stuck) + click-through regression test (smoke 74->88, EN+FR)

site/app.js

@@ -369,13 +369,13 @@
     });
     var f1 = $('#f1');
     if (f1) {
-      f1.oninput = function () { s.set(f1.value); save(); liveUpdate(); if (s.type === 'slider') $('#sv').textContent = s.fmt(+f1.value); };
+      f1.oninput = function () { s.set(f1.value); save(); liveUpdate(); validate(s); if (s.type === 'slider') $('#sv').textContent = s.fmt(+f1.value); };
       if (s.type === 'slider') f1.oninput();
       /* Fix 8: Enter on a number step = press Next (when enabled). */
       if (s.type === 'number') f1.onkeydown = function (e) { if (e.key === 'Enter' && !btnNext.disabled) btnNext.click(); };
     }
     stepBody.querySelectorAll('input[type=number][data-k]').forEach(function (inp) {
-      inp.oninput = function () { s.set(inp.dataset.k, inp.value); save(); liveUpdate(); };
+      inp.oninput = function () { s.set(inp.dataset.k, inp.value); save(); liveUpdate(); validate(s); };
     });
     stepBody.querySelectorAll('input[type=range][data-k]').forEach(function (inp) {
       inp.oninput = function () {