implement free plan age verification via Stripe SetupIntent; personalize soul demo greeting with user name and timezone

src/js/chat-widget.el

@@ -14,6 +14,10 @@ fn main() -> Void {
   var turnstileVerified = false;
   var isOpen = false;
   var MAX    = 10;
+  var _userName = '';
+  var _userTimezone = (typeof Intl !== 'undefined' && Intl.DateTimeFormat)
+    ? Intl.DateTimeFormat().resolvedOptions().timeZone
+    : '';
 
   // ── Supabase auth state ───────────────────────────────────────────────────
   var supabaseClient = null;
@@ -45,6 +49,11 @@ fn main() -> Void {
   }
 
   function _onWidgetAuthenticated() {
+    // Capture user name for personalized greeting
+    if (_supabaseSession && _supabaseSession.user) {
+      var _meta = _supabaseSession.user.user_metadata || {};
+      _userName = _meta.full_name || _meta.name || _supabaseSession.user.email || '';
+    }
     var authPane = document.getElementById('neuron-demo-auth');
     var gate     = document.getElementById('neuron-demo-gate');
     var msgs     = document.getElementById('neuron-demo-messages');
@@ -60,10 +69,8 @@ fn main() -> Void {
         if (session && session.messages && session.messages.length > 0) {
           session.messages.forEach(function(m) { addMsg(m.role, m.text, true); });
         } else if (!session.greeted) {
-          addMsg('ai', 'Hey. What is on your mind?', true);
-          session.greeted = true;
-          saveSession(session);
-        }
+            _sendIntroGreeting();
+          }
       }
       var inp = document.getElementById('neuron-demo-text');
       if (inp) inp.focus();
@@ -247,10 +254,61 @@ fn main() -> Void {
     }
   }
 
+  function _timeOfDay() {
+    var h = new Date().getHours();
+    if (h < 12) return 'morning';
+    if (h < 17) return 'afternoon';
+    if (h < 21) return 'evening';
+    return 'night';
+  }
+
+  function _sendIntroGreeting() {
+    if (session.greeted) return;
+    session.greeted = true;
+    saveSession(session);
+    var accessToken = (_supabaseSession && _supabaseSession.access_token) ? _supabaseSession.access_token : '';
+    fetch('/api/demo', {
+      method: 'POST',
+      headers: {'Content-Type': 'application/json'},
+      body: JSON.stringify({
+        message: '__intro_phase1__',
+        history: [],
+        cf_token: '',
+        uid: session.uid || '',
+        access_token: accessToken,
+        user_name: _userName,
+        user_timezone: _userTimezone,
+        time_of_day: _timeOfDay(),
+        is_return: session.count > 0 ? 'true' : 'false',
+        activated_nodes: [],
+        engram_node_count: 0,
+        questions_remaining: MAX,
+        is_last_question: false
+      })
+    })
+    .then(function(r) { return r.json(); })
+    .then(function(d) {
+      var reply = d.response || d.reply || d.message || '';
+      if (reply) {
+        addMsg('ai', reply, true);
+        session.messages = session.messages || [];
+        session.messages.push({ role: 'ai', text: reply });
+        saveSession(session);
+      } else {
+        addMsg('ai', 'Hey. What\'s on your mind?', true);
+      }
+    })
+    .catch(function() {
+      addMsg('ai', 'Hey. What\'s on your mind?', true);
+    });
+  }
+
   window.neuronDemoReset = function() {
     if (_headerResetInterval) { clearInterval(_headerResetInterval); _headerResetInterval = null; }
     clearSession();
     session  = { messages: [], count: 0, context: '' };
+    session.uid = 'u' + Date.now().toString(36) + Math.random().toString(36).slice(2, 7);
+    saveSession(session);
     msgCount = 0;
     var msgs  = document.getElementById('neuron-demo-messages');
     if (msgs)  msgs.innerHTML = '';
@@ -258,7 +316,7 @@ fn main() -> Void {
     if (input) { input.disabled = false; input.placeholder = 'Ask me anything...'; }
     var btn   = document.getElementById('neuron-demo-send');
     if (btn)   btn.disabled = false;
-    addMsg('ai', 'Hey. What is on your mind?', true);
+    _sendIntroGreeting();
   };
 
   window.neuronDemoToggle = function() {
@@ -277,9 +335,7 @@ fn main() -> Void {
           if (input) { input.disabled = true; input.placeholder = 'Interaction limit reached'; }
         }
       } else if (!session.greeted) {
-        addMsg('ai', 'Hey. What is on your mind?', true);
-        session.greeted = true;
-        saveSession(session);
+        _sendIntroGreeting();
       }
     }
     var input = document.getElementById('neuron-demo-text');
@@ -315,8 +371,8 @@ fn main() -> Void {
                   if (gate)     gate.style.display     = 'none';
                   if (msgs)     msgs.style.display     = 'flex';
                   if (inputRow) inputRow.style.display = 'flex';
-                  addMsg('ai', 'Hey. What is on your mind?', true);
                   updateCountdown();
+                  _sendIntroGreeting();
                   var inp = document.getElementById('neuron-demo-text');
                   if (inp) inp.focus();
                 },
@@ -454,6 +510,9 @@ fn main() -> Void {
           cf_token:           turnstileVerified && !session._cfSent ? turnstileToken : '',
           uid:                session.uid || '',
           access_token:       accessToken,
+          user_name:          _userName,
+          user_timezone:      _userTimezone,
+          time_of_day:        _timeOfDay(),
           activated_nodes:    activated_nodes,
           engram_node_count:  (session._m && session._m.nodes) ? session._m.nodes.length : 0,
           questions_remaining: questionsRemaining,