Fix New Person flow: redirect to new cluster, show hero face, detect duplicate names

After moving a face to "New Person", the user is now taken directly to
that cluster's detail page. If it's a single unnamed cluster, the face
is shown prominently at the top. Typing an existing name on the name
form triggers a confirm dialog: OK merges into the existing person's
cluster, Cancel saves as a new separate person with the same name.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 53 insertions, 3 deletions

diff --git a/views/admin/person_detail.erb b/views/admin/person_detail.erb
index 77f27b7..7a1ea0a 100644
--- a/views/admin/person_detail.erb
+++ b/views/admin/person_detail.erb
@@ -26,11 +26,32 @@
   <% unless @is_pool %>
   <%# ── Name ──────────────────────────────────────────────────────────────── %>
   <section style="margin-bottom:20px">
-    <form method="post" action="/admin/people/<%= ERB::Util.url_encode(@uuid) %>" class="name-form">
-      <input type="text" name="name" value="<%= ERB::Util.html_escape(@name.to_s) %>"
-             placeholder="Enter name…" class="name-input" style="max-width:300px">
+    <% if @count == 1 && !@name %>
+      <% m = @members.first; rel = m['rel']; box = m['box'] %>
+      <% parts = rel.split('/'); fname = parts.last; dir_rel = parts[0..-2].join('/') %>
+      <% album_url = dir_rel.empty? ? '/browse/' : "/browse/#{ERB::Util.html_escape(dir_rel)}" %>
+      <div class="new-person-hero">
+        <div class="face-detail-thumb" data-thumb="/thumb/<%= ERB::Util.html_escape(rel) %>">
+          <a href="<%= album_url %>?photo=<%= ERB::Util.url_encode(fname) %>" target="_blank">
+            <img src="/face/<%= ERB::Util.html_escape(rel) %>?box=<%= ERB::Util.html_escape(box.join(',')) %>"
+                 width="140" height="140">
+          </a>
+        </div>
+        <p class="update-hint" style="margin-top:8px">Hover to see full photo &middot; Click to open in album</p>
+      </div>
+    <% end %>
+    <form id="name-form" method="post" action="/admin/people/<%= ERB::Util.url_encode(@uuid) %>" class="name-form">
+      <input type="text" name="name" id="name-input"
+             value="<%= ERB::Util.html_escape(@name.to_s) %>"
+             placeholder="Enter name…" class="name-input" style="max-width:300px"
+             autocomplete="off">
       <button type="submit" class="btn">Save Name</button>
     </form>
+    <form id="merge-into-form" method="post"
+          action="/admin/people/<%= ERB::Util.url_encode(@uuid) %>/merge"
+          style="display:none">
+      <input type="hidden" name="into" id="merge-into-uuid">
+    </form>
   </section>
 
   <%# ── Merge entire cluster ──────────────────────────────────────────────── %>
@@ -131,6 +152,35 @@
     preview.style.top  = y + 'px';
   }
 
+  // Duplicate name check
+  var existingNames = <%= @existing_names_json || '[]' %>;
+  var nameForm  = document.getElementById('name-form');
+  var nameInput = document.getElementById('name-input');
+  if (nameForm && nameInput) {
+    var forceNew = false;
+    nameForm.addEventListener('submit', function (e) {
+      if (forceNew) return;
+      var val = nameInput.value.trim();
+      if (!val) return;
+      var match = existingNames.find(function (p) {
+        return p.name.toLowerCase() === val.toLowerCase();
+      });
+      if (match) {
+        e.preventDefault();
+        var msg = '"' + match.name + '" already exists.\n\n'
+                + 'OK — add this photo to ' + match.name + "'s cluster\n"
+                + 'Cancel — create a new separate person named "' + val + '"';
+        if (confirm(msg)) {
+          document.getElementById('merge-into-uuid').value = match.uuid;
+          document.getElementById('merge-into-form').submit();
+        } else {
+          forceNew = true;
+          nameForm.submit();
+        }
+      }
+    });
+  }
+
   document.querySelectorAll('.face-detail-thumb').forEach(function (el) {
     el.querySelector('img').style.cursor = 'zoom-in';
     el.addEventListener('mouseenter', function (e) {