Add face and cluster deletion to people admin

On the cluster detail page: "Remove face" option in each face's move
dropdown removes it from the cluster entirely; "Delete cluster" button
(red, with confirmation) removes the whole cluster from people.json.
Moving the last face out of a cluster also auto-deletes it.

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

1 files changed, 14 insertions, 1 deletions

diff --git a/app.rb b/app.rb
index 7ce9d22..192814a 100644
--- a/app.rb
+++ b/app.rb
@@ -939,7 +939,9 @@ post '/admin/people/:uuid/move' do
   halt 404 unless member
   people[src]['members'].delete(member)
 
-  if to == 'new'
+  if to == 'remove'
+    # just drop it — already deleted from src above
+  elsif to == 'new'
     new_uid = SecureRandom.uuid
     people[new_uid] = { 'name' => nil, 'slug' => nil, 'members' => [member] }
   else
@@ -947,12 +949,23 @@ post '/admin/people/:uuid/move' do
     people[to]['members'] << member
   end
 
+  people.delete(src) if people[src] && people[src]['members'].empty?
   data['people'] = people
   atomic_write(PEOPLE_PATH, JSON.pretty_generate(data))
 
   people[src] ? redirect("/admin/people/#{src}") : redirect('/admin/people')
 end
 
+post '/admin/people/:uuid/delete' do
+  require_admin!
+  data   = load_people_data
+  people = data['people'] || {}
+  people.delete(params[:uuid])
+  data['people'] = people
+  atomic_write(PEOPLE_PATH, JSON.pretty_generate(data))
+  redirect '/admin/people'
+end
+
 post '/admin/people/:uuid/merge' do
   require_admin!
   src  = params[:uuid]