fix(raffle): collect email for github signups

app/controllers/admin/raffles/participants_controller.rb

@@ -285,7 +285,7 @@ def participants_scope
 
         term = "%#{ActiveRecord::Base.sanitize_sql_like(@query)}%"
         participants.left_outer_joins(:user)
-                    .where("users.display_name ILIKE :term OR raffle_participants.code ILIKE :term OR raffle_participants.github_login ILIKE :term", term: term)
+                    .where("users.display_name ILIKE :term OR raffle_participants.code ILIKE :term OR raffle_participants.github_login ILIKE :term OR raffle_participants.github_email ILIKE :term", term: term)
       end
 
       def query_param

app/views/admin/raffles/participants/index.html.erb

@@ -4,20 +4,21 @@
 <h1>Participants</h1>
 
 <%= form_with url: admin_raffles_participants_path, method: :get do %>
-  <%= text_field_tag :query, @query, placeholder: "display name or code", autocomplete: "off" %>
+  <%= text_field_tag :query, @query, placeholder: "name, code, or email", autocomplete: "off" %>
   <%= submit_tag "Search" %>
 <% end %>
 
 <table class="table-data">
   <thead>
-    <tr><th>User</th><th>Code</th><th>Type</th><th>Country</th><th>Eligible</th><th>Referrals</th><th>Joined</th></tr>
+    <tr><th>User</th><th>Code</th><th>Type</th><th>Email</th><th>Country</th><th>Eligible</th><th>Referrals</th><th>Joined</th></tr>
   </thead>
   <tbody>
     <% @participants.each do |participant| %>
       <tr>
         <td><%= link_to participant.display_name, admin_raffles_participant_path(participant) %></td>
         <td><code><%= participant.code %></code></td>
         <td><%= participant.age_group %></td>
+        <td><code><%= participant.github_email || participant.user&.email || "—" %></code></td>
         <td><%= participant.user&.geocoded_country || "—" %></td>
         <td><%= participant.eligible? ? "Yes" : "No" %></td>
         <td><%= @referral_counts[participant.id].to_i %></td>

app/views/admin/raffles/participants/show.html.erb

@@ -12,6 +12,7 @@
     <li>Signed up: <%= @participant.user.created_at.strftime("%Y-%m-%d %H:%M UTC") %></li>
   <% else %>
     <li>GitHub: <%= @participant.github_login %></li>
+    <li>GitHub email: <code><%= @participant.github_email || "—" %></code></li>
   <% end %>
   <li>Eligible: <%= @participant.eligible? ? "Yes" : "No" %></li>
   <% if @participant.fraud_cleared? %>

config/initializers/omniauth.rb

@@ -58,7 +58,7 @@ def callback_url
       ENV["RAFFLE_GITHUB_CLIENT_ID"] || Rails.application.credentials.dig(:github_raffle, :client_id),
       ENV["RAFFLE_GITHUB_CLIENT_SECRET"] || Rails.application.credentials.dig(:github_raffle, :client_secret),
       {
-        scope: "read:user",
+        scope: "read:user user:email",
         callback_path: "/auth/github/callback"
       }
 end

db/migrate/20260710200000_add_github_email_to_raffle_participants.rb

@@ -0,0 +1,5 @@
+class AddGithubEmailToRaffleParticipants < ActiveRecord::Migration[8.0]
+  def change
+    add_column :raffle_participants, :github_email, :string
+  end
+end

engines/raffle/app/controllers/raffle/sessions_controller.rb

@@ -26,6 +26,7 @@ def dev_login
       handle = params[:handle].presence&.parameterize(separator: "_")&.first(40) || "dev-adult"
       participant = Raffle::Participant.find_or_create_by!(github_uid: "dev-#{handle}") do |p|
         p.github_login = handle
+        p.github_email = "#{handle}@example.com"
         p.age_group = :adult
       end
       session[:raffle_participant_id] = participant.id

engines/raffle/app/models/raffle/participant.rb

@@ -46,6 +46,7 @@ def self.from_github(auth)
       participant = find_or_initialize_by(github_uid: uid)
       participant.github_login = login
       participant.github_avatar_url = info&.image
+      participant.github_email = info&.email
       participant.age_group = :adult
       participant.save!
       participant

engines/raffle/app/views/raffle/shared/_dev_panel.html.erb

@@ -44,6 +44,9 @@
   </form>
 
   <% if enrolled? %>
+    <div class="raffle-dev__addrefs">
+      <span class="raffle-dev__presets-label">GitHub email: <code><%= current_participant.github_email || "(none)" %></code></span>
+    </div>
     <div class="raffle-dev__addrefs">
       <span class="raffle-dev__presets-label">Add demo referrals (to you)</span>
       <%= form_with url: dev_referrals_path, method: :post, class: "raffle-dev__refform" do %>