Show only the primary sector on the people index

Listing every sector made the search table noisy. Show just the primary
sector as the darker-green starred chip — the same treatment used on the
profile and recipients page — keeping the index scannable while the full
set stays on the profile.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: maebeale

app/views/people/people_results.html.erb

@@ -37,13 +37,15 @@
                 </td>
                 <!-- Sectors -->
                 <td class="px-4 py-2 text-sm text-gray-800">
-                  <% sectors = person.sectorable_items.sort_by { |si| [ si.is_primary? ? 0 : 1, si.sector&.name.to_s.downcase ] } %>
+                  <%# Index stays scannable: show only the primary sector(s) as the
+                      darker-green starred chip; the full set lives on the profile. %>
+                  <% sectors = person.sectorable_items.select(&:is_primary?).sort_by { |si| si.sector&.name.to_s.downcase } %>
                   <% if sectors.any? %>
                     <div class="flex flex-wrap gap-2">
                       <% sectors.each do |si| %>
                         <%= render "sectors/tagging_label",
                                    sector: si.sector,
-                                   is_primary: si.is_primary?,
+                                   is_primary: true,
                                    display_leader: true,
                                    is_leader: si.is_leader %>
                       <% end %>