bingo: planned status and capacity type

"MW" on the card mixed IT load, connected power, total site power,
design capacity and even MVA (Oxygen, Sber Yuzhny Port). Record which
one a figure is in a new mw_type column; the dialog tags the number
("64 MW · design") and MVA replaces the unit, while cells keep the bare
figure to stay readable. Add a "planned" status for projects not yet
under construction; like "building", it is left out of the operational
view.

Assisted-by: Claude:opus-5

views/admin/bingo/index.erb

@@ -97,7 +97,7 @@
                     <td><% if dc.photo_file %><img src="/admin/bingo/p/<%= dc.photo_file(480) %>" alt="" width="64" height="40" style="object-fit: cover" /><% else %>—<% end %></td>
                     <td><%= dc.name_ru %><br /><span class="optional"><%= dc.city_ru %></span></td>
                     <td><%= dc.operator %></td>
-                    <td class="num mono"><%= dc.mw %></td>
+                    <td class="num mono"><%= dc.mw %><%= " #{dc.mw_type}" if dc.mw_type %></td>
                     <td><%= dc.status %></td>
                     <td class="num mono"><%= dc.incidents.size %></td>
                     <td class="actions"><a href="/admin/bingo/dc/<%= dc.id %>">edit</a></td>