Implantação da geração de mensagem de forma livre e mudança na engine de mensagem

app/views/admin/contatos/_form.html.erb

@@ -0,0 +1,52 @@
+<%= form_with model: [:admin, contato], data: { turbo: false }, class: 'space-y-5' do |f| %>
+  <% if contato.errors.any? %>
+    <div class="bg-red-500/10 border border-red-500/30 rounded-xl px-4 py-3 text-red-300 text-sm">
+      <ul class="list-disc list-inside space-y-1">
+        <% contato.errors.full_messages.each do |msg| %><li><%= msg %></li><% end %>
+      </ul>
+    </div>
+  <% end %>
+
+  <div>
+    <%= f.label :nome, class: 'block text-gray-400 text-sm mb-1' %>
+    <%= f.text_field :nome, required: true,
+        class: 'w-full bg-[#1a1a1a] border border-white/10 rounded-xl text-white text-sm px-3 py-2.5 focus:outline-none focus:border-orange-500' %>
+  </div>
+
+  <div class="grid grid-cols-1 sm:grid-cols-2 gap-4">
+    <div>
+      <%= f.label :telefone, 'WhatsApp', class: 'block text-gray-400 text-sm mb-1' %>
+      <%= f.text_field :telefone, placeholder: '(11) 92005-1157',
+          class: 'w-full bg-[#1a1a1a] border border-white/10 rounded-xl text-white text-sm px-3 py-2.5 focus:outline-none focus:border-orange-500' %>
+      <p class="text-xs text-gray-500 mt-1">Pode digitar com máscara — é normalizado ao salvar.</p>
+    </div>
+    <div>
+      <%= f.label :email, 'E-mail', class: 'block text-gray-400 text-sm mb-1' %>
+      <%= f.email_field :email,
+          class: 'w-full bg-[#1a1a1a] border border-white/10 rounded-xl text-white text-sm px-3 py-2.5 focus:outline-none focus:border-orange-500' %>
+    </div>
+  </div>
+
+  <div>
+    <%= f.label :grupo_contato_id, 'Grupo', class: 'block text-gray-400 text-sm mb-1' %>
+    <%= f.collection_select :grupo_contato_id, @grupos, :id, :nome, { include_blank: 'Sem grupo (não recebe nada)' },
+        class: 'w-full bg-[#1a1a1a] border border-white/10 rounded-xl text-white text-sm px-3 py-2.5 focus:outline-none focus:border-orange-500' %>
+    <p class="text-xs text-gray-500 mt-1">É o grupo que define quais eventos este contato recebe.</p>
+  </div>
+
+  <div>
+    <%= f.label :observacao, 'Observação', class: 'block text-gray-400 text-sm mb-1' %>
+    <%= f.text_field :observacao,
+        class: 'w-full bg-[#1a1a1a] border border-white/10 rounded-xl text-white text-sm px-3 py-2.5 focus:outline-none focus:border-orange-500' %>
+  </div>
+
+  <label class="flex items-center gap-2 text-sm text-gray-300">
+    <%= f.check_box :ativo, class: 'rounded border-white/20 bg-[#1a1a1a] text-orange-500' %>
+    Ativo
+  </label>
+
+  <div class="flex items-center gap-3">
+    <%= f.submit 'Salvar', class: 'px-4 py-2.5 rounded-xl text-sm font-semibold bg-orange-500 text-black hover:bg-orange-400 cursor-pointer' %>
+    <%= link_to 'Cancelar', admin_contatos_path, data: { turbo: false }, class: 'text-gray-400 hover:text-white text-sm' %>
+  </div>
+<% end %>