Account:: namespace simplifications and cleanup (#2110)

* Flatten Holding model

* Flatten balance model

* Entries domain renames

* Fix valuations reference

* Fix trades stream

* Fix brakeman warnings

* Fix tests

* Replace existing entryable type references in DB

app/views/valuations/index.html.erb

@@ -0,0 +1,35 @@
+<%= turbo_frame_tag dom_id(@account, "valuations") do %>
+  <div class="bg-container space-y-4 p-5 shadow-border-xs rounded-xl">
+    <div class="flex items-center justify-between">
+      <%= tag.h2 t(".valuations"), class: "font-medium text-lg" %>
+      <%= link_to new_valuation_path(@account),
+                  data:  { turbo_frame: dom_id(@account.entries.valuations.new) },
+                  class: "flex gap-1 font-medium items-center bg-gray-50 text-primary p-2 rounded-lg" do %>
+        <%= lucide_icon("plus", class: "w-5 h-5 text-primary") %>
+        <%= tag.span t(".new_entry"), class: "text-sm" %>
+      <% end %>
+    </div>
+
+    <div class="rounded-xl bg-container-inset p-1">
+      <div class="grid grid-cols-10 items-center uppercase text-xs font-medium text-secondary px-4 py-2">
+        <%= tag.p t(".date"), class: "col-span-5" %>
+        <%= tag.p t(".value"), class: "col-span-2 justify-self-end" %>
+        <%= tag.p t(".change"), class: "col-span-2 justify-self-end" %>
+        <%= tag.div class: "col-span-1" %>
+      </div>
+
+      <div class="rounded-lg bg-container shadow-border-xs">
+        <%= turbo_frame_tag dom_id(@account.entries.valuations.new) %>
+
+        <% if @entries.any? %>
+          <%= render partial: "valuations/valuation",
+                     collection:      @entries,
+                     as:              :entry,
+                     spacer_template: "entries/ruler" %>
+        <% else %>
+          <p class="text-secondary text-sm p-4"><%= t(".no_valuations") %></p>
+        <% end %>
+      </div>
+    </div>
+  </div>
+<% end %>