Implement caching for classification and account groups in BalanceSheet model and optimize sparkline rendering in views

- Add caching for classification groups and account groups in the BalanceSheet model to improve performance.
- Update views for accountable sparklines to utilize caching for rendered HTML, enhancing load times and reducing database queries.

app/models/balance_sheet.rb

@@ -22,6 +22,7 @@ class BalanceSheet
   end
 
   def classification_groups
+    Rails.cache.fetch(family.build_cache_key("bs_classification_groups")) do
       asset_groups     = account_groups("asset")
       liability_groups = account_groups("liability")
 
@@ -44,10 +45,13 @@ class BalanceSheet
         )
       ]
     end
+  end
 
   def account_groups(classification = nil)
+    Rails.cache.fetch(family.build_cache_key("bs_account_groups_#{classification || 'all'}")) do
       classification_accounts = classification ? totals_query.filter { |t| t.classification == classification } : totals_query
       classification_total    = classification_accounts.sum(&:converted_balance)
+
       account_groups = classification_accounts.group_by(&:accountable_type)
                                               .transform_keys { |k| Accountable.from_type(k) }
 
@@ -83,6 +87,7 @@ class BalanceSheet
         manual_order.index(type_name) || Float::INFINITY
       end
     end
+  end
 
   def net_worth_series(period: Period.last_30_days)
     active_accounts.balance_series(currency: currency, period: period, favorable_direction: "up")

app/views/accountable_sparklines/show.html.erb

@@ -1,4 +1,5 @@
-<%= turbo_frame_tag "#{@accountable.model_name.param_key}_sparkline" do %>
+<% cache Current.family.build_cache_key("#{@accountable.name}_sparkline_html") do %>
+  <%= turbo_frame_tag "#{@accountable.model_name.param_key}_sparkline" do %>
     <div class="flex items-center justify-end gap-1">
       <div class="w-8 h-3">
         <%= render "shared/sparkline", id: dom_id(@accountable, :sparkline_chart), series: @series %>
@@ -8,4 +9,5 @@
                 style: "color: #{@series.trend.color}",
                 class: "font-mono text-right text-xs font-medium text-primary" %>
     </div>
+  <% end %>
 <% end %>

app/views/accounts/sparkline.html.erb

@@ -1,4 +1,5 @@
-<%= turbo_frame_tag dom_id(@account, :sparkline) do %>
+<% cache Current.family.build_cache_key("account_#{@account.id}_sparkline_html") do %>
+  <%= turbo_frame_tag dom_id(@account, :sparkline) do %>
     <div class="flex items-center justify-end gap-1">
       <div class="w-8 h-5">
         <%= render "shared/sparkline", id: dom_id(@account, :sparkline_chart), series: @account.sparkline_series %>
@@ -8,4 +9,5 @@
                 style: "color: #{@account.sparkline_series.trend.color}",
                 class: "font-mono text-right text-xs font-medium text-primary" %>
     </div>
+  <% end %>
 <% end %>