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/controllers/valuations_controller.rb

@@ -0,0 +1,49 @@
+class ValuationsController < ApplicationController
+  include EntryableResource
+
+  def create
+    account = Current.family.accounts.find(params.dig(:entry, :account_id))
+    @entry = account.entries.new(entry_params.merge(entryable: Valuation.new))
+
+    if @entry.save
+      @entry.sync_account_later
+
+      flash[:notice] = "Balance created"
+
+      respond_to do |format|
+        format.html { redirect_back_or_to account_path(@entry.account) }
+        format.turbo_stream { stream_redirect_back_or_to(account_path(@entry.account)) }
+      end
+    else
+      render :new, status: :unprocessable_entity
+    end
+  end
+
+  def update
+    if @entry.update(entry_params)
+      @entry.sync_account_later
+
+      respond_to do |format|
+        format.html { redirect_back_or_to account_path(@entry.account), notice: "Balance updated" }
+        format.turbo_stream do
+          render turbo_stream: [
+            turbo_stream.replace(
+              dom_id(@entry, :header),
+              partial: "valuations/header",
+              locals: { entry: @entry }
+            ),
+            turbo_stream.replace(@entry)
+          ]
+        end
+      end
+    else
+      render :show, status: :unprocessable_entity
+    end
+  end
+
+  private
+    def entry_params
+      params.require(:entry)
+            .permit(:name, :enriched_name, :date, :amount, :currency, :notes)
+    end
+end