Restructure omni services and add Chatwoot research snapshot

research/chatwoot/db/migrate/20250929105219_create_companies.rb

@@ -0,0 +1,14 @@
+class CreateCompanies < ActiveRecord::Migration[7.1]
+  def change
+    create_table :companies do |t|
+      t.string :name, null: false
+      t.string :domain
+      t.text :description
+      t.references :account, null: false
+
+      t.timestamps
+    end
+    add_index :companies, [:name, :account_id]
+    add_index :companies, [:domain, :account_id]
+  end
+end