Restructure omni services and add Chatwoot research snapshot

research/chatwoot/db/migrate/20251003091242_create_captain_custom_tools.rb

@@ -0,0 +1,22 @@
+class CreateCaptainCustomTools < ActiveRecord::Migration[7.1]
+  def change
+    create_table :captain_custom_tools do |t|
+      t.references :account, null: false, index: true
+      t.string :slug, null: false
+      t.string :title, null: false
+      t.text :description
+      t.string :http_method, null: false, default: 'GET'
+      t.text :endpoint_url, null: false
+      t.text :request_template
+      t.text :response_template
+      t.string :auth_type, default: 'none'
+      t.jsonb :auth_config, default: {}
+      t.jsonb :param_schema, default: []
+      t.boolean :enabled, default: true, null: false
+
+      t.timestamps
+    end
+
+    add_index :captain_custom_tools, [:account_id, :slug], unique: true
+  end
+end