Transaction rules engine V1 (#1900)

* Domain model sketch

* Scaffold out rules domain

* Migrations

* Remove existing data enrichment for clean slate

* Sketch out business logic and basic tests

* Simplify rule scope building and action executions

* Get generator working again

* Basic implementation + tests

* Remove manual merchant management (rules will replace)

* Revert "Remove manual merchant management (rules will replace)"

This reverts commit 83dcbd9ff0aa7bbee211796b71aa48b71df5e57e.

* Family and Provider merchants model

* Fix brakeman warnings

* Fix notification loader

* Update notification position

* Add Rule action and condition registries

* Rule form with compound conditions and tests

* Split out notification types, add CTA type

* Rules form builder and Stimulus controller

* Clean up rule registry domain

* Clean up rules stimulus controller

* CTA message for rule when user changes transaction category

* Fix tests

* Lint updates

* Centralize notifications in Notifiable concern

* Implement category rule prompts with auto backoff and option to disable

* Fix layout bug caused by merge conflict

* Initialize rule with correct action for category CTA

* Add rule deletions, get rules working

* Complete dynamic rule form, split Stimulus controllers by resource

* Fix failing tests

* Change test password to avoid chromium conflicts

* Update integration tests

* Centralize all test password references

* Add re-apply rule action

* Rule confirm modal

* Run migrations

* Trigger rule notification after inline category updates

* Clean up rule styles

* Basic attribute locking for rules

* Apply attribute locks on user edits

* Log data enrichments, only apply rules to unlocked attributes

* Fix merge errors

* Additional merge conflict fixes

* Form UI improvements, ignore attribute locks on manual rule application

* Batch AI auto-categorization of transactions

* Auto merchant detection, ai enrichment in batches

* Fix Plaid merchant assignments

* Plaid category matching

* Cleanup 1

* Test cleanup

* Remove stale route

* Fix desktop chat UI issues

* Fix mobile nav styling issues

app/controllers/concerns/notifiable.rb

@@ -0,0 +1,58 @@
+module Notifiable
+  extend ActiveSupport::Concern
+
+  included do
+    helper_method :render_flash_notifications
+    helper_method :flash_notification_stream_items
+  end
+
+  private
+    def render_flash_notifications
+      notifications = flash.flat_map { |type, data| resolve_notifications(type, data) }.compact
+
+      view_context.safe_join(
+        notifications.map { |notification| view_context.render(**notification) }
+      )
+    end
+
+    def flash_notification_stream_items
+      items = flash.flat_map do |type, data|
+        notifications = resolve_notifications(type, data)
+
+        if type == "cta"
+          notifications.map { |notification| turbo_stream.replace("cta", **notification) }
+        else
+          notifications.map { |notification| turbo_stream.append("notification-tray", **notification) }
+        end
+      end.compact
+
+      # If rendering flash notifications via stream, we mark them as used to avoid
+      # them being rendered again on the next page load
+      flash.clear
+
+      items
+    end
+
+    def resolve_cta(cta)
+      case cta[:type]
+      when "category_rule"
+        { partial: "rules/category_rule_cta", locals: { cta: } }
+      end
+    end
+
+    def resolve_notifications(type, data)
+      case type
+      when "alert"
+        [ { partial: "shared/notifications/alert", locals: { message: data } } ]
+      when "cta"
+        [ resolve_cta(data) ]
+      when "loading"
+        [ { partial: "shared/notifications/loading", locals: { message: data } } ]
+      when "notice"
+        messages = Array(data)
+        messages.map { |message| { partial: "shared/notifications/notice", locals: { message: message } } }
+      else
+        []
+      end
+    end
+end