Add AI cache clearing infrastructure

Add ClearAiCacheJob for async cache clearing with low priority. Extend Enrichable concern with clear_ai_cache methods to unlock AI-enriched attributes and delete AI enrichment records. Trigger automatic cache clearing when OpenAI model setting changes.

app/models/concerns/enrichable.rb

@@ -15,6 +15,8 @@ module Enrichable
   InvalidAttributeError = Class.new(StandardError)
 
   included do
+    has_many :data_enrichments, as: :enrichable, dependent: :destroy
+
     scope :enrichable, ->(attrs) {
       attrs = Array(attrs).map(&:to_s)
       json_condition = attrs.each_with_object({}) { |attr, hash| hash[attr] = true }
@@ -22,6 +24,28 @@ module Enrichable
     }
   end
 
+  class_methods do
+    def clear_ai_cache(family)
+      # Get all records that belong to this family
+      records = if respond_to?(:joins)
+        case name
+        when "Transaction"
+          joins(entry: :account).where(accounts: { family_id: family.id })
+        when "Entry"
+          joins(:account).where(accounts: { family_id: family.id })
+        else
+          none
+        end
+      else
+        none
+      end
+
+      records.find_each do |record|
+        record.clear_ai_cache
+      end
+    end
+  end
+
   # Convenience method for a single attribute
   def enrich_attribute(attr, value, source:, metadata: {})
     enrich_attributes({ attr => value }, source:, metadata:)
@@ -124,6 +148,21 @@ module Enrichable
     end
   end
 
+  def clear_ai_cache
+    ActiveRecord::Base.transaction do
+      # Find attributes that were locked by AI enrichment
+      ai_enriched_attrs = data_enrichments.where(source: "ai").pluck(:attribute_name).uniq
+
+      # Remove locks for AI-enriched attributes
+      ai_enriched_attrs.each do |attr|
+        unlock_attr!(attr) if locked?(attr)
+      end
+
+      # Delete AI enrichment records
+      data_enrichments.where(source: "ai").delete_all
+    end
+  end
+
   private
     def log_enrichment(attribute_name:, attribute_value:, source:, metadata: {})
       de = DataEnrichment.find_or_create_by(

app/models/setting.rb

@@ -80,6 +80,8 @@ class Setting < RailsSettings::Base
   class << self
     alias_method :raw_onboarding_state, :onboarding_state
     alias_method :raw_onboarding_state=, :onboarding_state=
+    alias_method :raw_openai_model, :openai_model
+    alias_method :raw_openai_model=, :openai_model=
 
     def onboarding_state
       value = raw_onboarding_state
@@ -94,6 +96,18 @@ class Setting < RailsSettings::Base
       self.raw_onboarding_state = state
     end
 
+    def openai_model=(value)
+      old_value = raw_openai_model
+      self.raw_openai_model = value
+
+      if old_value != value && old_value.present?
+        Rails.logger.info("OpenAI model changed from #{old_value} to #{value}, clearing AI cache for all families")
+        Family.find_each do |family|
+          ClearAiCacheJob.perform_later(family)
+        end
+      end
+    end
+
     # Support dynamic field access via bracket notation
     # First checks if it's a declared field, then falls back to individual dynamic entries
     def [](key)