Refactor clear_ai_cache to use family_scope pattern

- Move family-scoped queries to models via family_scope class method
- Remove hardcoded model names from Enrichable concern
- Replace inline rescue with proper respond_to? check
- Add count tracking for better logging

app/models/entry.rb

@@ -66,6 +66,11 @@ class Entry < ApplicationRecord
     pending.where("entries.date < ?", days.days.ago.to_date)
   }
 
+  # Family-scoped query for Enrichable#clear_ai_cache
+  def self.family_scope(family)
+    joins(:account).where(accounts: { family_id: family.id })
+  end
+
   # Auto-exclude stale pending transactions for an account
   # Called during sync to clean up pending transactions that never posted
   # @param account [Account] The account to clean up