add contact is_verified flag to precompute filterable field

db/migrate/20250722093235_add_is_verified_to_contacts.rb

@@ -0,0 +1,7 @@
+class AddIsVerifiedToContacts < ActiveRecord::Migration[7.1]
+  def change
+    add_column :contacts, :is_verified, :boolean, default: false, null: false
+    add_index :contacts, :is_verified
+    add_index :contacts, [:account_id, :is_verified], name: 'index_contacts_on_account_id_and_is_verified'
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.1].define(version: 2025_07_14_104358) do
+ActiveRecord::Schema[7.1].define(version: 2025_07_22_093235) do
   # These extensions should be enabled to support this database
   enable_extension "pg_stat_statements"
   enable_extension "pg_trgm"
@@ -538,14 +538,17 @@ ActiveRecord::Schema[7.1].define(version: 2025_07_14_104358) do
     t.string "location", default: ""
     t.string "country_code", default: ""
     t.boolean "blocked", default: false, null: false
+    t.boolean "is_verified", default: false, null: false
     t.index "lower((email)::text), account_id", name: "index_contacts_on_lower_email_account_id"
     t.index ["account_id", "email", "phone_number", "identifier"], name: "index_contacts_on_nonempty_fields", where: "(((email)::text <> ''::text) OR ((phone_number)::text <> ''::text) OR ((identifier)::text <> ''::text))"
+    t.index ["account_id", "is_verified"], name: "index_contacts_on_account_id_and_is_verified"
     t.index ["account_id", "last_activity_at"], name: "index_contacts_on_account_id_and_last_activity_at", order: { last_activity_at: "DESC NULLS LAST" }
     t.index ["account_id"], name: "index_contacts_on_account_id"
     t.index ["account_id"], name: "index_resolved_contact_account_id", where: "(((email)::text <> ''::text) OR ((phone_number)::text <> ''::text) OR ((identifier)::text <> ''::text))"
     t.index ["blocked"], name: "index_contacts_on_blocked"
     t.index ["email", "account_id"], name: "uniq_email_per_account_contact", unique: true
     t.index ["identifier", "account_id"], name: "uniq_identifier_per_account_contact", unique: true
+    t.index ["is_verified"], name: "index_contacts_on_is_verified"
     t.index ["name", "email", "phone_number", "identifier"], name: "index_contacts_on_name_email_phone_number_identifier", opclass: :gin_trgm_ops, using: :gin
     t.index ["phone_number", "account_id"], name: "index_contacts_on_phone_number_and_account_id"
   end