Add migration to SessionError table

There are two types of errors the candidate can encounter when using one
login. Typical 500 errors and when a user uses the wrong email address

We need to know what error the candidate gets to redirect them to the
correct page.

Prior to this change we are redirecting the candidate to wrong_email
error page even if it's a 500 error page.

Adding a error_type to the SessionError table makes it easier to
distinguish between these errors. Better than storing this information
in the session.

app/models/session_error.rb

@@ -1,3 +1,8 @@
 class SessionError < ApplicationRecord
   belongs_to :candidate, optional: true
+
+  enum :error_type, {
+    internal: 'internal',
+    wrong_email_address: 'wrong_email_address',
+  }
 end

config/analytics_blocklist.yml

@@ -15,6 +15,7 @@
   - id_token_hint
   - body
   - omniauth_hash
+  - error_type
   - created_at
   - updated_at
   :audits:

db/migrate/20250123164914_add_error_type_to_session_error.rb

@@ -0,0 +1,5 @@
+class AddErrorTypeToSessionError < ActiveRecord::Migration[8.0]
+  def change
+    add_column(:session_errors, :error_type, :string, default: 'internal')
+  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[8.0].define(version: 2025_01_09_085508) do
+ActiveRecord::Schema[8.0].define(version: 2025_01_23_164914) do
   create_sequence "qualifications_public_id_seq", start: 120000
 
   # These are extensions that must be enabled in order to support this database
@@ -806,6 +806,7 @@
     t.json "omniauth_hash"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.string "error_type", default: "internal"
     t.index ["candidate_id"], name: "index_session_errors_on_candidate_id"
   end