CLDC-4142: Add conditional description question

seems to largely just work without needing major tweaks

app/models/form/lettings/pages/lead_tenant_gender_same_as_sex.rb

@@ -8,6 +8,7 @@ class Form::Lettings::Pages::LeadTenantGenderSameAsSex < ::Form::Page
   def questions
     @questions ||= [
       Form::Lettings::Questions::GenderSameAsSex.new(nil, nil, self, person_index: 1),
+      Form::Lettings::Questions::GenderDescription.new(nil, nil, self, person_index: 1),
     ]
   end
 end

app/models/form/lettings/pages/person_gender_same_as_sex.rb

@@ -11,6 +11,7 @@ class Form::Lettings::Pages::PersonGenderSameAsSex < ::Form::Page
   def questions
     @questions ||= [
       Form::Lettings::Questions::GenderSameAsSex.new(nil, nil, self, person_index: @person_index),
+      Form::Lettings::Questions::GenderDescription.new(nil, nil, self, person_index: @person_index),
     ]
   end
 end

app/models/form/lettings/questions/gender_description.rb

@@ -0,0 +1,16 @@
+class Form::Lettings::Questions::GenderDescription < ::Form::Question
+  def initialize(id, hsh, page, person_index:)
+    super(id, hsh, page)
+    @id = "gender_description#{person_index}"
+    @type = "text"
+    @check_answers_card_number = person_index
+    @question_number = QUESTION_NUMBER_FROM_YEAR[form.start_date.year] || QUESTION_NUMBER_FROM_YEAR[QUESTION_NUMBER_FROM_YEAR.keys.max]
+    @person_index = person_index
+  end
+
+  def derived?(log)
+    log.public_send("gender_same_as_sex#{@person_index}") != 2
+  end
+
+  QUESTION_NUMBER_FROM_YEAR = { 2026 => 0 }.freeze
+end

app/models/form/lettings/questions/gender_same_as_sex.rb

@@ -5,6 +5,7 @@ class Form::Lettings::Questions::GenderSameAsSex < ::Form::Question
     @type = "radio"
     @check_answers_card_number = person_index
     @question_number = QUESTION_NUMBER_FROM_YEAR[form.start_date.year] || QUESTION_NUMBER_FROM_YEAR[QUESTION_NUMBER_FROM_YEAR.keys.max]
+    @conditional_for = { "gender_description#{person_index}" => [2] }
     @person_index = person_index
   end
 

config/locales/forms/2026/lettings/household_characteristics.en.yml

@@ -37,6 +37,13 @@ en:
             hint_text: ""
             question_text: "Is the gender the lead tenant identifies with the same as their sex registered at birth?"
 
+          gender_description1:
+            page_header: ""
+            check_answer_label: "Gender identity"
+            check_answer_prompt: ""
+            hint_text: ""
+            question_text: "Enter gender identity"
+
           sex1:
             page_header: ""
             check_answer_label: "Lead tenant’s gender identity"
@@ -144,6 +151,13 @@ en:
             hint_text: ""
             question_text: "Is the gender person 2 identifies with the same as their sex registered at birth?"
 
+          gender_description2:
+            page_header: ""
+            check_answer_label: "Gender identity"
+            check_answer_prompt: ""
+            hint_text: ""
+            question_text: "Enter gender identity"
+
           sex2:
             page_header: ""
             check_answer_label: "Person 2’s gender identity"
@@ -199,6 +213,13 @@ en:
             hint_text: ""
             question_text: "Is the gender person 3 identifies with the same as their sex registered at birth?"
 
+          gender_description3:
+            page_header: ""
+            check_answer_label: "Gender identity"
+            check_answer_prompt: ""
+            hint_text: ""
+            question_text: "Enter gender identity"
+
           sex3:
             page_header: ""
             check_answer_label: "Person 3’s gender identity"
@@ -254,6 +275,13 @@ en:
             hint_text: ""
             question_text: "Is the gender person 4 identifies with the same as their sex registered at birth?"
 
+          gender_description4:
+            page_header: ""
+            check_answer_label: "Gender identity"
+            check_answer_prompt: ""
+            hint_text: ""
+            question_text: "Enter gender identity"
+
           sex4:
             page_header: ""
             check_answer_label: "Person 4’s gender identity"
@@ -309,6 +337,13 @@ en:
             hint_text: ""
             question_text: "Is the gender person 5 identifies with the same as their sex registered at birth?"
 
+          gender_description5:
+            page_header: ""
+            check_answer_label: "Gender identity"
+            check_answer_prompt: ""
+            hint_text: ""
+            question_text: "Enter gender identity"
+
           sex5:
             page_header: ""
             check_answer_label: "Person 5’s gender identity"
@@ -364,6 +399,13 @@ en:
             hint_text: ""
             question_text: "Is the gender person 6 identifies with the same as their sex registered at birth?"
 
+          gender_description6:
+            page_header: ""
+            check_answer_label: "Gender identity"
+            check_answer_prompt: ""
+            hint_text: ""
+            question_text: "Enter gender identity"
+
           sex6:
             page_header: ""
             check_answer_label: "Person 6’s gender identity"
@@ -419,6 +461,13 @@ en:
             hint_text: ""
             question_text: "Is the gender person 7 identifies with the same as their sex registered at birth?"
 
+          gender_description7:
+            page_header: ""
+            check_answer_label: "Gender identity"
+            check_answer_prompt: ""
+            hint_text: ""
+            question_text: "Enter gender identity"
+
           sex7:
             page_header: ""
             check_answer_label: "Person 7’s gender identity"
@@ -474,6 +523,13 @@ en:
             hint_text: ""
             question_text: "Is the gender person 8 identifies with the same as their sex registered at birth?"
 
+          gender_description8:
+            page_header: ""
+            check_answer_label: "Gender identity"
+            check_answer_prompt: ""
+            hint_text: ""
+            question_text: "Enter gender identity"
+
           sex8:
             page_header: ""
             check_answer_label: "Person 8’s gender identity"