fix: Make CreatePatientScores migration idempotent

Author: sshinde-rtsl

db/migrate/20260209112204_create_patient_scores.rb

@@ -1,5 +1,12 @@
 class CreatePatientScores < ActiveRecord::Migration[6.1]
+  REQUIRED_COLUMNS = %i[patient_id score_type score_value device_created_at device_updated_at deleted_at].freeze
+
   def up
+    if table_exists?(:patient_scores) && !schema_complete?
+      say "Dropping patient_scores table due to incomplete schema"
+      drop_table :patient_scores
+    end
+
     unless table_exists?(:patient_scores)
       create_table :patient_scores, id: :uuid do |t|
         t.references :patient, null: false, foreign_key: true, type: :uuid
@@ -13,11 +20,17 @@ def up
       end
     end
 
-    add_index :patient_scores, [:patient_id, :score_type] unless index_exists?(:patient_scores, [:patient_id, :score_type])
+    add_index :patient_scores, [:patient_id, :score_type], unique: true unless index_exists?(:patient_scores, [:patient_id, :score_type])
     add_index :patient_scores, :updated_at unless index_exists?(:patient_scores, :updated_at)
   end
 
   def down
     drop_table :patient_scores, if_exists: true
   end
+
+  private
+
+  def schema_complete?
+    REQUIRED_COLUMNS.all? { |col| column_exists?(:patient_scores, col) }
+  end
 end