deprecate LRC Bank input tube purpose

app/models/sample_manifest/sample_tube_behaviour.rb

@@ -20,7 +20,7 @@ def io_samples
     end
 
     def acceptable_purposes
-      Tube::Purpose.where(target_type: SampleTube)
+      Tube::Purpose.where(target_type: SampleTube, deprecated: false)
     end
 
     def default_purpose

app/models/sample_manifest/tube_rack_behaviour.rb

@@ -20,7 +20,7 @@ def generate
     end
 
     def acceptable_purposes
-      Tube::Purpose.where(target_type: SampleTube)
+      Tube::Purpose.where(target_type: SampleTube, deprecated: false)
     end
 
     def acceptable_rack_purposes

db/migrate/20260429114103_add_deprecated_fields_to_plate_purposes.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+class AddDeprecatedFieldsToPlatePurposes < ActiveRecord::Migration[8.0]
+  def change
+    add_column :plate_purposes, :deprecated, :boolean, default: false, null: false
+    add_column :plate_purposes, :deprecated_at, :datetime
+  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: 2026_04_24_000000) do
+ActiveRecord::Schema[8.0].define(version: 2026_04_29_114103) do
   create_table "accession_sample_statuses", charset: "utf8mb4", collation: "utf8mb4_unicode_ci", force: :cascade do |t|
     t.integer "sample_id", null: false
     t.string "status", null: false
@@ -857,6 +857,8 @@
     t.integer "source_purpose_id"
     t.integer "lifespan"
     t.integer "barcode_prefix_id"
+    t.boolean "deprecated", default: false, null: false
+    t.datetime "deprecated_at"
     t.index ["barcode_prefix_id"], name: "fk_rails_763bed2756"
     t.index ["target_type"], name: "index_plate_purposes_on_target_type"
     t.index ["type"], name: "index_plate_purposes_on_type"

lib/tasks/deprecate_lrc_bank_input_purpose.rake

@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+# # One-time task run to deprecate the LRC Bank Input tube purpose.
+# # For reference: Y26-075
+
+namespace :LRC_BANK_INPUT do
+  desc 'Deprecate LRC Bank Input tube purpose'
+  task deprecate_lrc_bank_input_purpose: :environment do
+    lrc_bank_input_purpose = Tube::Purpose.find_by(name: 'LRC Bank Input')
+
+    unless lrc_bank_input_purpose
+      puts "Tube Purpose 'LRC Bank Input' not found. No action taken."
+      next
+    end
+
+    lrc_bank_input_purpose.update!(deprecated: true, deprecated_at: DateTime.now)
+
+    puts 'Done: LRC Bank Input tube purpose is been deprecated.'
+  end
+end