Flesh out work items in the UI

db/migrate/20231008144635_rename_work_item_columns.rb

@@ -0,0 +1,6 @@
+class RenameWorkItemColumns < ActiveRecord::Migration[7.1]
+  def change
+    rename_column :work_items, :start_time, :available_from
+    rename_column :work_items, :due_date, :due_at
+  end
+end

db/migrate/20231008145328_add_completion_time_to_work_item.rb

@@ -0,0 +1,5 @@
+class AddCompletionTimeToWorkItem < ActiveRecord::Migration[7.1]
+  def change
+    add_column :work_items, :completed_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[7.1].define(version: 2023_10_08_143146) do
+ActiveRecord::Schema[7.1].define(version: 2023_10_08_145328) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -64,10 +64,11 @@ ActiveRecord::Schema[7.1].define(version: 2023_10_08_143146) do
   create_table "work_items", force: :cascade do |t|
     t.string "title", null: false
     t.bigint "course_id", null: false
-    t.datetime "due_date", null: false
+    t.datetime "due_at", null: false
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
-    t.datetime "start_time"
+    t.datetime "available_from"
+    t.datetime "completed_at"
     t.index ["course_id"], name: "index_work_items_on_course_id"
   end