feat: add Chelsea's user stories for Lesson 05 (#237)

* Update lesson2.ts

* Created README.md User Stories

* chore: restoring lesson_03 file

Author: Cogbonnia

lesson_05/cogbonnia/README.md

@@ -0,0 +1,34 @@
+# Pomodoro Timer App - User Stories
+
+## User Story 1: Setting the Study Timer
+**As a** student,  
+**I want to** set a custom study timer that defaults to 25 minutes but allows me to adjust the time,  
+**so that** I can focus on tasks for a duration that matches my specific needs and preferences.
+
+**Acceptance Criteria:**
+- The timer should default to 25 minutes upon launch.
+- The user should be able to modify the duration of the timer.
+- The timer should display the time remaining during the countdown.
+- The user should be able to start, pause, and reset the timer at any point.
+
+## User Story 2: Break Notifications
+**As a** user who follows the Pomodoro technique,  
+**I want to** receive a notification when the timer ends, indicating that it’s time for a break,  
+**so that** I can take regular breaks to prevent burnout and stay productive over long periods.
+
+**Acceptance Criteria:**
+- The app should notify the user with a sound or popup when the timer reaches zero.
+- The notification should include the option to start a break timer (e.g., 5 minutes).
+- After the break timer ends, the user should receive a notification to resume studying.
+- The user should have the ability to customize the notification sound or message.
+
+## User Story 3: Tracking Pomodoro Sessions
+**As a** busy professional,  
+**I want to** track how many Pomodoro sessions I’ve completed in a day or week,  
+**so that** I can monitor my productivity, understand my work habits, and optimize my study/work routine.
+
+**Acceptance Criteria:**
+- The app should record each completed Pomodoro session.
+- The user should be able to view the total number of Pomodoro sessions completed for the day and week.
+- The user should have the option to export or share their session data.
+- A visual representation (e.g., bar chart or calendar view) of the completed sessions should be available.