Solve the `bug` in completion Status functionality.

[dhakar66]

Bug Title: Incorrect Completion Status on Reader Pages

Current Behavior (The Bug):
The system is marking a reader task as "completed" as soon as the user opens the page. Consequently, if a user exits the reader before actually finishing the page, the Home page incorrectly shows a "ticked" (completed) status for that task.

Expected Behavior (The Fix):

• 1. Completion Trigger: A reader page should only be marked as completed when the user clicks the "Next" button to proceed to the following page. Simply opening the page must not trigger completion.
• 2. Midway Exit: If a user exits the reader while in the middle of a page (before clicking "Next"), the completion status on the Home page must remain unticked (incomplete) until they return and finish it.

---

[dhakar66]

• implement the start reading functionality

Dark mode:

light mode: