feat: Add Tutor Time Dashboard

[WaelAlahamdi]

Description

Introduced a new Tutor Time Dashboard feature for tutors to track and analyse their marking workload.

The dashboard provides:

• Summary cards showing total sessions, total time spent, tasks reviewed, and average time per task.
• Interactive bar chart (Ngx-Charts) visualising time spent per task.
• Task details table with per-task statistics (time spent, assessments, and average per assessment).
• Recent sessions section with session cards showing status (Active/Completed).
• Session details view with activity timeline and assessment breakdown.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

• Verified summary cards display calculated values correctly.
• Confirmed bar chart renders with sample task data.
• Checked task details table renders accurate aggregated information.
• Ensured recent sessions list and session details modal open without errors.
• Tested responsiveness across desktop and tablet screen sizes.

---

Screenshots

Before

No Tutor Time Dashboard available.

After

New Tutor Time Dashboard at /tutor-times: with stats cards, chart, task details, recent sessions, and session details.

---

To view the new dashboard:

1. Run the frontend locally on the branch feature/tutor-time-dashboard
2. Navigate to http://localhost:4200/#/tutor-times

---

Testing Checklist:

• Tested in latest Chrome
• Tested in latest Safari
• Tested in latest Firefox

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code in hard-to-understand areas
• My changes generate no new warnings
• I have made corresponding changes to the documentation

[EkamBhullar]

Hey @WaelAlahamdi , Thanks for the pull request. You should try referring to the tutor-times frontend documentation here at https://github.com/thoth-tech/doubtfire-astro/blob/main/src/content/docs/frontend/tutor-times/tutor-times-design.md . The UI and design requirements are well documented here, and should be based upon that.

[WaelAlahamdi]

Hey @WaelAlahamdi , Thanks for the pull request. You should try referring to the tutor-times frontend documentation here at https://github.com/thoth-tech/doubtfire-astro/blob/main/src/content/docs/frontend/tutor-times/tutor-times-design.md . The UI and design requirements are well documented here, and should be based upon that.

Thank you @EkamBhullar, I updated this after reading this documentation.