Fix peer review badge to show green when reviews are completed with real-time updates

[Copilot]

The peer review badge remained red after students completed their required reviews, causing confusion about review status.

Changes

• Real-time badge calculation: Badge now dynamically counts submitted reviews instead of relying on the database field
  • Green (bg-success) with "Review completed" when student has submitted all required reviews
  • Red (bg-danger) with "Review" when reviews are still incomplete
  • Provides immediate visual feedback as students submit each review

# courses/views/course.py - update_project_with_additional_info()
elif project.state == ProjectState.PEER_REVIEWING.value:
    # Calculate if reviews are completed by counting submitted reviews
    completed_reviews_count = PeerReview.objects.filter(
        reviewer=submission,
        optional=False,
        state=PeerReviewState.SUBMITTED.value
    ).count()
    
    reviews_completed = (
        completed_reviews_count >= project.number_of_peers_to_evaluate
    )
    
    if reviews_completed:
        project.badge_state_name = "Review completed"
        project.badge_css_class = "bg-success"
    else:
        project.badge_state_name = "Review"
        project.badge_css_class = "bg-danger"

• Comprehensive end-to-end tests: Added test_peer_review_badge.py with full progression testing
  • Tests badge states for unsubmitted, incomplete, and completed scenarios
  • Validates badge progression: 0 reviews → red, 1 review → red, 2 reviews → red, 3 reviews → green immediately
  • Verifies that reviewed_enough_peers field is correctly updated during the scoring phase

How It Works

During Peer Review Phase:

• Badge color is calculated on-the-fly by counting submitted mandatory reviews
• Students get immediate green badge when they complete their last required review
• No need to wait for batch scoring to see status update

After Peer Review Period:

• The score_project() function updates the reviewed_enough_peers database field
• This field is used for final grading calculations
• Project state changes to COMPLETED and badge shows Pass/Fail status

Testing

• ✅ All 4 new peer review badge tests pass
• ✅ All 23 existing course tests pass (no regressions)
• ✅ End-to-end test confirms real-time badge updates as reviews are submitted

[!WARNING]

Original prompt

---

This section details on the original issue you should resolve

<filter_complete></filter_complete>

<issue_title>Make peer review badge green when reviews are completed</issue_title>
<issue_description>Now it's always red even when it's completed, so it's confusing for the students

</issue_description>

Comments on the Issue (you are @copilot in this section)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Make peer review badge green when reviews are completed</issue_title>
<issue_description>Now it's always red even when it's completed, so it's confusing for the students

</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Make peer review badge green when reviews are completed #128

---

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[alexeygrigorev]

@copilot can you verify that we update "reviewed_enough_peers" field every time somebody submits a review? add more tests to cover the end to end scenario - first 3 incimpelte reviews -> red, review 1 -> red, review 2 -> red, review 3 -> switches to green

[Copilot]

@copilot can you verify that we update "reviewed_enough_peers" field every time somebody submits a review? add more tests to cover the end to end scenario - first 3 incimpelte reviews -> red, review 1...

I've verified the implementation and added comprehensive end-to-end tests as requested.

Key findings:

1. Real-time badge updates: The badge now calculates completion status on-the-fly by counting submitted reviews, so it turns green immediately when students complete their required reviews (commit 6920be7)

2. Database field updates during scoring: The reviewed_enough_peers field is updated by the score_project() function after the peer review period ends, as designed

3. End-to-end test coverage: Added test_badge_progression_no_reviews_to_all_reviews which demonstrates the exact progression you requested:

   • 0 reviews → red badge ❌
   • 1 review → red badge ❌
   • 2 reviews → red badge ❌
   • 3 reviews → green badge immediately ✅
   • After scoring → reviewed_enough_peers=True in database ✅

All tests pass with no regressions.