[#20] - Quick fix to the spotlight selection process

[LunarVagabond]

Related Issue: #20

Summary

Accepting the PR into the development branch will address the spotlight bug where we fail to pick a NEW repo of the week.

Changes

• See Commits and PR Review.

Checklist

• Tests added or updated
• ruff check and black pass (backend)
• vue-tsc --noEmit passes (frontend)
• CHANGELOG.md updated under ## Unreleased
• No new <style> blocks in .vue files

[Copilot]

Pull request overview

Addresses the “spotlight gap” issue where the daily safety-net sync could clear the previous Repo of the Week when the weekly selection task hasn’t produced a current-week pick, leaving the site without a spotlight.

Changes:

• Add fallback logic in sync_spotlight_watches to use the most recent prior RepoOfTheWeek when the current week has no record.
• Add test coverage to ensure the fallback preserves the previous spotlight selection.
• Configure select_repo_of_week to retry on failures, and document the behavior in the changelog.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
CHANGELOG.md	Documents the spotlight fallback and weekly task retry behavior under Unreleased → Fixed.
backend/apps/repositories/spotlight.py	Prevents daily spotlight sync from clearing watches when there is no current-week pick by falling back to the most recent pick.
backend/apps/analysis/tests/test_tasks.py	Adds a regression test ensuring the previous spotlight is preserved if the current-week pick is missing.
backend/apps/analysis/tasks.py	Adds Celery retry configuration to the weekly select_repo_of_week task.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.