add retrospective.md (#56)

This pull request introduces the `retrospective.md` file, consolidating
individual retrospectives from team members into a unified document. It
reflects on lessons learned, areas for improvement, and strategies for
future projects.

### Summary  
- The file includes insights into collaborative code review, technical
problem-solving, and CI/CD practices.
- Highlights key takeaways like improving communication, planning, and
workload management.
- Outlines actionable steps for refining development workflows, such as
addressing edge cases and adopting advanced CI/CD practices.

### Checklist  
- [x] The file is named descriptively (`retrospective.md`).  
- [x] The content includes clear and structured sections for better
readability.
- [x] Feedback and lessons learned are categorized under "Stop Doing,"
"Continue Doing," and "Start Doing."
- [x] Includes a cohesive summary reflecting the group experience and
individual contributions.

This document aims to provide a valuable reference for improving team
dynamics and project workflows in future endeavors.

collaboration/retrospective.md

@@ -1,23 +1,68 @@
-<!-- this template is for inspiration, feel free to change it however you like! -->
+# Team Retrospective
 
-# Retrospective
+This project has been an inspiring journey for our team, filled with
+opportunities to learn, collaborate, and grow. As we reflect, we celebrate what
+worked well and identify ways to continue building on our success.
+
+---
 
 ## Stop Doing
 
+- Overthinking solutions can make challenges seem more complex than they are.
+  Embracing simplicity will allow us to move faster and more confidently.
+- Skipping thorough testing at the beginning meant addressing unexpected
+  situations later. A comprehensive approach from the start will ensure
+  smoother progress.
+- Taking on too much at once can reduce focus. Balanced workloads will help us
+  maintain energy and quality.
+
+---
+
 ## Continue Doing
 
+- Collaborative reviews have been invaluable. They helped us see challenges from
+  different perspectives and strengthen our solutions.
+- Our commitment to clean, modular, and reusable code brought consistency and
+  high standards to our work.
+- Using feedback constructively allowed us to improve continuously, turning
+  challenges into stepping stones.
+- Open communication and regular updates kept us aligned and moving forward
+  together.
+
+---
+
 ## Start Doing
 
-## Lessons Learned
+- Structured planning before coding—like brainstorming with pseudocode or
+  diagrams—will help us streamline our workflows.
+- Exploring advanced CI/CD tools will enhance our efficiency and help us tackle
+  projects with confidence.
+- Testing for all scenarios early will save time and effort, ensuring
+  reliability from the start.
+- Distributing tasks more evenly will allow everyone to contribute fully while
+  maintaining balance.
+- Setting clear timelines and milestones will help us stay on track and reduce
+  last-minute stress.
+- Providing clear task descriptions will ensure everyone has the clarity needed
+  to excel.
 
-______________________________________________________________________
+---
+
+## Lessons Learned
 
-## Strategy vs. Board
+- CI/CD practices are powerful tools that improve quality and efficiency.
+- Simplicity often leads to the most effective solutions.
+- Careful preparation upfront prevents unnecessary rework.
+- Balanced workloads create an environment where everyone can thrive.
+- Clear communication builds trust and ensures smooth collaboration.
 
-### What parts of your plan went as expected?
+---
 
-### What parts of your plan did not work out?
+## Conclusion
 
-### Did you need to add things that weren't in your strategy?
+This project has been an enriching experience for our team. By celebrating
+teamwork, staying curious, and embracing best practices, we’ve laid the
+foundation for even more success in future endeavors. Together, we’re ready to
+take on new challenges with confidence and enthusiasm.
 
-### Or remove extra steps?
+---