pages: Add coding tips

pages/opportunities/guides/contribution/index.md

@@ -45,17 +45,26 @@ should review those for each project.
   requests without following up or addressing review recommendations, which can
   impede progress.
 
-- **Code Quality:** Contributors must ensure that `pre-commit` is applied in
-  their branch before opening a pull request. Additionally, they should adhere
-  to coding best practices, such as avoiding excessive nesting blocks, following
-  SOLID principles, and refraining from assigning different types to the same
-  variable. It is important to consult the project's specific coding guidelines
-  for additional best practices.
-
 - **Branch Management:** When updating a branch, contributors should follow the
   project's preferred approach, whether that involves using a **rebase** or a
   **merge commit**.
 
-- **Commenting Practices:** Excessive or unnecessary comments should be avoided,
-  as well the use of emojis in comments, as they may suggest that the content
-  was generated entirely by an AI.
+- If your PR is not ready yet for review, please keep it in **draft mode**.
+
+## Coding Tips
+
+- Ensure that `pre-commit` is applied to your branch before opening a pull
+  request. Run `pre-commit install` to enable pre-commit hooks, ensuring they
+  are applied automatically before every commit.
+- Avoid excessive nesting. Try to keep nesting levels to **four or fewer** for
+  better readability and maintainability.
+- Follow the project's specific coding guidelines. Review them regularly to
+  ensure consistency across contributions.
+- Remove any unnecessary comments. In most cases, if you need to explain what
+  your code does, it may indicate that the code is unclear or overly complex.
+  This is also often a sign of code generated by Generative AI.
+- Do not use emojis in comments. This is typically seen as a red flag and may
+  suggest improper use of AI-generated content.
+- Ensure there is an empty line at the end of each file. GitHub highlights
+  missing end-of-file newlines with a red icon. Configure your IDE to
+  automatically add this final newline.