fix(editor): move mail editor from ckeditor to tip tap (#170)

[johanah29]

Proposed changes

Testing Instructions

1. Step-by-step how to test
2. Environment or config notes

Related issues

• Closes #ISSUE-NUMBER

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality
• For bug fix -> I implemented a test that covers the bug

Further comments

If this is a relatively large or complex change, kick off the discussion by explaining why you chose the solution you did and what alternatives you considered, etc...

[Filigran-Automation]

🤖 [AI-generated]

Hey @johanah29! 👋 Thanks a lot for opening PR #6386 — this is a meaty one (a full rich-text editor swap across 27 files), and we really appreciate the work! 🙏

I just had a quick look and I think the description could be enhanced a little to help reviewers get through a change this size faster. I haven't touched your description — just a gentle, optional nudge:

Area	What could help	Suggestion
### Proposed changes	Currently empty (* bullets)	A couple of bullets on the what & why — e.g. replacing CKEditor with a TipTap-based editor, the new rich_text_editor components/extensions, and what motivated the move
### Testing Instructions	Placeholder text left as-is	A short step-by-step: where the editor is used (e.g. remediation form), what to try (formatting, tables, font size, indent), and anything to watch for on existing content
### Related issues	Closes #ISSUE-NUMBER placeholder	Link the tracking issue with Closes #<number> — the conventions ask every PR to be linked to an issue 🙂

💡 If helpful, the contribution conventions walk through what to include.

No rush at all — totally fine to fill this in while the draft is open. Thanks again for contributing to OpenAEV! 🚀