Form post wisiwyg

[DrJfrost]

Issue: #2111

Summary & Context

This pull request introduces a new version of the Create Post component. It also introduces some input component variants, new event triggering mechanisms for dropdowns and adds a small adaptation in the backend, so it supports input validation when knocking on endpoints for this new component.

• Figma links:
  • ML Figma: https://www.figma.com/design/5j0fQssrV9ipoU16P7hfKy/Website-Deliverables?node-id=1644-109092&m=dev
  • CPPA Figma: X
• Link to components/page: http://localhost:8000/news/add/

Changes

• WYSIWYG Editor Integration: Implements a basic no-JavaScript fallback on top of some fixes.
• V3 Post Creation Form: Introduces a new news/create_v3.html template for post creation.
• Form Component Styling Overhaul: Improves styles in js-less versions of dropdowns, comboboxes and input.
• Backend Integration: Updates core/views.py and news/views.py to conditionally serve V3 templates and populate context data (like dropdown options and initial values) for the modernized post creation flow when the v3 flag is active.
• UI Refinements: Includes minor design corrections across V3 components, such as wrong variable names, coloring and font sizes.

‼️ Risks & Considerations ‼️

Although I did my best to try and review what I could, there's much work from the previous iteration of developers that I don't clearly understand, like why we're importing the whole WYSIWYG js file in this branch while develop already has that file, or why wasn't it updated in a separate branch and then merged to this one.

Screenshots

• Desktop Light Mode

• Desktop Dark Mode

• Mobile

Self-review Checklist

• Tag at least one team member from each team to review this PR
• Link this PR to the related GitHub Project ticket

Frontend

• UI implementation matches Figma design
• Tested in light and dark mode
• Responsive / mobile verified
• Accessibility checked (keyboard navigation, etc.)
• Ensure design tokens are used for colors, spacing, typography, etc. – No hardcoded values
• Test without JavaScript (if applicable)
• No console errors or warnings

[gregjkal]

Looking really good! Few requests.

[julhoang]

Hi @DrJfrost , I added some comments mostly around UI styling but just wanted to say overall this is looking really great!

[julhoang]

Hey @herzog0 , thank you for continuing to push this forward – I know it's been a heavy lift given the complexity and scope of what we started with. I've left more comments below. I'm happy to jump on a huddle to discuss more if it's quicker/more helpful. Really appreciate your patience with this one! 🙏

[julhoang]

(sorry not sure why this comment got left out from the review round above)
I think this entire file can be deleted since none of these styles seem to be referenced from anywhere. 👀🪓

[herzog0]

Almost none 😭 the two ones at the bottom are. I'll delete this file and see if I can fit those extra classes somewhere, if they're really needed.

addressed