chore(prettier): deduplicate frontend/backend config

[leowla]

Describe the issue

Frontend and backend have the same prettier config. Potential for drifting rules.

Describe the solution

Use single root prettier config.

Risk

Maybe CI will fail

Definition of Done

• Code peer-reviewed
• Wiki Documentation is written and up to date
• Unit tests written and passing
  - [ ] Integration tests written and passing
• Continuous Integration build passing
  - [ ] Acceptance criteria met
  - [ ] Deployed to production environment

Reviewed By

Who reviewed your PR - for commit history once merged

[Copilot]

Pull request overview

This PR removes duplicated Prettier configuration in the frontend/ and backend/ packages and centralizes formatting rules in a single repository-root Prettier config to reduce the chance of rule drift between the two codebases.

Changes:

• Deleted frontend/.prettierrc.js
• Deleted backend/.prettierrc.js
• Added a root .prettierrc.json with the shared formatting rules

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
frontend/.prettierrc.js	Removes the frontend-local Prettier config in favor of a shared root config.
backend/.prettierrc.js	Removes the backend-local Prettier config in favor of a shared root config.
.prettierrc.json	Introduces the shared Prettier configuration for the repo.

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[harbassan]

sweet, good catch

[hazikchaudhry]

nice, looks good