refactor: update the sidebar and remove the topbar

[tudoramariei]

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[Copilot]

Pull Request Overview

This PR refactors the frontend navigation system by removing the old topbar component and updating the sidebar implementation. The changes involve restructuring user types, moving navigation components to a new directory structure, and updating translation keys to support the new navigation layout.

• Refactored user type definitions to use more consistent naming conventions
• Moved navigation components from paul/ to paul/navigation/ directory
• Replaced topbar functionality with an updated sidebar that includes user menu and mobile support

Reviewed Changes

Copilot reviewed 35 out of 38 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
frontend/src/types/user.ts	Updated user type definitions with new field names and structure
frontend/src/types/team-*.ts	Updated imports to use new UserProps type
frontend/src/types/common-props.ts	Split CommonProps into blank and authenticated variants
frontend/src/pages/users/team/	Updated type imports and field name references
frontend/src/locales/	Moved topbar translation keys to navigation section
frontend/src/layouts/	Updated layout components to use new navigation structure
frontend/src/components/paul/navigation/	New navigation components including sidebar, topbar, and user menu
frontend/src/components/ui/sidebar.tsx	Updated sidebar implementation with extracted context
backend/users/	Added to_json method and updated serialization logic

Files not reviewed (1)

• frontend/package-lock.json: Language not supported

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