feat(navbar): adds support for expanding side bar

[seferturan]

🎶 Notes 🎶

• Fixes Add support for expanding sidenavbar #2100
• Adds support for expanding the side navbar

⚠️ Caveat ⚠️

In the collapsed state, the trakt logo is not visible. I experimented with putting in the actions bar, but that looked crappy:

Either we leave it without the logo, or we do a follow-up with a better solution😅

👀 Example 👀

Screen.Recording.2026-04-14.at.10.42.21.mov

[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces an expandable side navigation bar, providing users with the flexibility to switch between a compact icon-only view and an expanded view with labels. The changes involve significant refactoring of the navbar structure to support dynamic width adjustments and state management, ensuring a seamless transition between the two modes while maintaining existing functionality.

Highlights

• Side Navbar Expansion: Implemented a toggle mechanism to expand and collapse the side navigation bar, allowing for a more compact or detailed view.
• UI Components: Added a new MenuIcon component and refactored existing navbar components to support the new expanded state, including updated layouts for user menus and navigation groups.
• Tooltip Enhancements: Updated the Tooltip component to support a disabled state, which is utilized when the navbar is expanded to prevent redundant tooltips.
• Localization: Added new translation keys for the expand and collapse button labels.

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[deepsource-io]

DeepSource Code Review

We reviewed changes in 1674ccb...621b5f3 on this pull request. Below is the summary for the review, and you can see the individual issues we found as inline review comments.

See full review on DeepSource ↗

PR Report Card

Overall Grade

Security   Reliability   Complexity   Hygiene   Coverage

Code Review Summary

Analyzer	Status	Updated (UTC)	Details
JavaScript		Apr 14, 2026 9:02a.m.	Review ↗
Code coverage		Apr 14, 2026 9:02a.m.	Review ↗

Code Coverage Summary

Language	Line Coverage (Overall)
Aggregate	82.1%
Javascript	82.1%

➟ Additional coverage metrics may have been reported. See full coverage report ↗

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[gemini-code-assist]

Code Review

This pull request implements a collapsible side navigation bar, introducing a new MenuIcon component and refactoring the SideNavbar to support both expanded and collapsed states via the useCollapsedSection store. The changes include extracting logic into internal components like NavGroup and SideNavbarContent, adding a disabled prop to Tooltips, and updating the UserMenu and ProfileLink to display labels when expanded. Feedback suggests adhering to Svelte 5 best practices by using reactive style declarations instead of $effect for document-level CSS variables, as well as improving CSS maintainability by replacing implicit variables with explicit props for alignment and simplifying absolute positioning in the user menu.