Feature/activity scrollbar 518

[riyanshigupta890-cloud]

Pull Request Template 🚀

Description

Adds a visible vertical scrollbar to the "Recent Activity" card on the dashboard so users can see there's more content below the fold. The timeline container previously had scrollbar-none, which hid the scrollbar entirely with no visual indicator that the list was scrollable. Replaced it with a themed scrollbar-thin style (consistent with the scrollbar used in the Sidebar) that adapts to light/dark mode. Also fixed tailwind.config.js, where the tailwind-scrollbar plugin was incorrectly placed inside theme.extend (where Tailwind ignores it) instead of the top-level plugins array — without this fix the scrollbar utility classes would not apply at all.

Related Issue

Closes #518

Type of Change

• New feature (non-breaking change which adds functionality)

Screenshots / Videos (if applicable)

Testing Done

• Command run: npm run test
• Command run: npm run lint
• Command run: npm run build
• Visual verification on local dev server (http://localhost:5173)

Steps to verify:

1. Go to Dashboard.
2. Scroll the "Recent Activity" card — a thin scrollbar is now visible on the right edge.
3. Toggle dark/light mode and confirm the scrollbar color adapts correctly.

Checklist

• My code follows the style guidelines of this project.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings or console errors.
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes.
• Any dependent changes have been merged and published in downstream modules.

Contributor Declaration

• I confirm that this contribution is made under the rules of GSSoC 2026 and NSoC 2026.
• I confirm that I have been assigned the related issue by a maintainer before opening this PR.
• I have read the Contributing Guidelines and Code of Conduct.

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Project	Deployment	Actions	Updated (UTC)
ranker-hub	Ready	Preview, Comment	Jun 15, 2026 3:34pm

[riyanshigupta890-cloud]

@indresh404 please review the PR as I have resolved the issue and please merge the PR