Ken/standardize scroll

[ken-zlai]

Summary

Quick change to standardize scroll styles across the app

Checklist

• Added Unit Tests
• Covered by existing CI
• Integration tested
• Documentation update

Summary by CodeRabbit

• Style

  • Enhanced the appearance of scrollbars with updated styling and customizable color options.

• Refactor

  • Simplified scroll behavior by replacing custom scrolling components with standard, CSS-managed scroll containers across the layout and key content areas.

[coderabbitai]

Walkthrough

The changes update scrollbar styling by adding new CSS variables (--scrollcolor and --scrollbackground) and enhancing scrollbar appearance via CSS. Custom ScrollArea Svelte components and associated export aliases have been removed. In layout and drift page routes, the ScrollArea component is replaced by standard

elements with overflow styling, streamlining scrolling functionality.

Changes

File(s)	Summary
frontend/src/app.css	Added CSS variables for scrollbar color/background; customized scrollbar appearance with pseudo-elements and set scrollbar-width to thin.
frontend/src/lib/components/ui/scroll-area/{index.ts, scroll-area.svelte, scroll-area-scrollbar.svelte}	Removed custom ScrollArea components and export aliases.
frontend/src/routes/{+layout.svelte, joins/[slug]/observability/drift/+page.svelte}	Replaced ScrollArea component with standard elements using CSS overflow classes; removed associated imports.

Possibly related PRs

• Frontend 8/14 milestone #45: Addresses removal of the ScrollArea component in favor of a
  for scrolling, aligning with these CSS scrollbar customizations.

Poem

In code's realm, the scroll takes flight,
CSS paints a sleek new light.
Gone are complex scroll designs,
Now simple divs align.
Clean and crisp, our code renews,
A fresh start in every view.

[!WARNING]

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📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro (Legacy)

📥 Commits

Reviewing files that changed from the base of the PR and between 3ffb54f and a4c890d.

📒 Files selected for processing (6)

• frontend/src/app.css (1 hunks)
• frontend/src/lib/components/ui/scroll-area/index.ts (0 hunks)
• frontend/src/lib/components/ui/scroll-area/scroll-area-scrollbar.svelte (0 hunks)
• frontend/src/lib/components/ui/scroll-area/scroll-area.svelte (0 hunks)
• frontend/src/routes/+layout.svelte (1 hunks)
• frontend/src/routes/joins/[slug]/observability/drift/+page.svelte (2 hunks)

💤 Files with no reviewable changes (3)

• frontend/src/lib/components/ui/scroll-area/scroll-area.svelte
• frontend/src/lib/components/ui/scroll-area/scroll-area-scrollbar.svelte
• frontend/src/lib/components/ui/scroll-area/index.ts

⏰ Context from checks skipped due to timeout of 90000ms (1)

• GitHub Check: enforce_triggered_workflows

🔇 Additional comments (5)

frontend/src/routes/+layout.svelte (1)

35-40: LGTM! Clean transition to native scrolling.

The switch from ScrollArea to native scrolling with CSS classes simplifies the implementation.

frontend/src/routes/joins/[slug]/observability/drift/+page.svelte (1)

221-221: LGTM! Consistent with layout changes.

The implementation aligns with the standardized scrolling approach.

Also applies to: 369-369

frontend/src/app.css (3)

123-125: LGTM! Well-structured scroll styling variables.

Dark theme scroll colors provide good contrast.

---

132-132: LGTM! Cross-browser scroll width.

Consistent thin scrollbar width across browsers.

---

138-151: LGTM! WebKit scrollbar customization.

Complete WebKit scrollbar styling with consistent border radius.

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[sean-zlai]

LGTM