fix(web): mobile card spacing

[jabloink]

Before

After

Summary by CodeRabbit

• Style
  • Adjusted torrent card dimensions and spacing in mobile view
  • Repositioned scroll-to-top button in mobile layout for improved visibility

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[coderabbitai]

Walkthrough

This PR adjusts layout parameters in the mobile torrents card component by reducing the virtualizer item height estimate from 204 to 180 pixels and repositioning the scroll-to-top button closer to the bottom edge of the mobile screen.

Changes

Cohort / File(s)	Summary
Mobile UI Layout Adjustments web/src/components/torrents/TorrentCardsMobile.tsx	Reduced virtualizer estimateSize from 204 to 180 for non-ultra-compact/compact views; decreased ScrollToTopButton bottom offset from calc(8rem+env(safe-area-inset-bottom)) to calc(3rem+env(safe-area-inset-bottom))

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• fix(web): use fixed heights for mobile torrent cards #812 — Also modifies virtualizer item height logic in TorrentCardsMobile.tsx, replacing dynamic measurement with fixed heights while this PR adjusts the estimate value directly.

Suggested labels

web, mobile, cosmetic, bugfix

Suggested reviewers

• s0up4200

Poem

🐇 A button hops down, closer to the ground,
Items shrink in height, more cards abound,
Mobile scrolls smoother, spacing refined,
Little tweaks of layout, carefully designed! 📱✨

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately reflects the main changes: adjusting card spacing on mobile by modifying virtualizer height calculation and ScrollToTopButton positioning.

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix/mobile-card-spacing

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