[YheChen]

Proposed Changes

Large React Table v8 tables, including the Students table, mount every row on load. Tables with more than 50 matching rows now use TanStack React Virtual to mount the visible rows and a small buffer. The table measures row heights and keeps row numbering and selection consistent as users scroll.

The JavaScript suite passed all 523 active tests, including a regression test for scrolling a 1,000-row table. A Chrome smoke test mounted 17 rows initially, reached row 1,000, and verified that Select All applied to rows outside the initial view.

Screenshots of your changes (if applicable)

Type of Change

(Write an X or a brief description next to the type or types that best describe your changes.)

Type	Applies?
🚨 Breaking change (fix or feature that would cause existing functionality to change)
✨ New feature (non-breaking change that adds functionality)
🐛 Bug fix (non-breaking change that fixes an issue)	X
🎨 User interface change (change to user interface; provide screenshots)
♻️ Refactoring (internal change to codebase, without changing functionality)
🚦 Test update (change that only adds or modifies tests)
📦 Dependency update (change that updates a dependency)
📖 Documentation update (change that updates documentation)
🔧 Internal (change that only affects developers or continuous integration)

Checklist

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Before opening your pull request:

• I have performed a self-review of my changes.
  • Check that all changed files included in this pull request are intentional changes.
  • Check that all changes are relevant to the purpose of this pull request, as described above.
• I have added tests for my changes, if applicable.
  • This is required for all bug fixes and new features.
• I have updated the project documentation, if applicable.
  • This is required for new features.
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After opening your pull request:

• I have updated the project Changelog (this is required for all changes).
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• I have verified that the CI tests have passed.
• I have reviewed the test coverage changes reported by Coveralls.
• I have requested a review from a project maintainer.

Questions and Comments

[coveralls]

Coverage Report for CI Build 41769960110

Coverage increased (+0.005%) to 91.404%

Details

• Coverage increased (+0.005%) from the base build.
• Patch coverage: 19 of 19 lines across 1 file are fully covered (100%).
• No coverage regressions found.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

No coverage regressions found.

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Coverage Stats

Relevant Lines:	54343
Covered Lines:	50746
Line Coverage:	93.38%
Relevant Branches:	2649
Covered Branches:	1347
Branch Coverage:	50.85%
Branches in Coverage %:	Yes
Coverage Strength:	129.82 hits per line

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💛 - Coveralls