Add pagination to Admin Users table for performance

[donny-wong]

Proposed Changes

(Describe your changes here. Also describe the motivation for your changes: what problem do they solve, or how do they improve the application or codebase? If this pull request fixes an open issue, use a keyword to link this pull request to the issue.)

Replaced the full-table client-side load with server-side pagination locked to 100 records per page. This resolves severe rendering lags and heavy query payloads by fetching rows in explicit, manageable windows.

Screenshots of your changes (if applicable)

Associated documentation repository pull request (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)	x
🐛 Bug fix (non-breaking change that fixes an issue)
🎨 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)
🔧 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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• I have reviewed the test coverage changes reported by Coveralls.
• I have requested a review from a project maintainer.

Questions and Comments

(Include any questions or comments you have regarding your changes.)

[coveralls]

Coverage Report for CI Build 27252220931

Coverage decreased (-0.01%) to 90.293%

Details

• Coverage decreased (-0.01%) from the base build.
• Patch coverage: 7 uncovered changes across 2 files (62 of 69 lines covered, 89.86%).
• No coverage regressions found.

Uncovered Changes

File	Changed	Covered	%
app/javascript/Components/admin_users_list.jsx	20	16	80.0%
app/controllers/admin/users_controller.rb	27	24	88.89%
Total (3 files)	69	62	89.86%

Coverage Regressions

No coverage regressions found.

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Coverage Stats

Relevant Lines:	50238
Covered Lines:	46334
Line Coverage:	92.23%
Relevant Branches:	2259
Covered Branches:	1067
Branch Coverage:	47.23%
Branches in Coverage %:	Yes
Coverage Strength:	126.49 hits per line

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💛 - Coveralls