Implement keyset/cursor pagination for users list page

[Copilot]

Offset pagination creates O(n) load on MySQL as page depth increases. Keyset pagination uses indexed columns for O(1) performance regardless of page position.

Changes

• New KeysetPagination component - Cursor encoding/decoding (base64 JSON), URL generation for prev/next navigation
• New KeysetDataProvider - Replaces ActiveDataProvider, uses WHERE conditions on indexed columns instead of OFFSET
• Updated UserController::actionIndex() - Uses KeysetDataProvider with rank as primary key column
• Updated views/user/index.php - Manual table rendering with prev/next pagination links

How it works

Instead of:

SELECT * FROM user ORDER BY rank LIMIT 50 OFFSET 10000

Uses:

SELECT * FROM user 
WHERE rank > :lastRank OR (rank = :lastRank AND id > :lastId)
ORDER BY rank, id LIMIT 51

Cursor contains encoded {key, id} tuple for tie-breaking on non-unique sort columns.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• github.com (HTTP Only)
  • Triggering command: /usr/bin/ssh /usr/bin/ssh -o SendEnv=GIT_PROTOCOL git@github.com git-upload-pack 'jquery/jquery-dist.git' (packet block)
  • Triggering command: /usr/bin/ssh /usr/bin/ssh -o SendEnv=GIT_PROTOCOL git@github.com git-upload-pack 'RobinHerbots/Inputmask.git' (packet block)
  • Triggering command: /usr/bin/ssh /usr/bin/ssh -o SendEnv=GIT_PROTOCOL git@github.com git-upload-pack 'twbs/bootstrap.git' (packet block)
• https://api.github.com/repos/cebe/markdown/zipball/8efb4268c90add2eee0edacf503ae71f22ccc745
  • Triggering command: /usr/bin/php8.3 /usr/bin/php8.3 -n -c /tmp/FnhPet /usr/bin/composer install --no-dev --no-progress (http block)
• https://api.github.com/repos/ezyang/htmlpurifier/zipball/b287d2a16aceffbf6e0295559b39662612b77fcf
  • Triggering command: /usr/bin/php8.3 /usr/bin/php8.3 -n -c /tmp/FnhPet /usr/bin/composer install --no-dev --no-progress (http block)
• https://api.github.com/repos/jquery/jquery-dist/zipball/c0185ab7c75aab88762c5aae780b9d83b80eda72
  • Triggering command: /usr/bin/php8.3 /usr/bin/php8.3 -n -c /tmp/o8QfYI /usr/bin/composer install (http block)
  • Triggering command: /usr/bin/php8.3 /usr/bin/php8.3 -n -c /tmp/FnhPet /usr/bin/composer install --no-dev --no-progress (http block)
• https://api.github.com/repos/mathiasbynens/punycode.js/zipball/0fbadd6e81f3a0ce06c38998040d6db6bdfbc5c9
  • Triggering command: /usr/bin/php8.3 /usr/bin/php8.3 -n -c /tmp/FnhPet /usr/bin/composer install --no-dev --no-progress (http block)
• https://api.github.com/repos/php-http/discovery/zipball/82fe4c73ef3363caed49ff8dd1539ba06044910d
  • Triggering command: /usr/bin/php8.3 /usr/bin/php8.3 -n -c /tmp/FnhPet /usr/bin/composer install --no-dev --no-progress (http block)
• https://api.github.com/repos/symfony/polyfill-mbstring/zipball/6d857f4d76bd4b343eac26d6b539585d2bc56493
  • Triggering command: /usr/bin/php8.3 /usr/bin/php8.3 -n -c /tmp/FnhPet /usr/bin/composer install --no-dev --no-progress (http block)
• https://api.github.com/repos/yiisoft/jquery-pjax/zipball/a9298d57da63d14a950f1b94366a864bc62264fb
  • Triggering command: /usr/bin/php8.3 /usr/bin/php8.3 -n -c /tmp/FnhPet /usr/bin/composer install --no-dev --no-progress (http block)
• https://api.github.com/repos/yiisoft/yii2-composer/zipball/b684b01ecb119c8287721def726a0e24fec2fef2
  • Triggering command: /usr/bin/php8.3 /usr/bin/php8.3 -n -c /tmp/FnhPet /usr/bin/composer install --no-dev --no-progress (http block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Redo users list page using keyset / cursor pagination</issue_title>
<issue_description>Offset pagination creates too much load on MySQL.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Redo users list page using keyset / cursor pagination #1206

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.