[4.x] Compact shard filter regex#1675

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oddvalue wants to merge 2 commits intopestphp:4.xfrom

oddvalue:feat/shard-filter-compression

Commits on Apr 14, 2026

Enforce filter length validation and add tests for `Shard` plugin
oddvalue
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Optimize `buildFilterArgument` in `Shard` plugin for compact regex generation and add comprehensive tests
oddvalue
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