Refactor ClientCard memory management #1089

Job	Run time
prepare	10s
prepare-static-dependencies	22s
build-linux (ubuntu-arm-static-link)	2m 47s
build-macos (macos-26-intel-cross-compile-static-link)	2m 18s
build-linux (ubuntu-24)	1m 54s
build-macos (macos-15-intel)	2m 59s
build-linux (ubuntu-static-link)	3m 0s
build-macos (macos-26-arm-static-link)	2m 24s
build-windows (windows-x64-no-simd)	3m 32s
build-linux (ubuntu-22)	2m 25s
build-windows (windows-arm64)	5m 12s
build-windows (windows-x86-sse2)	3m 30s
build-macos (macos-26-arm)	1m 6s
build-windows (windows-x64-avx2)	3m 42s
build-windows (windows-2025)	4m 22s
	39m 43s

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