Add always required keys and parse empty field #287

Job	Run time
Build on macOS for iphonesimulator	1m 8s
Build on Ubuntu for androidarm	59s
Build on macOS for macos	1m 40s
Build on Windows (windows-2025, arm64)	4m 14s
Build on Ubuntu for androidx86_64	1m 2s
Run CodeQL tests	3m 50s
Build on Ubuntu for androidarm64	1m 1s
Build on macOS for iphoneos	1m 12s
Build on Ubuntu 22.04 arm64	2m 29s
Build on Ubuntu 25.10 amd64	2m 50s
Build on Ubuntu 24.04 amd64	2m 44s
Build on Ubuntu 25.10 arm64	2m 55s
Build on Windows (windows-2025, x64)	5m 35s
Build on Ubuntu 24.04 arm64	2m 34s
Build on Ubuntu 22.04 amd64	2m 22s
Run Coverity tests	-1s
Deploy pages	-1s
	36m 33s

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