Repository navigation

perf: single-pass contiguous DELETE + BTree separator-delete fix #963

Job	Run time
Build and Test (windows-latest)	4m 24s
Build and Test (macos-latest)	2m 31s
Build and Test (ubuntu-latest)	2m 44s
Pack NuGet Packages	0s
Publish to NuGet.org	-1s
	9m 38s