feat: validate uv workspace members/excludes and discover parent workspaces (Fixes #290) #1324

Job	Run time
Tests in Containers (ci-homebrew-container, ubuntu-latest, homebrew/brew, x86_64-unknown-linux-musl)	3m 54s
Builds (windows-latest, aarch64-pc-windows-msvc)	4m 50s
Tests (windows-latest, x86_64-pc-windows-msvc, yes)	8m 33s
Builds (ubuntu-latest, x86_64-unknown-linux-musl, yes)	2m 16s
Env Tests (ci-poetry-global, ubuntu-latest, x86_64-unknown-linux-musl)	2m 56s
Builds (macos-latest, x86_64-apple-darwin, yes)	3m 28s
Tests (ubuntu-latest, x86_64-unknown-linux-musl, yes)	9m 20s
Tests in Containers (ci-jupyter-container, ubuntu-latest, mcr.microsoft.com/devcontainers/univers...	4m 40s
Tests (macos-latest, x86_64-apple-darwin, yes)	14m 29s
Builds (windows-latest, x86_64-pc-windows-msvc)	1m 39s
Env Tests (ci-poetry-custom, windows-latest, x86_64-pc-windows-msvc)	5m 45s
Builds (macos-14, aarch64-apple-darwin, yes)	4m 2s
Tests (macos-14, aarch64-apple-darwin, yes)	13m 3s
Env Tests (ci-poetry-global, windows-latest, x86_64-pc-windows-msvc)	5m 32s
Env Tests (ci-poetry-custom, ubuntu-latest, x86_64-unknown-linux-musl)	2m 55s
Env Tests (ci-poetry-project, windows-latest, x86_64-pc-windows-msvc)	6m 45s
Env Tests (ci-poetry-project, ubuntu-latest, x86_64-unknown-linux-musl)	3m 2s
	1h 37m 9s

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