[Arthurvdv]

Summary

Pin the net10.0 DevTools reference to the lowest net10.0 marketplace release, VSIX 16.10.2902954 (SDK 16.10.44.19458), instead of 18.0.2726309 (18.0.41.39415). Files changed: csproj comment, both workflows (version and removal of the path-in-archive override), CLAUDE.md DevTools table, .claude/rules/devtools-tfm.md (new "Which version to pin" section and layout-probe checklist item).

Mechanism

The Analyzers CI compiles its cops against the lowest available SDK per TFM. That floor moves down whenever Microsoft publishes a build of a TFM for an older AL major. Net10.0 VSIXes now exist for AL 16.10 and 17.10, so the floor is 16.10.44.19458. A RoslynTestKit lib compiled against 18.0.41.39415 fails every consumer test leg between those versions with CS1705 (hard compiler error), and the runtime would refuse to bind a lower assembly version anyway. Compiling against the lowest release keeps the lib usable on all newer SDKs. The 16.10 VSIX uses the legacy extension/bin/Analyzers layout, so the explicit path-in-archive: 'extension/bin' is removed (the action input stays for AL 18+).

Verification

• a. dotnet restore and dotnet pack -c Release succeed; nupkg contains lib/netstandard2.1, lib/net8.0, lib/net10.0 RoslynTestKit.dll. net10.0 DLLs were fetched with the repo's three scripts from VSIX 16.10.2902954 (FileVersion 16.10.44.19458).
• b. Referenced assembly versions (System.Reflection.Metadata):
  • netstandard2.1: Nav.CodeAnalysis and .Workspaces 12.0.11.58921
  • net8.0: 16.0.22.22232
  • net10.0: 16.10.44.19458
• c. Consumer smoke test (Analyzers origin/main, throwaway worktree, SDK folder with net10.0 = 16.10.44.19458): dotnet test ALCops.LinterCop.Test with RoslynTestKit 1.5.0 fails with CS1705 (RoslynTestKit uses Nav.CodeAnalysis 18.0.41.39415, higher than the referenced 16.10). With the packed 1.5.1 package it passes: Passed 392, Failed 0, Skipped 4.

Review notes

• Microsoft.CodeAnalysis.Common 4.14.0 / ApprovalTests 7.0.0 against the 16.10 SDK: the three-TFM pack against the 16.10 DLLs succeeded and the consumer smoke test passed 392 tests on SDK 16.10.44.19458; Analyzers test projects pin Microsoft.CodeAnalysis.Common 4.14.0 on every leg too.
• No CI assertion of the extracted DLL version: the 16.10 layout was verified by probing the archive, and a wrong layout fails the pack (missing HintPath target) rather than passing silently. A version assertion would be a pre-existing gap shared by all TFMs, out of scope.
• net8.0 and netstandard2.1 pins are at or below the consumer floors (16.0.22.22232 < 16.0.27.57058; 12.0.11.58921 < 12.0.13.24028).

Release

Merging to master publishes ALCops.RoslynTestKit 1.5.1 to NuGet.org and GitHub Packages (+semver: patch).

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