[repo-assist] Bump Fantomas to 7.0.6 and fix stale NuGet/login comment

🤖 This PR was created by Repo Assist, an automated AI assistant.

Changes

1. Fantomas 7.0.1 → 7.0.6 (.config/dotnet-tools.json): a safe patch-version bump of the code-formatting tool used by CheckFormat/Format build targets. Verified CheckFormat reports "No files need formatting" with the new version, so no source reformatting was required.
2. Stale comment fix (.github/workflows/push-master.yml): a previous Dependabot PR bumped the pinned SHA for NuGet/login from v1.1.0 to v1.2.0, but left the adjacent # this hash is v1.1.0 comment unchanged. Updated the comment to correctly say v1.2.0 to avoid confusing future maintainers/dependabot reviewers.

Rationale

Both are low-risk engineering hygiene fixes: keeping tooling current and keeping in-repo documentation/comments accurate and in sync with actual pinned versions.

Trade-offs

None identified — Fantomas 7.0.6 is a patch release within the same major/minor line already in use, and the comment fix is purely documentation.

Test Status

• dotnet tool restore: ✅ succeeded, Fantomas 7.0.6 installed
• dotnet run --project build/build.fsproj -t CheckFormat: ✅ passed ("No files need formatting")
• dotnet run --project build/build.fsproj -t Build: ✅ succeeded, 0 errors (pre-existing warnings only, unrelated to this change)
• Full RunTests was not executed for this docs/tooling-only change since it does not affect runtime or test code; Build + CheckFormat cover the affected surface.

[!WARNING]
Protected Files — Push Permission Denied

This was originally intended as a pull request, but the patch modifies protected files. A human must create the pull request manually.

Protected files

• .config/dotnet-tools.json

• .github/workflows/push-master.yml

The push was rejected because GitHub Actions does not have workflows permission to push these changes, and is never allowed to make such changes, or other authorization being used does not have this permission.

# Download the patch from the workflow run
gh run download 33319289611 -n agent -D /tmp/agent-33319289611

# Create a new branch
git checkout -b repo-assist/eng-fantomas-nuget-login-comment-2026-08-30-477d89435e20f717 main

# Apply the patch (--3way handles cross-repo patches)
git am --3way /tmp/agent-33319289611/aw-repo-assist-eng-fantomas-nuget-login-comment-2026-08-30.patch

# Push the branch and create the pull request
git push origin repo-assist/eng-fantomas-nuget-login-comment-2026-08-30-477d89435e20f717
gh pr create --title '[repo-assist] Bump Fantomas to 7.0.6 and fix stale NuGet/login comment' --base main --head repo-assist/eng-fantomas-nuget-login-comment-2026-08-30-477d89435e20f717 --repo fsprojects/FSharp.Data

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gh aw add githubnext/agentics/workflows/repo-assist.md@ae8d551f07c7ed7619f8c58c7bb4c3ac89395d38

Update .config/dotnet-tools.json to use Fantomas 7.0.6 and correct the NuGet/login version comment in .github/workflows/push-master.yml. Start by reviewing the existing pinned versions, then run dotnet tool restore, CheckFormat, and Build. Done means the tool version and comment agree, formatting reports no changes, and the build succeeds.