feat(execution): pack as a global tool under the frameshift command

[samtrion]

Summary

• Enable packing for NetEvolve.FrameShift.Execution, previously opted out with IsPackable=false.
• Configure the project as a .NET tool (PackAsTool, ToolCommandName=frameshift) so the mutation execution CLI can be installed with dotnet tool install and invoked as frameshift instead of only run from source.
• Add a project-level README.md (required for PackageReadmeFile) and update the CLI usage text and its snapshots from frameshift-execute to frameshift to match the new tool command name.

Test plan

• dotnet pack src/NetEvolve.FrameShift.Execution/NetEvolve.FrameShift.Execution.csproj -c Release succeeds
• dotnet test tests/NetEvolve.FrameShift.Execution.Tests.Unit passes
• dotnet test tests/NetEvolve.FrameShift.Execution.Tests.Integration passes

[coderabbitai]

Important

Review skipped

Auto reviews are limited based on label configuration.

🏷️ Required labels (at least one) (1)

• state:ready for merge

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: fac4b329-6ddd-404e-9e62-4559e1c6eaef

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.41%. Comparing base (e4b0a65) to head (1affe4c).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #106      +/-   ##
==========================================
+ Coverage   95.38%   95.41%   +0.02%     
==========================================
  Files         107      107              
  Lines        6677     6677              
  Branches     1389     1389              
==========================================
+ Hits         6369     6371       +2     
+ Misses        141      139       -2     
  Partials      167      167              

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.