chore(Action): add net9 pack action

[ArgoZhang]

Link issues

fixes #6988

Summary By Copilot

Regression?

• Yes
• No

Risk

• High
• Medium
• Low

Verification

• Manual (required)
• Automated

Packaging changes reviewed?

• Yes
• No
• N/A

☑️ Self Check before Merge

⚠️ Please check all items below before review. ⚠️

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• Merge the latest code from the main branch

Summary by Sourcery

Extend the GitHub Actions pack workflow by adding a dedicated NET9 job for packaging and publishing .NET 9 artifacts, update triggers to include the 'action' event, and rename the legacy pack job to NET10.

New Features:

• Add NET9 job in CI to restore, build, pack, and publish .NET 9 package to NuGet

Enhancements:

• Include 'action' event in pack workflow triggers
• Rename existing pack job to NET10 to target .NET 10

[sourcery-ai]

Reviewer's Guide

This PR enhances the GitHub Actions packaging workflow by adding a dedicated .NET 9 pack-and-publish job, updating triggers to include the “action” event, and separating the original pack job into a NET10 job.

Flow diagram for new NET9 pack and publish process

flowchart TD
  A["Start NET9 Job"]
  B["Checkout repository"]
  C["Setup .NET 9 SDK"]
  D["Cache NuGet packages"]
  E["Restore dependencies"]
  F["NuGet login"]
  G["Build project"]
  H["Pack project"]
  I["Push package to NuGet"]

  A --> B --> C --> D --> E --> F --> G --> H --> I

Loading

File-Level Changes

Change	Details	Files
Expanded workflow triggers to include a new GitHub event	Added “action” to the push event triggers	.github/workflows/pack.yml
Introduced a NET9 packaging job	Checkout code using actions/checkout Setup .NET 9.0 SDK Cache and restore NuGet packages Authenticate with NuGet and retrieve API key Build, pack, and push NuGet package with skip-duplicate flag	.github/workflows/pack.yml
Renamed existing pack job to NET10	Changed job identifier from “pack” to “NET10” to distinguish from new job	.github/workflows/pack.yml

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#6988	Add a GitHub Action to pack the project using .NET 9 (net9).	✅

Possibly linked issues

• chore(Action): add net9 pack action #6988: The PR adds a .NET 9 pack action by modifying the pack.yml workflow, directly addressing the issue's request for a net9 pack action.
• chore(Action): add net9 pack action #6988: The PR adds a new GitHub Actions workflow for .NET 9, including setup, build, pack, and publish to NuGet.

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[Copilot]

Pull Request Overview

This PR adds a new .NET 9 pack action to the GitHub workflow for building and publishing NuGet packages. The changes enable the project to support both .NET 9 and .NET 10 build pipelines.

Key Changes:

• Updated language version to preview to support newer C# features
• Added new NET9 job to pack workflow for .NET 9.0.x builds
• Renamed existing pack job to NET10 for clarity

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
Directory.Build.props	Changed LangVersion from 'latest' to 'preview' to enable preview language features
.github/workflows/pack.yml	Added NET9 build job and renamed existing job to NET10; added 'action' branch trigger

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[sourcery-ai]

Hey there - I've reviewed your changes - here's some feedback:

• Consider consolidating the NET9 and NET10 jobs into a matrix strategy to avoid duplicating the same steps for multiple SDK versions.
• Rename the job identifiers to follow our standard naming conventions (e.g., lowercase with hyphens) for consistency across workflows.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- Consider consolidating the NET9 and NET10 jobs into a matrix strategy to avoid duplicating the same steps for multiple SDK versions.
- Rename the job identifiers to follow our standard naming conventions (e.g., lowercase with hyphens) for consistency across workflows.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (58180ef) to head (49903a3).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #6989   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          741       741           
  Lines        32365     32365           
  Branches      4481      4481           
=========================================
  Hits         32365     32365           

Flag	Coverage Δ
BB	100.00% <ø> (?)

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