feat: restructure workflows to use latest conventions, remove step 4b, simplify step1

[FidelusAleksander]

Summary

This pull request includes updates to improve workflows, enhance instructions, and streamline the use of GitHub Copilot in the exercise toolkit. The most significant changes involve upgrading workflow dependencies, improving issue handling, and refining instructional content.

Workflow Updates:

• .github/workflows/0-start-exercise.yml, .github/workflows/1-preparing.yml, .github/workflows/2-first-introduction.yml, .github/workflows/3-copilot-edits.yml: Updated references from v0.6.0 to v0.7.0 for skills/exercise-toolkit workflows, ensuring compatibility with the latest version. [1] [2] [3] [4]
• .github/workflows/0-start-exercise.yml, .github/workflows/1-preparing.yml, .github/workflows/2-first-introduction.yml, .github/workflows/3-copilot-edits.yml: Replaced manual GitHub issue comment handling with GrantBirki/comment@v2.1.1 for improved automation and maintainability. [1] [2] [3] [4]

Instructional Content Enhancements:

• .github/steps/1-preparing.md: Clarified instructions to use Copilot Ask Mode for prompts and updated the example prompt to directly include the branch name "accelerate-with-copilot" for better user guidance. [1] [2]
• .github/steps/x-review.md: Updated the link to GitHub Skills exercises to use the new learn.github.com domain for consistency and accuracy.

Issue Handling Improvements:

• .github/workflows/0-start-exercise.yml, .github/workflows/1-preparing.yml, .github/workflows/2-first-introduction.yml, .github/workflows/3-copilot-edits.yml: Transitioned from using ISSUE_URL to ISSUE_NUMBER and ISSUE_REPOSITORY for more precise issue tracking and handling. [1] [2] [3] [4]

These changes collectively enhance the usability, maintainability, and clarity of the exercise toolkit workflows and instructions.

Changes

Closes:

Task list

• For workflow changes, I have verified the Actions workflows function as expected.
• For content changes, I have reviewed the style guide.

[Copilot]

Pull Request Overview

A restructuring of exercise workflows to adopt the latest conventions, remove an unused step 4b, and streamline the initial setup.

• Upgraded all skills/exercise-toolkit workflow references from v0.6.0 to v0.7.0, replaced manual gh issue comment steps with GrantBirki/comment@v2.1.1, and switched from ISSUE_URL to ISSUE_REPOSITORY/ISSUE_NUMBER.
• Deleted the deprecated 4b-copilot-on-github.yml workflow and simplified the enable/disable logic for step 1.
• Enhanced instructional markdown by fixing Handlebars syntax, adding Copilot Ask Mode guidance, and updating exercise links.

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
.github/workflows/4b-copilot-on-github.yml	Removed unused step-4b workflow.
.github/workflows/4-copilot-on-github.yml	Bumped to v0.7.0, refactored comment posting to GrantBirki/comment.
.github/workflows/3b-copilot-agent-mode.yml	Renamed and streamlined keyword checks, updated comment action usage.
.github/workflows/3-copilot-edits.yml	Upgraded version, unified comment edits via GrantBirki/comment.
.github/workflows/2-first-introduction.yml	Updated toolkit version, refactored comment updates, and env vars.
.github/workflows/1-preparing.yml	Bumped version, replaced manual comments, and simplified next-step.
.github/workflows/0-start-exercise.yml	Switched to v0.7.0, replaced comment actions, and adjusted env setup.
.github/steps/1-preparing.md	Corrected variable syntax and clarified Copilot Ask Mode instruction.
.github/steps/x-review.md	Updated external link to use learn.github.com.

Comments suppressed due to low confidence (3)

.github/workflows/4-copilot-on-github.yml:54

• The REVIEW_FILE environment variable is referenced but never defined in this job. Please define it (e.g., env: REVIEW_FILE: …) or use the correct variable name.

          file: ${{ env.REVIEW_FILE }}

.github/workflows/3b-copilot-agent-mode.yml:54

• This step references ${{ env.ISSUE_REPOSITORY }} and ${{ env.ISSUE_NUMBER }} but those environment variables aren’t set for this job. Add them under env: so the comment action can target the correct issue.

        uses: GrantBirki/comment@v2.1.1

.github/workflows/3-copilot-edits.yml:71

• The id for the styles.css check is set to check-app-js, duplicating the prior step and not matching the later steps.check-styles-css reference. Rename this to check-styles-css for clarity and to align with the results-table keys.

        id: check-app-js