fix: update instructions and enhance command clarity in setup steps

[andy1li]

• Corrected wording in the task card to refer to a single step.
• Added comments to command variants in the CLI connection setup for better understanding.

Checklist:

• I've thoroughly self-reviewed my changes
• I've added tests for my changes, unless they affect admin-only areas (or are otherwise not worth testing)
• I've verified any visual changes using Percy (add a commit with [percy] in the message to trigger)

---

Note

Low Risk
Low risk copy-only changes to course/setup UI text and displayed terminal commands with no behavioral logic changes.

Overview
Updates the first-stage task card copy to reference a single step instead of multiple steps.

Annotates the displayed CLI install commands for Linux/macOS and PowerShell with inline comments ("Install CodeCrafters CLI") while keeping the subsequent codecrafters ping command unchanged.

^{Reviewed by Cursor Bugbot for commit 7c43581. Bugbot is set up for automated code reviews on this repo. Configure here.}

[codecov]

Bundle Report

Changes will decrease total bundle size by 1.59kB (-0.0%) ⬇️. This is within the configured threshold ✅

Detailed changes

Bundle name	Size	Change
client-array-push	39.47MB	-1.59kB (-0.0%) ⬇️

Affected Assets, Files, and Routes:

view changes for bundle: client-array-push

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
assets/chunk.*.js	53 bytes	388.56kB	0.01%
assets/chunk.*.js	-82 bytes	41.53kB	-0.2%
assets/chunk.*.js	-1.56kB	3.43MB	-0.05%

[github-actions]

Test Results

  1 files  ±0    1 suites  ±0   8m 35s ⏱️ - 3m 1s
707 tests ±0  644 ✅ +2  63 💤 ±0  0 ❌ ±0 
722 runs  ±0  659 ✅ +4  63 💤 ±0  0 ❌  - 2 

Results for commit 7c43581. ± Comparison against base commit c167f5e.

♻️ This comment has been updated with latest results.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ All tests successful. No failed tests found.

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