docs: document the recently touched functions

[viceice]

Adds doc comments to recently touched and non-obvious code: the git install service, the install, prepare, apt, link, version and http services, and the version lint script. No behaviour changes.

Stacked on #7437.

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: ca2f7029-7d86-492e-9069-1bf7bd497ef1

📥 Commits

Reviewing files that changed from the base of the PR and between 37d9ccc and bebe26e.

📒 Files selected for processing (5)

• src/cli/install-tool/install-tool.service.ts
• src/cli/services/apt.service.ts
• src/cli/services/link-tool.service.ts
• src/cli/tools/git/index.ts
• tools/lint-versions.ts

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📝 Walkthrough

Walkthrough

This PR adds comments describing CLI package and tool installation, linking, Git version checks, and version lint functions. No executable behavior changed.

Changes

CLI and tool documentation

Layer / File(s)	Summary
Package installation and tool linking src/cli/services/apt.service.ts, src/cli/install-tool/install-tool.service.ts, src/cli/services/link-tool.service.ts	Comments describe package installation checks, the install and uninstall lifecycle, tool linking and testing, and shell wrapper creation and removal.
Git installation and version checks src/cli/tools/git/index.ts	Comments describe Git installation, safe-directory configuration, version testing, and installed-version lookup.
Version lint functions tools/lint-versions.ts	Comments describe repository-root file reading, failure reporting, and version comparison.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~4 minutes

Change: Other

Merge Risk: ⚪ Minimal · up to bebe2

This change documents existing tool behavior without changing how installation, linking, Git checks, or version linting run. No merge-blocking risk is identified.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 3 functions across 5 files.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: adding documentation comments to recently touched functions.

✨ Finishing Touches

📝 Generate docstrings

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• Create a new PR

🧪 Generate unit tests (beta)

• Commit to this branch
• Create a new PR

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[gitar-bot]

Code Review ✅ Approved 1 closed / 1 findings

🟢 Low risk · Adds comments across nine files; executable behavior remains unchanged.

Adds JSDoc comments to recently touched functions across multiple service files, addressing the docstring coverage advisory. The linkAndTest documentation notes the postInstall and link-recording steps that occur during the linking process.

✅ 1 closed

✅ Quality: linkAndTest doc leaves out the postInstall and link-recording steps

📄 src/cli/install-tool/install-tool.service.ts:332-335 📄 src/cli/install-tool/install-tool.service.ts:346-357
The new comment says linkAndTest links the version, records it as current and runs the test. The body also does two other things: it calls toolSvc.postInstall(version) (for git, that sets safe.directory system wide), and it calls _storeLinks to save the wrapper links. It also skips linking when the version is already current. Someone reading the doc would not expect a side effect like postInstall here. Add these steps to the comment.

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📋 Rules No rules evaluated

🧪 Functional validation Not enabled · Set up

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