[bot] Document v1.1.27–v1.1.28 features: Auto model explanation, discard diff changes, custom agent next steps

[DanWahlin]

What new features or changes were found

Two stable releases shipped in the past 7 days (both draft: false, prerelease: false):

Release	Published
v1.1.28	2026-10-09
v1.1.27	2026-10-07

The following features were identified as beginner-relevant based on the changelog:

1. Auto mode now explains model selection (v1.1.28) — When Auto is active, the conversation now shows which model was selected and a short explanation of why.
2. Discard file changes from the diff view (v1.1.27) — Learners can now discard a file's changes directly from the Changes tab, with a confirmation dialog before restoring.
3. Custom agents can suggest next steps (v1.1.28) — After finishing a response, a custom agent can now offer pre-filled, editable next-step prompts.

Features omitted as not beginner-relevant:

• "From your organization" plugin marketplace tab — enterprise-only feature
• Version history in artifact editor — intermediate/advanced
• Video attachments in media grid — not part of core course exercises
• Remote agent tool-call display — advanced/remote use case
• Various bug fixes — no course content impact

What sections were updated

File	Change
01-tour-the-app/README.md	Updated the Models and Reasoning Effort section to note that Auto mode now shows the selected model and its reason in the conversation.
03-development-workflows/README.md	Added a tip in the Inner Loop exercise (Changes tab step) that learners can discard unintended file changes from the diff view with a confirmation dialog.
04-skills-custom-agents/README.md	Added a tip after the custom-agent How It Works block explaining that agents may suggest next steps as pre-filled, editable prompts.

Source announcements

• Changelog: https://github.com/github/app/blob/main/changelog.md
• v1.1.28 release: https://github.com/github/app/releases/tag/v1.1.28
• v1.1.27 release: https://github.com/github/app/releases/tag/v1.1.27

Generated by Course Updater · ● 2M · ◷

[Copilot]

🟢 Approval recommended

The additions are accurate, beginner-friendly, and consistent with the stable release notes.

0 open findings

What changed in this PR

Updates beginner course documentation for GitHub Copilot app v1.1.27–v1.1.28.

Changes:

• Explains Auto model-selection details.
• Documents discarding file changes from diffs.
• Notes editable next-step prompts from custom agents.

File	Description
01-tour-the-app/​README.md	Documents Auto model explanations.
03-development-workflows/​README.md	Adds diff discard guidance.
04-skills-custom-agents/​README.md	Describes suggested next steps.

🧠 Review effort: Balanced

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