[bot] Update course content for Copilot CLI v1.0.55–v1.0.57 features

[DanWahlin]

What changed in Copilot CLI (past 7 days)

Reviewed releases v1.0.55 through v1.0.57-5 (May 25–June 1, 2026). The following beginner-relevant changes were identified:

Version	Feature	Beginner relevant?
v1.0.55	Custom agents and skills discovered recursively in subdirectories	✅ Yes — affects how learners organize files
v1.0.55	New /autopilot <objective> command (with /goal alias)	✅ Yes — new slash command in autopilot mode
v1.0.57-0	/diff now defaults to branch diff when no unstaged changes	✅ Yes — mentioned explicitly in Ch 03
v1.0.56	builtInAgents.rubberDuck setting	❌ Skip — advanced/config setting
v1.0.57-1	showTipsOnStartup setting	❌ Skip — minor UI preference
v1.0.57-4	preToolUse hook errors deny tool calls	❌ Skip — advanced hook/developer feature

Course sections updated

Chapter 01 — Setup and First Steps

• Updated the Autopilot callout to mention the new /autopilot <objective> slash command and its /goal alias, so beginners know they can give autopilot a specific focus once inside a session.

Chapter 03 — Development Workflows

• Rewrote the /diff description to accurately reflect that it shows unstaged changes by default, and falls back to the branch diff when no unstaged changes exist. Added a tip to help beginners who might be surprised by this behavior.

Chapter 04 — Agents & Custom Instructions

• Added a note after the agent locations table explaining that Copilot discovers agents recursively in subdirectories, so learners can organize agents into nested folders without breaking discovery.

Chapter 05 — Skills

• Added a matching note in the "How Copilot Finds Skills" section explaining recursive skill discovery, with an example of how skills can be grouped by category (e.g., security/, testing/).

Source announcements

• v1.0.55 release
• v1.0.57-0 release
• Copilot CLI changelog

Generated by Course Updater · ● 1.4M · ◷