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[bot] Add April 2026 Copilot CLI feature updates to course content#79

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[bot] Add April 2026 Copilot CLI feature updates to course content#79
DanWahlin wants to merge 1 commit intomainfrom
update/april-2026-cli-features-48e6da4baaba59cd

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What's New

Based on Copilot CLI releases from April 7–14, 2026, the following beginner-relevant features were not yet documented in the course:

New features found

Feature Release Description
/env command v1.0.25 (Apr 13) Shows all loaded environment details: instructions, MCP servers, skills, agents, and plugins
copilot mcp install (registry install) v1.0.25 (Apr 13) Install MCP servers from the official registry with guided, interactive configuration
--plan and --mode startup flags v1.0.23 (Apr 10) Launch Copilot directly in Plan mode or any specific mode without Shift+Tab
Agent skills frontmatter field v1.0.22 (Apr 9) Custom agents can declare skills to eagerly load at startup

Course sections updated

Chapter 01 — Setup and First Steps (01-setup-and-first-steps/README.md)

  • Added /env to the "Help and Feedback" slash commands table in the Additional Commands reference
  • Added a new callout explaining --plan and --mode startup flags, alongside the existing --autopilot note

Chapter 04 — Agents & Custom Instructions (04-agents-custom-instructions/README.md)

  • Added skills and model rows to the YAML Properties table
  • Added a callout explaining when and why to use the skills field (auto-loads skills at agent startup)

Chapter 06 — MCP Servers (06-mcp-servers/README.md)

  • Added a callout in the copilot mcp terminal commands section explaining copilot mcp install for registry-based guided setup

Source announcements

What was skipped (not beginner-relevant)

  • Plugin hooks receiving PLUGIN_ROOT env vars (v1.0.26-0, prerelease)
  • OpenTelemetry/monitoring topic (copilot help monitoring, v1.0.20)
  • Azure OpenAI BYOK configuration changes (advanced/enterprise)
  • ACP client MCP server provisioning (advanced)
  • --remote / /remote — already documented in ch01
  • .vscode/mcp.json deprecation — already documented in ch06

Generated by Course Updater · ● 1M ·

- Add /env slash command to ch01 reference table (v1.0.25)
- Add --plan and --mode startup flags note to ch01 (v1.0.23)
- Add skills field to agent YAML properties table in ch04 (v1.0.22)
- Add MCP registry install (copilot mcp install) to ch06 (v1.0.25)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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