[bot] docs: update Learning Hub for Copilot CLI v1.0.15–v1.0.16 changes

[github-actions]

What's New

Copilot CLI released v1.0.15 (2026-04-01) and v1.0.16 (2026-04-02) with several noteworthy changes. This PR updates three Learning Hub pages to document the features that weren't yet covered.

Changes Found

v1.0.16 (2026-04-02)

• PermissionRequest hook — new hook event that fires when the CLI shows a permission prompt to the user, allowing scripts to programmatically approve or deny it (distinct from preToolUse which blocks/allows tool calls)
• marketplaces repository setting removed — replaced by extraKnownMarketplaces (the old setting was already deprecated; now fully removed)

v1.0.15 (2026-04-01)

• Ctrl+D no longer queues messages — use Ctrl+Q or Ctrl+Enter instead (behavioral change that could confuse users with existing muscle memory)

Already documented in prior Learning Hub updates: postToolUseFailure hook, mcp.config.* RPCs, /mcp auth, device code flow, /share html, camelCase config settings.

Sections Updated

automating-with-hooks.md

• Added PermissionRequest to the Hook Events table
• Added new practical example section "Auto-Approve Permissions in CI with PermissionRequest" with a JSON hook config and a bash policy script
• Updated lastUpdated date to 2026-04-02

copilot-configuration-basics.md

• Added a note on Ctrl+Q / Ctrl+Enter as the new queue shortcuts (and that Ctrl+D no longer queues) in the CLI Session Commands section
• Updated lastUpdated date to 2026-04-02

installing-and-using-plugins.md

• Added a new sub-section "Sharing Marketplace Registrations Across a Team" documenting the extraKnownMarketplaces config setting with a JSON example
• Noted that this replaces the old marketplaces setting removed in v1.0.16
• Updated lastUpdated date to 2026-04-02

Source Announcements

• v1.0.16 release notes
• v1.0.15 release notes
• copilot-cli changelog

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