Update Learning Hub with recent Copilot CLI v1.0.81/82 changes (#2900)

- Document plugins dashboard (/plugin, /mcp, /skills) becoming default for all users, with the PLUGINS_DASHBOARD opt-out and its later removal
- Add voice dictation (Ctrl+Space) to keyboard shortcuts
- Note worktree/move switch reliability fix in v1.0.82 for messages typed mid-switch

Sources:
- github/copilot-cli changelog.md (v1.0.81, v1.0.82 entries)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

website/src/content/docs/learning-hub/copilot-configuration-basics.md

@@ -3,7 +3,7 @@ title: 'Copilot Configuration Basics'
 description: 'Learn how to configure GitHub Copilot at user, workspace, and repository levels to optimize your AI-assisted development experience.'
 authors:
   - GitHub Copilot Learning Hub Team
-lastUpdated: 2026-08-19
+lastUpdated: 2026-09-01
 estimatedReadingTime: '10 minutes'
 tags:
   - configuration
@@ -677,6 +677,10 @@ Use `/diagnose` when a session is behaving unexpectedly — it inspects session
 
 **Inline image rendering** (v1.0.64+): The CLI can display images inline in the terminal when your terminal supports it. If an MCP tool, agent, or attachment returns an image, it is rendered directly in the conversation timeline rather than shown as a file path or URL. This works in terminals with image protocol support (such as iTerm2, Kitty, Wezterm, and tmux with appropriate configuration).
 
+**Voice dictation** *(v1.0.81+)*: Press **Ctrl+Space** to toggle voice dictation on or off, letting you speak a prompt instead of typing it.
+
+**Worktree switch reliability (v1.0.82+)**: If you start typing a new message while `/worktree` or `/move` is preparing a worktree switch, that message is no longer dropped when the switch completes.
+
 The `/ask` command lets you ask a quick question without affecting your conversation history. The current session context is preserved, so you can use it for one-off lookups without derailing an ongoing task. Responses are rendered as full markdown, including tables and formatted links:
 
 ```