[bot] Document /plugin dashboard changes and hook OTel trace context

[github-actions]

Summary

Reviewed the Copilot CLI changelog (github/copilot-cli, releases through v1.0.82-2) for changes from the past 7 days and cross-checked them against the Learning Hub. Network access to github.blog, code.visualstudio.com, and nishanil.github.io was blocked by the sandbox proxy, so this pass relied on the CLI changelog and GitHub API release/commit data only.

What changed upstream (v1.0.81, 2026-08-27)

• The /plugins dashboard command was removed. Its functionality is now surfaced through /plugin, /mcp, and /skills — all available to everyone (the PLUGINS_DASHBOARD env var opt-out is also gone).
• Enabling/disabling hooks and LSP servers directly is temporarily unavailable, since those toggles only existed in the removed /plugins dashboard.
• The /plugin dashboard now flags installed plugins/marketplaces with newer upstream versions and offers an Update action.
• Hooks can now receive the current OpenTelemetry trace context (traceparent/tracestate), including as env vars for command hooks, so hook executions can be correlated with session telemetry spans.
• MCP 2026-07-28 protocol support shipped across CLI, SDK, IDE, and in-memory clients (internal protocol-version bump, not user-facing enough to warrant new doc content).

Learning Hub updates

• installing-and-using-plugins.md: Replaced the outdated /plugins command documentation (from v1.0.76) with the new /plugin / /mcp / /skills dashboard entry points, noted the removed hook/LSP toggle limitation, and documented the new "flag outdated + Update" dashboard behavior.
• automating-with-hooks.md: Added a new "OpenTelemetry Trace Context (v1.0.81+)" subsection documenting the traceparent/tracestate hook input fields and corresponding TRACEPARENT/TRACESTATE env vars for command hooks.

No new page was warranted — both changes fit naturally as updates to existing sections. The cli-for-beginners section was left untouched per instructions.

Sources

• https://github.com/github/copilot-cli/blob/main/changelog.md (v1.0.81 entry, 2026-08-27)
• GitHub Releases for github/copilot-cli (v1.0.81 through v1.0.82-2)

Warning

Firewall blocked 3 domains

The following domains were blocked by the firewall during workflow execution:

• code.visualstudio.com
• github.blog
• nishanil.github.io

To allow these domains, add them to the network.allowed list in your workflow frontmatter:

network:
  allowed:
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    - "code.visualstudio.com"
    - "github.blog"
    - "nishanil.github.io"

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