Require Showboat evidence in agent-authored PRs

[Copilot]

Summary

This updates repo policy so PRs opened by Claude Code/Copilot must include a Showboat demo in the PR body. It also adds a concrete rollout plan and a PR template section that standardizes demo evidence and replay commands.

• Policy
  • Added AGENTS.md requirement: agent-authored PRs must include a Showboat demo, with replay commands, and CLI demos for non-UI changes.
• PR enforcement surface
  • Added .github/pull_request_template.md with a required Showboat demo section and checklist item.
• Operational plan
  • Added plans/showboat-agent-pr-demos.md describing goal, workflow, and repo enforcement points.

## Showboat demo

Demo:

Commands used:

Showboat demo

Demo: N/A — docs/process-only PR establishing Showboat policy and template requirements.

Commands used: N/A

Validation

• ruff check src/ tests/ selftests/ examples/
• ruff format --check src/ tests/ selftests/ examples/
• pytest selftests/ -q
• Showboat demo added (or N/A with explanation)

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• astral.sh
  • Triggering command: /usr/bin/curl curl -LsSf REDACTED (dns block)
• simonwillison.net
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.