Add stub Slack safe-output job to smoke-copilot for testing

[Copilot]

Adds a stub send-slack-message custom safe-output job to the smoke-copilot workflow for testing the custom safe-jobs architecture without external dependencies.

Implementation

• Custom job definition in safe-outputs.jobs.send-slack-message

  • Reads agent output from GH_AW_AGENT_OUTPUT
  • Filters for items with type: send_slack_message
  • Logs message to console and step summary
  • Does not perform actual Slack API calls

• Workflow instructions updated to include step 4: use send_slack_message tool with summary message

• Compiled lock file generates separate send_slack_message job with proper dependency chain (agent → detection → send_slack_message → conclusion)

Agent Output Format

{
  "items": [
    {
      "type": "send_slack_message",
      "message": "Smoke test 123456: All tests passed! ✅"
    }
  ]
}

The stub writes a formatted preview to $GITHUB_STEP_SUMMARY instead of calling Slack APIs, making it suitable for testing without secret configuration.

Original prompt

Add a simple safe-output job (custom) in smoke-copilot that sends a message to slack (it's a stub, it does not do anything). This is needed for testing.

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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.

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Changeset

• Type: patch
• Description: Added a stub Slack safe-output job for the smoke Copilot workflow to test Slack tooling without sending messages.

Ahoy! This treasure was crafted by 🏴‍☠️ Changeset Generator

[github-actions]

🎉 Yo ho ho! Changeset Generator found the treasure and completed successfully! ⚓💰

[github-actions]

🎬 THE END — Smoke Claude MISSION: ACCOMPLISHED! The hero saves the day! ✨

[github-actions]

✨ The prophecy is fulfilled... Smoke Codex has completed its mystical journey. The stars align. 🌟

[github-actions]

📰 BREAKING: Smoke Copilot is now investigating this pull request. Sources say the story is developing...

[github-actions]

Agent Container Tool Check

Tool	Status	Version
bash	✅	5.2.21
sh	✅	available
git	✅	2.52.0
jq	✅	1.7
yq	✅	4.50.1
curl	✅	8.5.0
gh	✅	2.86.0
node	✅	24.13.0
python3	✅	3.13.11
go	✅	1.24.12
java	❌	not found
dotnet	❌	not found

Result: 10/12 tools available ⚠️

Missing tools:

• java: command not found
• dotnet: command not found

Status: PARTIAL - Core development tools (shell, git, web, scripting) are available. Java and .NET runtimes are not installed in this container.

AI generated by Agent Container Smoke Test

[github-actions]

Smoke Test Results: PASS ✅

Last 2 Merged PRs:

• Fix: Add temporary ID resolution to update_project handler #12805: Fix: Add temporary ID resolution to update_project handler
• Add timing instrumentation to MCP gateway setup scripts #12803: Add timing instrumentation to MCP gateway setup scripts

Test Results:

• ✅ GitHub MCP
• ✅ Safe Inputs GH CLI
• ✅ Serena MCP
• ✅ Playwright
• ✅ File Writing
• ✅ Bash Tool
• ✅ Discussion Interaction
• ✅ Build gh-aw

Overall: PASS

cc @pelikhan @Copilot

AI generated by Smoke Copilot

[github-actions]

Smoke Test Results

PRs:

• Add workflow: githubnext/agentics/weekly-research #8: Add workflow: githubnext/agentics/weekly-research
• Remove ai-inference, opencode, genaiscript agentic engines for now #10: Remove ai-inference, opencode, genaiscript agentic engines

Tests:
✅ GitHub MCP | ✅ GH CLI | ✅ Serena | ✅ Make | ✅ Playwright | ✅ Tavily | ✅ File Write | ✅ Bash | ✅ Discussion

Status: PASS

AI generated by Smoke Claude

[github-actions]

📰 VERDICT: Smoke Copilot has concluded. All systems operational. This is a developing story. 🎤

[github-actions]

GitHub MCP merged PRs: ✅ Fix: Add temporary ID resolution to update_project handler; Add timing instrumentation to MCP gateway setup scripts
Safeinputs gh PR list: ✅ [WIP] Fix missing GitHub Project URL in workflow; Add retry progress logging to MCP gateway health checks
Serena activate project: ✅
Playwright GitHub title: ✅
Tavily search results: ✅
File write + cat: ✅
Discussion query + comment: ✅
Build make build: ✅
Overall: PASS

AI generated by Smoke Codex