ci: add demo as part of ci so that the demos stay up to date and functional

[prayagupa]

Description

Add a Demos CI workflow that runs the AGT demos on every push and pull request, so the runnable demos stay functional and never drift from the codebase. The LLM-driven demo is exercised against a small open-source model (Meta Llama 3.2 3B) served locally by Ollama — no paid API keys or secrets required.

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update
• Maintenance (dependency updates, CI/CD, refactoring)
• Security fix

Package(s) Affected

• agent-os-kernel
• agent-mesh
• agent-runtime
• agent-sre
• agent-governance
• docs / root

Checklist

• My code follows the project style guidelines (ruff check)
• I have added tests that prove my fix/feature works
• All new and existing tests pass (pytest)
• I have updated documentation as needed
• I have signed the Microsoft CLA

Attribution & Prior Art

• This contribution does not contain code copied or derived from other projects without attribution
• Any external projects that inspired this design are credited in code comments or documentation
• If this PR implements functionality similar to an existing open-source project, I have listed it below

Prior art / related projects (if any):

AI Assistance

• I can explain every meaningful change in this PR: what it does, why, and what tradeoffs were considered
• I have run tests and verification appropriate for this change
• No part of this PR was autonomously submitted by an AI agent without my review
• I have not used AI to generate review comments on others' PRs

If AI tools materially shaped this change, briefly note what was used:

IP, Patents, and Licensing

• This contribution does not implement patent-pending or patent-encumbered techniques
• This contribution does not require an NDA or licensing agreement to understand or use
• Any AI tools used have terms compatible with the MIT License

Related Issues

[github-actions]

PR Review Summary

Check	Status	Details
🔍 Code Review	⚠️ Missing	No current-run comment
🛡️ Security Scan	⚠️ Missing	No current-run comment
🔄 Breaking Changes	⚠️ Missing	No current-run comment
📝 Docs Sync	⚠️ Missing	No current-run comment
🧪 Test Coverage	⚠️ Missing	No current-run comment

Verdict: ⚠️ AI review incomplete; ready for human review

AI review comments are untrusted advisory output. The summary reports workflow-generated completion status only, not model-authored pass/fail claims.

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

OpenSSF Scorecard

Package	Version	Score	Details
actions/actions/cache	55cc8345863c7cc4c66a329aec7e433d2d1c52a9	🟢 6.4	Details Check Score Reason Code-Review 🟢 10 all changesets reviewed Maintained 🟢 10 13 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10 Packaging ⚠️ -1 packaging workflow not detected Binary-Artifacts 🟢 10 no binaries found in the repo Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected CII-Best-Practices ⚠️ 0 no effort to earn an OpenSSF best practices badge detected Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions Pinned-Dependencies 🟢 3 dependency not pinned by hash detected -- score normalized to 3 Fuzzing ⚠️ 0 project is not fuzzed License 🟢 10 license file detected Signed-Releases ⚠️ -1 no releases found Security-Policy 🟢 9 security policy file detected SAST 🟢 10 SAST tool is run on all commits Branch-Protection ⚠️ 1 branch protection is not maximal on development and all release branches
actions/actions/checkout	df4cb1c069e1874edd31b4311f1884172cec0e10	🟢 6.9	Details Check Score Reason Maintained 🟢 10 24 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10 Code-Review 🟢 10 all changesets reviewed Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Binary-Artifacts 🟢 10 no binaries found in the repo Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions CII-Best-Practices ⚠️ 0 no effort to earn an OpenSSF best practices badge detected License 🟢 10 license file detected Fuzzing ⚠️ 0 project is not fuzzed Packaging ⚠️ -1 packaging workflow not detected Pinned-Dependencies 🟢 3 dependency not pinned by hash detected -- score normalized to 3 Signed-Releases ⚠️ -1 no releases found Security-Policy 🟢 9 security policy file detected SAST 🟢 10 SAST tool is run on all commits Branch-Protection 🟢 5 branch protection is not maximal on development and all release branches
actions/actions/setup-python	a309ff8b426b58ec0e2a45f0f869d46889d02405	🟢 6.6	Details Check Score Reason Code-Review 🟢 10 all changesets reviewed Maintained 🟢 10 17 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10 Binary-Artifacts 🟢 10 no binaries found in the repo CII-Best-Practices ⚠️ 0 no effort to earn an OpenSSF best practices badge detected Packaging ⚠️ -1 packaging workflow not detected Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Pinned-Dependencies 🟢 7 dependency not pinned by hash detected -- score normalized to 7 Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions Fuzzing ⚠️ 0 project is not fuzzed License 🟢 10 license file detected Signed-Releases ⚠️ -1 no releases found Security-Policy 🟢 9 security policy file detected Branch-Protection ⚠️ 0 branch protection not enabled on development/release branches SAST 🟢 9 SAST tool is not run on all commits -- score normalized to 9
actions/dorny/paths-filter	fbd0ab8f3e69293af611ebaee6363fc25e6d187d	🟢 4.6	Details Check Score Reason Binary-Artifacts 🟢 10 no binaries found in the repo Maintained 🟢 10 5 commit(s) and 24 issue activity found in the last 90 days -- score normalized to 10 Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Code-Review 🟢 3 Found 9/24 approved changesets -- score normalized to 3 Packaging ⚠️ -1 packaging workflow not detected Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions CII-Best-Practices ⚠️ 0 no effort to earn an OpenSSF best practices badge detected Pinned-Dependencies ⚠️ 0 dependency not pinned by hash detected -- score normalized to 0 Security-Policy ⚠️ 0 security policy file not detected Fuzzing ⚠️ 0 project is not fuzzed License 🟢 10 license file detected Signed-Releases ⚠️ -1 no releases found Branch-Protection ⚠️ -1 internal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md SAST ⚠️ 0 SAST tool is not run on all commits -- score normalized to 0

Scanned Files

• .github/workflows/demos.yml

[github-actions]

🤖 AI Agent: code-reviewer — View details

AI-generated review output. Treat it as untrusted analysis and verify before acting.

TL;DR: 0 blockers, 1 warning. The CI addition is functional but has a minor supply-chain safety concern.

#	Sev	Issue	Where
1	Warn	Ollama binary download lacks GPG signature verification	.github/workflows/demos.yml

Action items:

1. Add GPG signature verification for the Ollama binary download to ensure supply-chain integrity.

Warnings: fine as follow-up PRs.

[github-actions]

🤖 AI Agent: breaking-change-detector — API Compatibility

AI-generated review output. Treat it as untrusted analysis and verify before acting.

API Compatibility

No breaking changes detected.

[github-actions]

🤖 AI Agent: test-generator — View details

AI-generated review output. Treat it as untrusted analysis and verify before acting.

Test coverage looks good. No gaps identified.

[github-actions]

🤖 AI Agent: docs-sync-checker — Docs Sync

AI-generated review output. Treat it as untrusted analysis and verify before acting.

Docs Sync

• examples/demos/README.md -- section updated with instructions for running demos against an open-source model. Ensure this aligns with the latest changes in the CI workflow.
• No CHANGELOG entry for the addition of the Demos CI workflow, which is a behavioral change.

[github-actions]

🤖 AI Agent: security-scanner — View details

AI-generated review output. Treat it as untrusted analysis and verify before acting.

No security issues found.

[imran-siddique]

Gating, pinning, and permissions are right, and paths-filter keeps this from running on every PR. Cache the Ollama binary and the pulled model keyed on OLLAMA_VERSION plus model to cut the per-run ~2GB download and network flakiness, and confirm the demo asserts on governance decisions rather than raw model output so a nondeterministic response cannot flake the gate.

[prayagupa]

@imran-siddique thank you for review. I intentionally did not to assert on demo code, but wanted to make sure they are functional. I have separate PR for end-to-end tests against local Open weight model: https://github.com/microsoft/agent-governance-toolkit/pull/3345/changes
It also addresses your point that the model should be cached. Take a look and let me know.