feat: add config-change-investigation-demo (#24)

feat: add rule-evaluation-and-dedup-demo (#22)

add ai-assisted detection demo and portfolio docs (#18)

Includes the rebased headless plotting backend fix needed for CI after updating onto main.

Merge pull request #15 from stacknil/codex/issue-10-summary-artifact

[codex] add machine-readable run summaries

reduce noisy repeated alerts with cooldown (#9)