CodeDelta — demo code

Sample projects used to demonstrate CodeDelta. They are fetched on demand by the tool's Download demo code option, and can also be read here on GitHub. Three demos:

• churn-demo/ — an old/ and new/ version of the same small project in seven languages, to show CodeDelta's churn metrics (CHG / DEL / ADD / CRN / REP_CHURN). Also carries the canonical TRUE_CHURN demonstration a one-line package.json dependency bump alongside the package-lock.json the tooling regenerated from it — the lockfile churn is classified as generated ("npm lockfile") and subtotalled, so the report's TRUE_CHURN row/tile shows the churn the developers actually authored. The ledger.* pairs show moved code: a 20-statement block moved to the far end of the file, and one line holding four statements moved with it — git counts ~25 lines deleted and ~25 added, CodeDelta counts them as MOV and reports the single real edit as CHG 1. Expected figures and the fixture rules are in churn-demo/README.md.
• agent-scan-demo/ — Meridian Helpdesk, a fictional support product in twenty-six languages and file types whose release added AI features in the exact shapes of the 2025 incidents (a supply-chain post-install launching agents with their checks off, an encoded prompt sent to a hosted model, a local model with no address in the file, an executing notebook, a CI recipe launching an agent, browser and mobile clients that run what a model returns). Thirty-one CRITICAL cards across twenty-six languages and file types; the README is a guided tour.
• safety-demo/ — the same product as an old/ and new/ pair: the release that added the AI features, with the build machinery changing underneath it (two install hooks, four build files that fetch remote content, deleted and added CI files, Autoconf, Debian packaging — twenty build files in one diff). The Churn + Agent Scan demo: every churn tile lit — moves, in-place edits, comment churn, a rewrite, generated churn, data tables — beside the agent findings and the Build & Deployment Surface.