diff --git a/Setup.md b/Setup.md
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+# Setup
+
+## Proven Setup Signals
+
+| Signal | Detail |
+|---|---|
+| package.json | name=ourtime; scripts=dev, build, preview; deps=uuid, react, framer-motion, lucide-react, react-dom, @google/genai, date-fns, @types/node, @vitejs/plugin-react, typescript |
+| README files | README.md |
+
+## Setup Path
+
+- Install Node dependencies with the package manager used by the repo, then run the relevant script from package.json.
+
+## Environment Rules
+
+- Keep local secrets out of Git.
+- Put generated build output outside source control.
+- Prefer a clean checkout when validating setup instructions.
+- Record the exact command that works in the readiness issue before closing it.
+
+## Current Gaps
+
+- No setup gaps were inferred from inspected evidence.