Release Helper Tools 0.1.0

public/CONTRIBUTING.md

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+# Contributing
+
+Use Node.js 22 and npm 11, install with `npm ci`, and run `npm run check` before
+submitting a change. New helpers must be framework-free, deterministic unless
+their name explicitly promises secure randomness, and bounded before allocating
+from untrusted input. Add known vectors and malicious/boundary tests alongside
+each implementation.
+
+Do not add runtime network calls, telemetry, persistence, implicit evaluation,
+or a second UI-only implementation of library logic. Preserve the stable root
+exports or document a deliberate breaking change.