v4.6.0

Minor Changes

• 5e8bcf3: Throw a clear error when secretConfig.get() / publicConfig.get() /
  featureFlag.get() (or their getSync siblings) receive undefined /
  null / non-string keys, instead of cascading into envVarNameFor's
  undefined.replace(...) and surfacing as the cryptic
  Cannot read properties of undefined (reading 'replace').

  Most common cause: reading SecretConfigKeys.<X> (or
  PublicConfigKeys.<X> / FeatureFlagKeys.<X>) for a key that wasn't
  declared in the consumer's schema. The new error spells that out and
  points at smooai-config push. Cost real prod debug time on
  SMOODEV-841 — the route handler crashed deep inside @smooai/config's
  internals while the actual fix was one declaration in
  .smooai-config/config.ts.

• 48aeee6: withSmooConfig: also wire __SMOO_CLIENT_ENV__ through nextConfig.compiler.define

  compiler.define is Next.js 16's native compile-time replacement — it works for
  both webpack and turbopack out of the box with the same code-fragment semantics
  as webpack's DefinePlugin. Adding it alongside the existing DefinePlugin call
  means consumers no longer need next dev --webpack (or next build --webpack)
  to make getClientPublicConfig(...) / getClientFeatureFlag(...) resolve.

  Webpack DefinePlugin path is preserved as defense-in-depth so older Next.js
  versions and webpack-only pipelines keep working.