frontend: polish app launch and release experience

neode-ui/src/utils/introSplash.ts

@@ -0,0 +1,17 @@
+export interface IntroSplashDecisionInput {
+  seenIntro: boolean
+  routePath: string
+  fromBoot: boolean
+  devMode?: string
+  onboardingComplete: boolean | null
+}
+
+export function shouldShowIntroSplash(input: IntroSplashDecisionInput): boolean {
+  if (input.seenIntro) return false
+  if (input.onboardingComplete === true) return false
+
+  const isDirectRoute = input.routePath !== '/'
+  if (input.fromBoot) return true
+  if (input.devMode === 'boot') return false
+  return !isDirectRoute
+}