The body is lean and free of basic-concept padding, but the time-sensitive version number "Navigation Compose 2.8.0+" sits outside an old-patterns/deprecated section, which the guideline says should penalize conciseness.

Guidance names concrete APIs (`.toRoute<T>()`, `@Serializable`, `navigation` extension functions) but the body contains no inline executable code; the runnable examples live only in the referenced file.

This is a simple, single-purpose skill under 50 lines with no destructive or batch operations, and its sections are clearly organized, so the simple-skills allowance applies.

The body is a concise overview with a single, clearly signaled one-level-deep reference to references/implementation.md, which exists as a real bundle file.

It names the domain and a concrete action ("Implement type-safe Jetpack Navigation Compose routes using Kotlin serialization") but lists only a single action rather than the multiple concrete actions of the anchor-3 example.

It explicitly states what it does ("Implement type-safe ... routes using Kotlin serialization") and when to use it ("Use when defining navigation graphs with type-safe destinations in Jetpack Compose"), satisfying both halves.

It includes relevant natural terms ("navigation graphs", "type-safe destinations", "Jetpack Compose") but misses common variations a user might say, such as NavHost or navController, which only appear in metadata.

The niche is narrow and specific (type-safe Jetpack Navigation Compose with Kotlin serialization), with triggers unlikely to overlap with unrelated skills.