Function

isKnownRoutePath

isKnownRoutePath(path: string): boolean
Whether the router has a route for this path, judged by its first segment.
Parameters
- path: string
  The path after the locale segment, leading slash included
Returns boolean
true when a route exists for it
Remarks
Only the first segment is examined, and deliberately. What follows is data, not routing: an unknown course slug or lesson id is the application's business, and it answers with an inline recovery state rather than a missing page. Pre-empting that here would replace a helpful screen with a bare 404.

The home — an empty path — is always known.
Example
```
isKnownRoutePath("/privacy");        // true
isKnownRoutePath("/courses/typo");   // true — the page explains it
isKnownRoutePath("/error");          // false
```
- Defined in lib/known-route-segments/known-route-segments.ts:57