fix: Correct dependency syntax for version catalog

Fix NullPointerException by separating modImplementation and include
calls instead of using !!.let pattern. Version catalog references
don't work with the !! operator in Gradle.

Changed from:
  modImplementation(libs.foo)!!.let { include(it) }

To:
  modImplementation(libs.foo)
  include(libs.foo)

This matches the pattern used in meteor-rejects-v2 reference implementation.

Author: claude

build.gradle.kts

@@ -31,11 +31,14 @@ dependencies {
     compileOnly(libs.orbit)
 
     // NanoHTTPD for HTTP server and WebSocket support
-    modImplementation(libs.nanohttpd.core)!!.let { include(it) }
-    modImplementation(libs.nanohttpd.websocket)!!.let { include(it) }
+    modImplementation(libs.nanohttpd.core)
+    include(libs.nanohttpd.core)
+    modImplementation(libs.nanohttpd.websocket)
+    include(libs.nanohttpd.websocket)
 
     // JSON serialization for WebSocket messages
-    modImplementation(libs.gson)!!.let { include(it) }
+    modImplementation(libs.gson)
+    include(libs.gson)
 
     // Testing
     testImplementation(libs.junit.api)