debt(pre-router): resolved most of the technical debt that was noted while finishing epic-12 and epic-13.

apps/server/src/main/kotlin/com/correx/apps/server/approval/ApprovalCoordinator.kt

@@ -16,7 +16,7 @@ import com.correx.core.events.events.ApprovalRequestedEvent
 import com.correx.core.events.types.ApprovalRequestId
 import com.correx.core.events.types.SessionId
 import com.correx.core.events.types.StageId
-import com.correx.core.kernel.orchestration.DefaultSessionOrchestrator
+import com.correx.core.kernel.orchestration.ApprovalGateway
 import com.correx.core.sessions.ApprovalMode
 import io.ktor.server.websocket.DefaultWebSocketServerSession
 import io.ktor.websocket.Frame
@@ -28,7 +28,7 @@ import kotlinx.datetime.Clock
 import java.util.concurrent.ConcurrentHashMap
 
 class ApprovalCoordinator(
-    private val orchestrator: DefaultSessionOrchestrator,
+    private val orchestrator: ApprovalGateway,
     private val config: ApprovalConfig,
     private val scope: CoroutineScope,
 ) {

apps/server/src/main/kotlin/com/correx/apps/server/routes/ApprovalRoutes.kt

@@ -1,8 +1,11 @@
+@file:Suppress("MatchingDeclarationName")
+
 package com.correx.apps.server.routes
 
 import com.correx.apps.server.approval.ApprovalCoordinator
 import com.correx.apps.server.protocol.ApprovalDecision
 import com.correx.apps.server.protocol.ClientMessage
+import com.correx.apps.server.protocol.ServerMessage
 import com.correx.core.events.types.ApprovalRequestId
 import com.correx.core.events.types.SessionId
 import com.correx.core.utils.TypeId
@@ -43,7 +46,8 @@ fun Route.approvalRoutes(coordinator: ApprovalCoordinator) {
             )
             val error = coordinator.handleResponse(msg, sessionId)
             if (error != null) {
-                call.respond(HttpStatusCode.Conflict, mapOf("error" to (error as? com.correx.apps.server.protocol.ServerMessage.ProtocolError)?.message))
+                val msg = (error as? ServerMessage.ProtocolError)?.message
+                call.respond(HttpStatusCode.Conflict, mapOf("error" to msg))
             } else {
                 call.respond(HttpStatusCode.OK)
             }