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

core/events/build.gradle

@@ -6,4 +6,5 @@ plugins {
 
 dependencies {
     implementation "org.jetbrains.kotlinx:kotlinx-datetime"
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:$kotlinx_coroutines_version"
 }

core/events/src/main/kotlin/com/correx/core/events/stores/EventStore.kt

@@ -3,6 +3,7 @@ package com.correx.core.events.stores
 import com.correx.core.events.events.NewEvent
 import com.correx.core.events.events.StoredEvent
 import com.correx.core.events.types.SessionId
+import kotlinx.coroutines.flow.Flow
 
 
 interface EventStore {
@@ -34,4 +35,10 @@ interface EventStore {
      * Get last sequence number for session.
      */
     fun lastSequence(sessionId: SessionId): Long?
+
+    /**
+     * Subscribe to live events for a session. Emits each event as it is appended.
+     * Does not replay historical events — use [readFrom] for catch-up before subscribing.
+     */
+    fun subscribe(sessionId: SessionId): Flow<StoredEvent>
 }

core/kernel/src/main/kotlin/com/correx/core/kernel/orchestration/ApprovalGateway.kt

@@ -0,0 +1,8 @@
+package com.correx.core.kernel.orchestration
+
+import com.correx.core.approvals.model.ApprovalDecision
+import com.correx.core.events.types.ApprovalRequestId
+
+interface ApprovalGateway {
+    fun submitApprovalDecision(requestId: ApprovalRequestId, decision: ApprovalDecision)
+}

core/kernel/src/main/kotlin/com/correx/core/kernel/orchestration/DefaultSessionOrchestrator.kt

@@ -22,7 +22,7 @@ class DefaultSessionOrchestrator(
     private val repositories: OrchestratorRepositories,
     engines: OrchestratorEngines,
     private val retryCoordinator: RetryCoordinator,
-) : SessionOrchestrator(repositories, engines) {
+) : SessionOrchestrator(repositories, engines), ApprovalGateway {
     override val cancellations: ConcurrentHashMap<SessionId, AtomicBoolean> =
         ConcurrentHashMap<SessionId, AtomicBoolean>()
 
@@ -82,7 +82,7 @@ class DefaultSessionOrchestrator(
         cancellations.getOrPut(sessionId) { AtomicBoolean(false) }.set(true)
     }
 
-    fun submitApprovalDecision(requestId: ApprovalRequestId, decision: ApprovalDecision) {
+    override fun submitApprovalDecision(requestId: ApprovalRequestId, decision: ApprovalDecision) {
         val deferred = pendingApprovals[requestId]
             ?: error("No pending approval for requestId ${requestId.value}")
         deferred.complete(decision)