feat(server): real GET /sessions via SessionSummaryProjector

apps/server/src/main/kotlin/com/correx/apps/server/ServerModule.kt

@@ -23,6 +23,8 @@ import com.correx.core.kernel.orchestration.OrchestrationConfig
 import com.correx.core.kernel.orchestration.OrchestrationRepository
 import com.correx.core.router.RouterFacade
 import com.correx.core.sessions.DefaultSessionRepository
+import com.correx.core.sessions.SessionSummary
+import com.correx.core.sessions.SessionSummaryProjector
 import com.correx.core.tools.registry.ToolRegistry
 import com.correx.core.events.orchestration.OrchestrationStatus
 import kotlinx.datetime.Clock
@@ -224,6 +226,13 @@ class ServerModule(
         }
     }
 
+    private val sessionSummaryProjector = SessionSummaryProjector()
+
+    fun listSessionSummaries(): List<SessionSummary> =
+        eventStore.allSessionIds().map { sessionId ->
+            sessionSummaryProjector.project(sessionId, eventStore.readFrom(sessionId, fromSequence = 0L))
+        }
+
     private fun preRegisterPendingApprovals() {
         val projector = ApprovalProjector(DefaultApprovalReducer())
         eventStore.allSessionIds().forEach { sessionId ->

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

@@ -21,7 +21,15 @@ import java.util.*
 data class StartSessionRequest(val workflowId: String, val config: SessionConfigDto? = null)
 
 @Serializable
-data class SessionSummaryResponse(val sessionId: String, val status: String)
+data class SessionSummaryResponse(
+    val sessionId: String,
+    val status: String,
+    val intent: String? = null,
+    val workflowId: String? = null,
+    val stageCount: Int = 0,
+    val createdAt: String? = null,
+    val lastActivityAt: String? = null,
+)
 
 @Serializable
 data class SessionStateResponse(val sessionId: String, val status: String, val createdAt: String?)
@@ -37,7 +45,20 @@ private val log = LoggerFactory.getLogger("com.correx.apps.server.routes.Session
 fun Route.sessionRoutes(module: ServerModule) {
     val streamHandler = SessionStreamHandler(module)
     route("/sessions") {
-        get { call.respond(emptyList<SessionSummaryResponse>()) }
+        get {
+            val summaries = module.listSessionSummaries().map { s ->
+                SessionSummaryResponse(
+                    sessionId = s.sessionId.value,
+                    status = s.status,
+                    intent = s.intent,
+                    workflowId = s.workflowId,
+                    stageCount = s.stageCount,
+                    createdAt = s.createdAt?.toString(),
+                    lastActivityAt = s.lastActivityAt?.toString(),
+                )
+            }
+            call.respond(summaries)
+        }
         startSessionRoute(module)
         route("/{id}") {
             getSessionRoute(module)