refactor: migrate EventStore and MessageStore to :outbox-api and :journal-api

- Replaced usages of `:message-store-api` and `:working-memory-api` with `:journal-api`, `:outbox-api`, and `:context-api`.
- Deprecated legacy `EventStore` and `MessageStore` interfaces, added `typealias` for backward compatibility.
- Updated imports across all modules with references to `:journal-api` and `:outbox-api`.
- Introduced `journalRoutes` and `outboxRoutes` in `:server` for audit log and live event stream endpoints.
- Adjusted `Agent` to expose read-only `journal` and `outbox` stores for improved modularity and clarity.
- Removed legacy Event and AgentEvent definitions from `:proto`, migrated to `:outbox-api`.
- Storage-related modules have been updated to support the new APIs consistently.

agentik-tui/src/commonMain/kotlin/pw/binom/agentik/tui/TuiBackend.kt

@@ -46,7 +46,11 @@ internal class TuiBackend(
         state.postSystem("подключено к ${state.config.server}")
         scope.launch {
             try {
-                agent.events(Instant.DISTANT_PAST).collect { /* sidebar refresh */ }
+                // agent.outbox.agentEvents(after) возвращает Flow<CommonEvent.Agent>;
+                // распаковываем .event для получения AgentEvent (раньше был
+                // отдельный метод agent.events(), теперь упразднён — события
+                // живут в outbox-сущности).
+                agent.outbox.agentEvents(Instant.DISTANT_PAST).collect { /* sidebar refresh */ }
             } catch (_: kotlinx.coroutines.CancellationException) {
                 // штатная отмена при закрытии UI
             } catch (e: Exception) {

agentik-tui/src/commonTest/kotlin/pw/binom/agentik/tui/FakeAgent.kt

@@ -3,8 +3,9 @@ package pw.binom.agentik.tui
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.flow.emptyFlow
+import pw.binom.agentik.journal.JournalStore
+import pw.binom.agentik.outbox.OutboxStore
 import pw.binom.agentik.proto.Agent
-import pw.binom.agentik.proto.AgentEvent
 import pw.binom.agentik.proto.Content
 import pw.binom.agentik.proto.Conversation
 import pw.binom.agentik.proto.Event
@@ -25,6 +26,16 @@ internal class FakeAgent(
         private set
     val conversations = mutableListOf<FakeConversation>()
 
+    // Storage handles не используются тестами TuiBackend — тесты проверяют
+    // маршрутизацию Conversation.events в UI state. Outbox stub-ы возвращают
+    // emptyFlow, journal — error-on-access (никто не должен его трогать).
+    override val journal: JournalStore = error("journal not used in TuiBackend tests")
+    override val outbox: OutboxStore = object : OutboxStore {
+        override fun events(after: Instant?) = emptyFlow<pw.binom.agentik.proto.CommonEvent>()
+        override suspend fun earliestEventDate(): Instant = Instant.DISTANT_PAST
+        override fun close() {}
+    }
+
     override fun createConversation(temp: Boolean): Conversation {
         createCount++
         val c = conversationFactory()
@@ -40,8 +51,6 @@ internal class FakeAgent(
 
     override suspend fun getConversations(offset: Int, limit: Int): List<Conversation> =
         conversations.toList()
-
-    override fun events(after: Instant): Flow<AgentEvent> = emptyFlow()
 }
 
 /**