refactor(protocol): add toolName to ToolResult, remove proto typealiases, rename id→toolCallId, drop Conversation.events()

Three protocol-level changes from Android-client review (items 1-3, 5-6):

1) toolName denormalization in ToolResult (3 layers):
   - :outbox-api/Event.ToolResult: +toolName: String? = null
   - :journal-api/MessageRecord.ToolResult: +toolName: String? = null
   - :proto/Message.ToolResult: +toolName: String? = null
   - :storage-ksqlite, :journal-ksqlite ResultPayload codec: +toolName
   - :standalone/ToolDispatcher, ConversationLoop: thread toolName = call.name
   Nullable + default = backward-compat for already-persisted histories
   and existing clients.

2) Drop proto/Event.kt, AgentEvent.kt, CommonEvent.kt typealiases.
   is proto.Event.End failed with 'Unresolved reference End' (alias
   loses nested-class access). Use pw.binom.agentik.outbox.{Event,
   AgentEvent, CommonEvent} directly everywhere — :proto already has
   api(:outbox-api), the package is visible to consumers, no shim
   needed. 21 files rewired, 3 files deleted.

3) Rename Event.ToolResult.id → toolCallId (option B per user).
   In :outbox-api Event.ToolResult.id == Event.ToolCall.id (one value,
   one name); the persistent journal keeps MessageRecord.ToolResult.id
   as its own PK + toolCallId as FK to the call — different semantics,
   left untouched. Fixed ToolDispatcher bug: emitted id = resultId
   while KDoc claimed id == ToolCall.id; now emits toolCallId = callId.

4) Remove Conversation.events() from :proto; OutboxStore is sole event source.
   Conversation is a pure per-conversation abstraction (send/getMessages/
   rename/close). Live events only via agent.outbox.conversationEvents/
   agentEvents/events. HTTP route /conversations/{id}/events stays for
   wire-compat but routes through outbox internally (map { it.event }).

jvmTest green (95 tasks).

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

@@ -7,7 +7,7 @@ import kotlinx.coroutines.launch
 import pw.binom.agentik.proto.Agent
 import pw.binom.agentik.proto.Content
 import pw.binom.agentik.proto.Conversation
-import pw.binom.agentik.proto.Event
+import pw.binom.agentik.outbox.Event
 import kotlin.coroutines.CoroutineContext
 import kotlin.time.Instant
 
@@ -92,12 +92,12 @@ internal class TuiBackend(
     }
 
     /**
-     * Подписывается на [Conversation.events] и перенаправляет их в [state].
+     * Подписывается на `outbox.conversationEvents(after, conv.id)` и перенаправляет их в [state].
      */
     private fun subscribeEvents(conv: Conversation, from: Instant) {
         eventsJob?.cancel()
         eventsJob = scope.launch {
-            conv.events(from).collect { ev -> dispatch(ev) }
+            agent.outbox.conversationEvents(from, conv.id).collect { ce -> dispatch(ce.event) }
         }
     }
 

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

@@ -8,7 +8,7 @@ import pw.binom.agentik.outbox.OutboxStore
 import pw.binom.agentik.proto.Agent
 import pw.binom.agentik.proto.Content
 import pw.binom.agentik.proto.Conversation
-import pw.binom.agentik.proto.Event
+import pw.binom.agentik.outbox.Event
 import pw.binom.agentik.proto.Message
 import pw.binom.agentik.proto.MessageContext
 import kotlin.time.Instant
@@ -31,7 +31,7 @@ internal class FakeAgent(
     // 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 fun events(after: Instant?) = emptyFlow<pw.binom.agentik.outbox.CommonEvent>()
         override suspend fun earliestEventDate(): Instant = Instant.DISTANT_PAST
         override fun close() {}
     }

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

@@ -4,7 +4,7 @@ import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.test.runCurrent
 import kotlinx.coroutines.test.runTest
 import pw.binom.agentik.proto.Content
-import pw.binom.agentik.proto.Event
+import pw.binom.agentik.outbox.Event
 import kotlin.test.Test
 import kotlin.test.assertEquals
 import kotlin.test.assertFalse
@@ -170,7 +170,7 @@ class TuiBackendTest {
         runCurrent()
         val now = kotlin.time.Clock.System.now()
         conv.emit(Event.ToolCall(date = now, id = "1", title = null, toolName = "echo", toolArgs = """{"x":1}"""))
-        conv.emit(Event.ToolResult(date = now, id = "1", result = "ok"))
+        conv.emit(Event.ToolResult(date = now, toolCallId = "1", result = "ok"))
         runCurrent()
 
         val toolMsgs = state.messages.value.filterIsInstance<TuiMessage.ToolCall>()