feat(server): intent input channel — StartSession.input seeds decision journal

testing/projections/src/test/kotlin/DecisionJournalProjectorTest.kt

@@ -1,3 +1,4 @@
+import com.correx.core.events.events.InitialIntentEvent
 import com.correx.core.events.events.SteeringNoteAddedEvent
 import com.correx.core.events.events.TransitionExecutedEvent
 import com.correx.core.events.types.SessionId
@@ -35,6 +36,17 @@ class DecisionJournalProjectorTest {
         assertEquals(DecisionKind.TRANSITION, s.records[1].kind)
     }
 
+    @Test
+    fun `initial intent becomes a journal record`() {
+        val s = projector.apply(
+            projector.initial(),
+            stored(payload = InitialIntentEvent(SessionId("x"), "add auth layer"), sequence = 1L),
+        )
+        assertEquals(1, s.records.size)
+        assertEquals(DecisionKind.INTENT, s.records[0].kind)
+        assertEquals("Goal: add auth layer", s.records[0].summary)
+    }
+
     @Test
     fun `unrelated events are ignored`() {
         val s0 = projector.initial()