diff --git a/core/events/src/main/kotlin/com/correx/core/events/events/SessionEvents.kt b/core/events/src/main/kotlin/com/correx/core/events/events/SessionEvents.kt
index ebcd6ab2..da552b48 100644
--- a/core/events/src/main/kotlin/com/correx/core/events/events/SessionEvents.kt
+++ b/core/events/src/main/kotlin/com/correx/core/events/events/SessionEvents.kt
@@ -27,3 +27,13 @@ data class OperatorProfileBoundEvent(
     val preferredModels: List<String>,
     val conventions: List<String>,
 ) : EventPayload
+
+@Serializable
+@SerialName("ProjectProfileBound")
+data class ProjectProfileBoundEvent(
+    val sessionId: SessionId,
+    val workspaceRoot: String,
+    val about: String,
+    val conventions: List<String>,
+    val commands: Map<String, String>,
+) : EventPayload
diff --git a/core/events/src/main/kotlin/com/correx/core/events/serialization/Serialization.kt b/core/events/src/main/kotlin/com/correx/core/events/serialization/Serialization.kt
index 3c136fde..19e85800 100644
--- a/core/events/src/main/kotlin/com/correx/core/events/serialization/Serialization.kt
+++ b/core/events/src/main/kotlin/com/correx/core/events/serialization/Serialization.kt
@@ -12,6 +12,7 @@ import com.correx.core.events.events.ChatSessionStartedEvent
 import com.correx.core.events.events.ChatTurnEvent
 import com.correx.core.events.events.RouterNarrationEvent
 import com.correx.core.events.events.OperatorProfileBoundEvent
+import com.correx.core.events.events.ProjectProfileBoundEvent
 import com.correx.core.events.events.SessionWorkspaceBoundEvent
 import com.correx.core.events.events.ContextTruncatedEvent
 import com.correx.core.events.events.EventPayload
@@ -100,6 +101,7 @@ val eventModule = SerializersModule {
         subclass(RouterNarrationEvent::class)
         subclass(SessionWorkspaceBoundEvent::class)
         subclass(OperatorProfileBoundEvent::class)
+        subclass(ProjectProfileBoundEvent::class)
         subclass(L3MemoryRetrievedEvent::class)
         subclass(ContextTruncatedEvent::class)
         subclass(ExecutionPlanLockedEvent::class)
diff --git a/core/events/src/test/kotlin/com/correx/core/events/serialization/ProjectProfileBoundEventSerializationTest.kt b/core/events/src/test/kotlin/com/correx/core/events/serialization/ProjectProfileBoundEventSerializationTest.kt
new file mode 100644
index 00000000..58627b9a
--- /dev/null
+++ b/core/events/src/test/kotlin/com/correx/core/events/serialization/ProjectProfileBoundEventSerializationTest.kt
@@ -0,0 +1,40 @@
+package com.correx.core.events.serialization
+
+import com.correx.core.events.events.EventPayload
+import com.correx.core.events.events.ProjectProfileBoundEvent
+import com.correx.core.events.types.SessionId
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertTrue
+
+class ProjectProfileBoundEventSerializationTest {
+
+    @Test
+    fun `ProjectProfileBoundEvent round-trips as polymorphic EventPayload`() {
+        val sample: EventPayload = ProjectProfileBoundEvent(
+            sessionId = SessionId("s1"),
+            workspaceRoot = "/repo",
+            about = "Event-sourced orchestration kernel",
+            conventions = listOf("no bare try-catch", "events are the only source of truth"),
+            commands = mapOf("build" to "./gradlew build", "test" to "./gradlew check"),
+        )
+        val encoded = eventJson.encodeToString(EventPayload.serializer(), sample)
+        assertTrue(encoded.contains("\"type\":\"ProjectProfileBound\""), "SerialName must be present: $encoded")
+        val decoded = eventJson.decodeFromString(EventPayload.serializer(), encoded)
+        assertEquals(sample, decoded)
+    }
+
+    @Test
+    fun `round-trips with empty fields`() {
+        val sample: EventPayload = ProjectProfileBoundEvent(
+            sessionId = SessionId("s0"),
+            workspaceRoot = "/empty",
+            about = "",
+            conventions = emptyList(),
+            commands = emptyMap(),
+        )
+        val encoded = eventJson.encodeToString(EventPayload.serializer(), sample)
+        val decoded = eventJson.decodeFromString(EventPayload.serializer(), encoded)
+        assertEquals(sample, decoded)
+    }
+}
diff --git a/core/sessions/src/main/kotlin/com/correx/core/sessions/BoundProjectProfile.kt b/core/sessions/src/main/kotlin/com/correx/core/sessions/BoundProjectProfile.kt
new file mode 100644
index 00000000..907f0f58
--- /dev/null
+++ b/core/sessions/src/main/kotlin/com/correx/core/sessions/BoundProjectProfile.kt
@@ -0,0 +1,7 @@
+package com.correx.core.sessions
+
+data class BoundProjectProfile(
+    val about: String,
+    val conventions: List<String>,
+    val commands: Map<String, String>,
+)
diff --git a/core/sessions/src/main/kotlin/com/correx/core/sessions/DefaultSessionReducer.kt b/core/sessions/src/main/kotlin/com/correx/core/sessions/DefaultSessionReducer.kt
index 238de513..d6622dbd 100644
--- a/core/sessions/src/main/kotlin/com/correx/core/sessions/DefaultSessionReducer.kt
+++ b/core/sessions/src/main/kotlin/com/correx/core/sessions/DefaultSessionReducer.kt
@@ -1,6 +1,7 @@
 package com.correx.core.sessions
 
 import com.correx.core.events.events.OperatorProfileBoundEvent
+import com.correx.core.events.events.ProjectProfileBoundEvent
 import com.correx.core.events.events.SessionWorkspaceBoundEvent
 import com.correx.core.events.events.StageCompletedEvent
 import com.correx.core.events.events.StageFailedEvent
@@ -51,12 +52,22 @@ class DefaultSessionReducer : SessionReducer {
             else -> state.boundProfile
         }
 
+        val boundProjectProfile = when (payload) {
+            is ProjectProfileBoundEvent -> BoundProjectProfile(
+                about = payload.about,
+                conventions = payload.conventions,
+                commands = payload.commands,
+            )
+            else -> state.boundProjectProfile
+        }
+
         return state.copy(
             status = newStatus,
             createdAt = createdAt,
             updatedAt = event.metadata.timestamp,
             boundWorkspace = boundWorkspace,
             boundProfile = boundProfile,
+            boundProjectProfile = boundProjectProfile,
         )
     }
 }
diff --git a/core/sessions/src/main/kotlin/com/correx/core/sessions/SessionState.kt b/core/sessions/src/main/kotlin/com/correx/core/sessions/SessionState.kt
index 7d74e242..d2d21f48 100644
--- a/core/sessions/src/main/kotlin/com/correx/core/sessions/SessionState.kt
+++ b/core/sessions/src/main/kotlin/com/correx/core/sessions/SessionState.kt
@@ -9,4 +9,5 @@ data class SessionState(
     val invalidTransitions: Int = 0,
     val boundWorkspace: BoundWorkspace? = null,
     val boundProfile: BoundProfile? = null,
+    val boundProjectProfile: BoundProjectProfile? = null,
 )
diff --git a/testing/projections/src/test/kotlin/DefaultSessionReducerTest.kt b/testing/projections/src/test/kotlin/DefaultSessionReducerTest.kt
index 1746440f..878d367c 100644
--- a/testing/projections/src/test/kotlin/DefaultSessionReducerTest.kt
+++ b/testing/projections/src/test/kotlin/DefaultSessionReducerTest.kt
@@ -10,6 +10,8 @@ import com.correx.core.events.events.WorkflowStartedEvent
 import com.correx.core.events.types.SessionId
 import com.correx.core.events.types.StageId
 import com.correx.core.events.types.TransitionId
+import com.correx.core.events.events.ProjectProfileBoundEvent
+import com.correx.core.sessions.BoundProjectProfile
 import com.correx.core.sessions.BoundWorkspace
 import com.correx.core.sessions.DefaultSessionReducer
 import com.correx.core.sessions.SessionState
@@ -278,6 +280,53 @@ class DefaultSessionReducerTest {
         )
     }
 
+    @Test
+    fun `ProjectProfileBoundEvent reduces into boundProjectProfile`() {
+        val result = reducer.reduce(
+            state = initialState(),
+            event = stored(
+                sessionId = sessionId,
+                payload = ProjectProfileBoundEvent(
+                    sessionId = sessionId,
+                    workspaceRoot = "/repo",
+                    about = "kernel project",
+                    conventions = listOf("no bare try-catch"),
+                    commands = mapOf("test" to "./gradlew check"),
+                ),
+            ),
+        )
+
+        assertEquals(
+            BoundProjectProfile(
+                about = "kernel project",
+                conventions = listOf("no bare try-catch"),
+                commands = mapOf("test" to "./gradlew check"),
+            ),
+            result.boundProjectProfile,
+        )
+    }
+
+    @Test
+    fun `boundProjectProfile is preserved by subsequent unrelated events`() {
+        val withProfile = initialState().copy(
+            boundProjectProfile = BoundProjectProfile(
+                about = "kernel project",
+                conventions = listOf("no bare try-catch"),
+                commands = emptyMap(),
+            ),
+        )
+
+        val result = reducer.reduce(
+            state = withProfile,
+            event = stored(
+                sessionId = sessionId,
+                payload = WorkflowStartedEvent(sessionId, workflowId = "wf", startStageId = StageId("s1")),
+            ),
+        )
+
+        assertEquals("kernel project", result.boundProjectProfile?.about)
+    }
+
     private fun initialState() =
         SessionState(
             status = SessionStatus.CREATED