diff --git a/apps/server/src/orchestration/Layers/ProviderRuntimeIngestion.test.ts b/apps/server/src/orchestration/Layers/ProviderRuntimeIngestion.test.ts
index c1ba48108f..e9f231464e 100644
--- a/apps/server/src/orchestration/Layers/ProviderRuntimeIngestion.test.ts
+++ b/apps/server/src/orchestration/Layers/ProviderRuntimeIngestion.test.ts
@@ -502,6 +502,9 @@ describe("ProviderRuntimeIngestion", () => {
         thread.session?.status === "running" && thread.session?.activeTurnId === "turn-primary",
     );
 
+    // A turn.completed from a different turn still transitions the session to
+    // "ready" — preventing the session from getting permanently stuck at
+    // "running" when turnIds mismatch (the runtime is done regardless).
     harness.emit({
       type: "turn.completed",
       eventId: asEventId("evt-turn-completed-aux"),
@@ -512,24 +515,6 @@ describe("ProviderRuntimeIngestion", () => {
       status: "completed",
     });
 
-    await harness.drain();
-    const midReadModel = await Effect.runPromise(harness.engine.getReadModel());
-    const midThread = midReadModel.threads.find(
-      (entry) => entry.id === ThreadId.makeUnsafe("thread-1"),
-    );
-    expect(midThread?.session?.status).toBe("running");
-    expect(midThread?.session?.activeTurnId).toBe("turn-primary");
-
-    harness.emit({
-      type: "turn.completed",
-      eventId: asEventId("evt-turn-completed-primary"),
-      provider: "codex",
-      createdAt: new Date().toISOString(),
-      threadId: asThreadId("thread-1"),
-      turnId: asTurnId("turn-primary"),
-      status: "completed",
-    });
-
     await waitForThread(
       harness.engine,
       (thread) => thread.session?.status === "ready" && thread.session?.activeTurnId === null,
@@ -556,6 +541,8 @@ describe("ProviderRuntimeIngestion", () => {
         thread.session?.activeTurnId === "turn-guarded-main",
     );
 
+    // A turn.completed with a mismatched turnId still transitions the session
+    // to "ready" — preventing stuck sessions when turnIds don't align.
     harness.emit({
       type: "turn.completed",
       eventId: asEventId("evt-turn-completed-guarded-other"),
@@ -566,24 +553,6 @@ describe("ProviderRuntimeIngestion", () => {
       status: "completed",
     });
 
-    await harness.drain();
-    const midReadModel = await Effect.runPromise(harness.engine.getReadModel());
-    const midThread = midReadModel.threads.find(
-      (entry) => entry.id === ThreadId.makeUnsafe("thread-1"),
-    );
-    expect(midThread?.session?.status).toBe("running");
-    expect(midThread?.session?.activeTurnId).toBe("turn-guarded-main");
-
-    harness.emit({
-      type: "turn.completed",
-      eventId: asEventId("evt-turn-completed-guarded-main"),
-      provider: "codex",
-      createdAt: new Date().toISOString(),
-      threadId: asThreadId("thread-1"),
-      turnId: asTurnId("turn-guarded-main"),
-      status: "completed",
-    });
-
     await waitForThread(
       harness.engine,
       (thread) => thread.session?.status === "ready" && thread.session?.activeTurnId === null,
diff --git a/apps/server/src/orchestration/Layers/ProviderRuntimeIngestion.ts b/apps/server/src/orchestration/Layers/ProviderRuntimeIngestion.ts
index 3df47941af..ccb41fd330 100644
--- a/apps/server/src/orchestration/Layers/ProviderRuntimeIngestion.ts
+++ b/apps/server/src/orchestration/Layers/ProviderRuntimeIngestion.ts
@@ -883,19 +883,32 @@ const make = Effect.gen(function* () {
           case "turn.started":
             return !conflictsWithActiveTurn;
           case "turn.completed":
-            if (conflictsWithActiveTurn || missingTurnForActiveTurn) {
-              return false;
-            }
-            // Only the active turn may close the lifecycle state.
-            if (activeTurnId !== null && eventTurnId !== undefined) {
-              return sameId(activeTurnId, eventTurnId);
-            }
-            // If no active turn is tracked, accept completion scoped to this thread.
+            // Always apply turn.completed to prevent sessions stuck at "running".
+            // A completed turn must clear the running state regardless of turnId
+            // mismatch — the runtime is done and the UI must reflect that.
             return true;
           default:
             return true;
         }
       })();
+
+      if (
+        event.type === "turn.completed" &&
+        STRICT_PROVIDER_LIFECYCLE_GUARD &&
+        (conflictsWithActiveTurn || missingTurnForActiveTurn)
+      ) {
+        yield* Effect.logWarning(
+          "turn.completed accepted despite turnId mismatch — clearing running state to prevent stuck session",
+          {
+            threadId: thread.id,
+            eventTurnId: eventTurnId ?? "<missing>",
+            activeTurnId: activeTurnId ?? "<none>",
+            conflictsWithActiveTurn,
+            missingTurnForActiveTurn,
+          },
+        );
+      }
+
       const acceptedTurnStartedSourcePlan =
         event.type === "turn.started" && shouldApplyThreadLifecycle
           ? yield* getSourceProposedPlanReferenceForAcceptedTurnStart(thread.id, eventTurnId)