diff --git a/apps/server/src/orchestration/Layers/ProjectionPipeline.test.ts b/apps/server/src/orchestration/Layers/ProjectionPipeline.test.ts
index 369eea0f7a0..e85bb5bd54f 100644
--- a/apps/server/src/orchestration/Layers/ProjectionPipeline.test.ts
+++ b/apps/server/src/orchestration/Layers/ProjectionPipeline.test.ts
@@ -1656,6 +1656,142 @@ it.layer(BaseTestLayer)("OrchestrationProjectionPipeline", (it) => {
     }),
   );
 
+  it.effect("clears stale pending user input from projected shell summaries", () =>
+    Effect.gen(function* () {
+      const projectionPipeline = yield* OrchestrationProjectionPipeline;
+      const eventStore = yield* OrchestrationEventStore;
+      const sql = yield* SqlClient.SqlClient;
+      const appendAndProject = (event: Parameters<typeof eventStore.append>[0]) =>
+        eventStore
+          .append(event)
+          .pipe(Effect.flatMap((savedEvent) => projectionPipeline.projectEvent(savedEvent)));
+
+      yield* appendAndProject({
+        type: "project.created",
+        eventId: EventId.make("evt-stale-user-input-1"),
+        aggregateKind: "project",
+        aggregateId: ProjectId.make("project-stale-user-input"),
+        occurredAt: "2026-02-26T12:35:00.000Z",
+        commandId: CommandId.make("cmd-stale-user-input-1"),
+        causationEventId: null,
+        correlationId: CorrelationId.make("cmd-stale-user-input-1"),
+        metadata: {},
+        payload: {
+          projectId: ProjectId.make("project-stale-user-input"),
+          title: "Project Stale User Input",
+          workspaceRoot: "/tmp/project-stale-user-input",
+          defaultModelSelection: null,
+          scripts: [],
+          createdAt: "2026-02-26T12:35:00.000Z",
+          updatedAt: "2026-02-26T12:35:00.000Z",
+        },
+      });
+
+      yield* appendAndProject({
+        type: "thread.created",
+        eventId: EventId.make("evt-stale-user-input-2"),
+        aggregateKind: "thread",
+        aggregateId: ThreadId.make("thread-stale-user-input"),
+        occurredAt: "2026-02-26T12:35:01.000Z",
+        commandId: CommandId.make("cmd-stale-user-input-2"),
+        causationEventId: null,
+        correlationId: CorrelationId.make("cmd-stale-user-input-2"),
+        metadata: {},
+        payload: {
+          threadId: ThreadId.make("thread-stale-user-input"),
+          projectId: ProjectId.make("project-stale-user-input"),
+          title: "Thread Stale User Input",
+          modelSelection: {
+            instanceId: ProviderInstanceId.make("codex"),
+            model: "gpt-5-codex",
+          },
+          runtimeMode: "approval-required",
+          interactionMode: "default",
+          branch: null,
+          worktreePath: null,
+          createdAt: "2026-02-26T12:35:01.000Z",
+          updatedAt: "2026-02-26T12:35:01.000Z",
+        },
+      });
+
+      yield* appendAndProject({
+        type: "thread.activity-appended",
+        eventId: EventId.make("evt-stale-user-input-3"),
+        aggregateKind: "thread",
+        aggregateId: ThreadId.make("thread-stale-user-input"),
+        occurredAt: "2026-02-26T12:35:02.000Z",
+        commandId: CommandId.make("cmd-stale-user-input-3"),
+        causationEventId: null,
+        correlationId: CorrelationId.make("cmd-stale-user-input-3"),
+        metadata: {},
+        payload: {
+          threadId: ThreadId.make("thread-stale-user-input"),
+          activity: {
+            id: EventId.make("activity-stale-user-input-requested"),
+            tone: "info",
+            kind: "user-input.requested",
+            summary: "User input requested",
+            payload: {
+              requestId: "user-input-request-stale-1",
+              questions: [
+                {
+                  id: "sandbox_mode",
+                  header: "Sandbox",
+                  question: "Which mode should be used?",
+                  options: [
+                    {
+                      label: "workspace-write",
+                      description: "Allow workspace writes only",
+                    },
+                  ],
+                },
+              ],
+            },
+            turnId: null,
+            createdAt: "2026-02-26T12:35:02.000Z",
+          },
+        },
+      });
+
+      yield* appendAndProject({
+        type: "thread.activity-appended",
+        eventId: EventId.make("evt-stale-user-input-4"),
+        aggregateKind: "thread",
+        aggregateId: ThreadId.make("thread-stale-user-input"),
+        occurredAt: "2026-02-26T12:35:03.000Z",
+        commandId: CommandId.make("cmd-stale-user-input-4"),
+        causationEventId: null,
+        correlationId: CorrelationId.make("cmd-stale-user-input-4"),
+        metadata: {},
+        payload: {
+          threadId: ThreadId.make("thread-stale-user-input"),
+          activity: {
+            id: EventId.make("activity-stale-user-input-failed"),
+            tone: "error",
+            kind: "provider.user-input.respond.failed",
+            summary: "Provider user input response failed",
+            payload: {
+              requestId: "user-input-request-stale-1",
+              detail:
+                "Provider adapter request failed (codex) for item/tool/requestUserInput: Unknown pending Codex user input request: user-input-request-stale-1",
+            },
+            turnId: null,
+            createdAt: "2026-02-26T12:35:03.000Z",
+          },
+        },
+      });
+
+      const threadRows = yield* sql<{
+        readonly pendingUserInputCount: number;
+      }>`
+        SELECT pending_user_input_count AS "pendingUserInputCount"
+        FROM projection_threads
+        WHERE thread_id = 'thread-stale-user-input'
+      `;
+      assert.deepEqual(threadRows, [{ pendingUserInputCount: 0 }]);
+    }),
+  );
+
   it.effect("ignores non-stale provider approval response failures", () =>
     Effect.gen(function* () {
       const projectionPipeline = yield* OrchestrationProjectionPipeline;
diff --git a/apps/server/src/orchestration/Layers/ProjectionPipeline.ts b/apps/server/src/orchestration/Layers/ProjectionPipeline.ts
index 1161ff6a7d7..4ffc08e4cd0 100644
--- a/apps/server/src/orchestration/Layers/ProjectionPipeline.ts
+++ b/apps/server/src/orchestration/Layers/ProjectionPipeline.ts
@@ -141,7 +141,9 @@ function derivePendingUserInputCountFromActivities(
       activity.kind === "provider.user-input.respond.failed" &&
       detail !== null &&
       (detail.includes("stale pending user-input request") ||
-        detail.includes("unknown pending user-input request"))
+        detail.includes("unknown pending user-input request") ||
+        detail.includes("unknown pending user input request") ||
+        detail.includes("unknown pending codex user input request"))
     ) {
       openRequestIds.delete(requestId);
     }
diff --git a/apps/server/src/orchestration/Layers/ProviderCommandReactor.test.ts b/apps/server/src/orchestration/Layers/ProviderCommandReactor.test.ts
index 571164fad93..2a2ab082394 100644
--- a/apps/server/src/orchestration/Layers/ProviderCommandReactor.test.ts
+++ b/apps/server/src/orchestration/Layers/ProviderCommandReactor.test.ts
@@ -1857,7 +1857,7 @@ describe("ProviderCommandReactor", () => {
     expect(resolvedActivity).toBeUndefined();
   });
 
-  it("surfaces stale provider user-input failures without faking user-input resolution", async () => {
+  it("surfaces non-resumable provider user-input callbacks as stale failures", async () => {
     const harness = await createHarness();
     const now = "2026-01-01T00:00:00.000Z";
     harness.respondToUserInput.mockImplementation(() =>
@@ -1865,7 +1865,7 @@ describe("ProviderCommandReactor", () => {
         new ProviderAdapterRequestError({
           provider: ProviderDriverKind.make("claudeAgent"),
           method: "item/tool/respondToUserInput",
-          detail: "Unknown pending user-input request: user-input-request-1",
+          detail: "Unknown pending Codex user input request: user-input-request-1",
         }),
       ),
     );
diff --git a/apps/server/src/orchestration/Layers/ProviderCommandReactor.ts b/apps/server/src/orchestration/Layers/ProviderCommandReactor.ts
index 8b71a976808..9453fa9a061 100644
--- a/apps/server/src/orchestration/Layers/ProviderCommandReactor.ts
+++ b/apps/server/src/orchestration/Layers/ProviderCommandReactor.ts
@@ -142,9 +142,19 @@ function isUnknownPendingApprovalRequestError(cause: Cause.Cause<ProviderService
 function isUnknownPendingUserInputRequestError(cause: Cause.Cause<ProviderServiceError>): boolean {
   const error = findProviderAdapterRequestError(cause);
   if (error) {
-    return error.detail.toLowerCase().includes("unknown pending user-input request");
+    const detail = error.detail.toLowerCase();
+    return (
+      detail.includes("unknown pending user-input request") ||
+      detail.includes("unknown pending user input request") ||
+      detail.includes("unknown pending codex user input request")
+    );
   }
-  return Cause.pretty(cause).toLowerCase().includes("unknown pending user-input request");
+  const message = Cause.pretty(cause).toLowerCase();
+  return (
+    message.includes("unknown pending user-input request") ||
+    message.includes("unknown pending user input request") ||
+    message.includes("unknown pending codex user input request")
+  );
 }
 
 function stalePendingRequestDetail(
diff --git a/apps/web/src/session-logic.test.ts b/apps/web/src/session-logic.test.ts
index baf384d6af2..14c1d115f98 100644
--- a/apps/web/src/session-logic.test.ts
+++ b/apps/web/src/session-logic.test.ts
@@ -297,7 +297,7 @@ describe("derivePendingUserInputs", () => {
         payload: {
           requestId: "req-user-input-stale-1",
           detail:
-            "Stale pending user-input request: req-user-input-stale-1. Provider callback state does not survive app restarts or recovered sessions. Restart the turn to continue.",
+            "Provider adapter request failed (codex) for item/tool/requestUserInput: Unknown pending Codex user input request: req-user-input-stale-1",
         },
       }),
     ];
diff --git a/apps/web/src/session-logic.ts b/apps/web/src/session-logic.ts
index a7767672fa1..5a07575bab5 100644
--- a/apps/web/src/session-logic.ts
+++ b/apps/web/src/session-logic.ts
@@ -201,7 +201,9 @@ function isStalePendingRequestFailureDetail(detail: string | undefined): boolean
     normalized.includes("stale pending user-input request") ||
     normalized.includes("unknown pending approval request") ||
     normalized.includes("unknown pending permission request") ||
-    normalized.includes("unknown pending user-input request")
+    normalized.includes("unknown pending user-input request") ||
+    normalized.includes("unknown pending user input request") ||
+    normalized.includes("unknown pending codex user input request")
   );
 }