diff --git a/test/features/anthropic-runtime-profile/resolveAnthropicRuntimeProfile.test.ts b/test/features/anthropic-runtime-profile/resolveAnthropicRuntimeProfile.test.ts
index 2191c5dd..6203c9e0 100644
--- a/test/features/anthropic-runtime-profile/resolveAnthropicRuntimeProfile.test.ts
+++ b/test/features/anthropic-runtime-profile/resolveAnthropicRuntimeProfile.test.ts
@@ -227,6 +227,58 @@ describe('resolveAnthropicRuntimeProfile', () => {
     });
   });
 
+  it('keeps Default effort empty for Anthropic 1M models that do not support effort', () => {
+    const selection = resolveAnthropicRuntimeSelection({
+      source: createAnthropicSource({
+        defaultLaunchModel: 'opus[1m]',
+        models: [
+          {
+            id: 'opus[1m]',
+            launchModel: 'opus[1m]',
+            displayName: 'Opus 4.7 (1M)',
+            hidden: false,
+            supportedReasoningEfforts: [],
+            defaultReasoningEffort: null,
+            inputModalities: ['text', 'image'],
+            supportsFastMode: false,
+            supportsPersonality: false,
+            isDefault: true,
+            upgrade: false,
+            source: 'anthropic-models-api',
+          },
+        ],
+      }),
+      selectedModel: 'opus[1m]',
+      limitContext: false,
+    });
+
+    expect(selection.supportedEfforts).toEqual([]);
+    expect(selection.defaultEffort).toBeNull();
+    expect(
+      reconcileAnthropicRuntimeSelections({
+        selection,
+        selectedEffort: '',
+        selectedFastMode: 'inherit',
+        providerFastModeDefault: false,
+      })
+    ).toEqual({
+      nextEffort: '',
+      effortResetReason: null,
+      nextFastMode: 'inherit',
+      fastModeResetReason: null,
+    });
+    expect(
+      resolveAnthropicEffortSupport({
+        selection,
+        effort: 'medium',
+        runtimeCapabilities: createAnthropicSource({
+          defaultLaunchModel: 'opus[1m]',
+          models: [],
+        }).runtimeCapabilities,
+      })
+    ).toEqual({ kind: 'unsupported-by-catalog', supportedEfforts: [] });
+  });
+
   it('does not reset explicit max or fast while runtime catalog truth is still unavailable', () => {
     const selection = resolveAnthropicRuntimeSelection({
       source: {
diff --git a/test/main/services/team/TeamLaunchFailureArtifactPack.test.ts b/test/main/services/team/TeamLaunchFailureArtifactPack.test.ts
index ae8265b1..445cef1d 100644
--- a/test/main/services/team/TeamLaunchFailureArtifactPack.test.ts
+++ b/test/main/services/team/TeamLaunchFailureArtifactPack.test.ts
@@ -1,7 +1,6 @@
 import * as fs from 'fs/promises';
 import * as os from 'os';
 import * as path from 'path';
-
 import { afterEach, beforeEach, describe, expect, it } from 'vitest';
 
 import {
@@ -196,6 +195,52 @@ describe('TeamLaunchFailureArtifactPack', () => {
     });
   });
 
+  it('keeps inbox poller bootstrap stalls out of stdin_missing classification', () => {
+    const input = {
+      teamName: 'artifact-team',
+      runId: 'run-inbox-ready-no-submit',
+      reason:
+        'atlas: Teammate process atlas@signal-ops did not submit bootstrap prompt: timed out waiting for bootstrap_submitted; last transport stage: inbox_poller_ready: initial poll observed bootstrap prompt Last stderr: Warning: no stdin data received in 3s, proceeding without it.',
+      progressTraceLines: [
+        'mailbox_bootstrap_written detail=messageId=bootstrap-atlas-2',
+        'inbox_poller_ready detail=initial poll observed bootstrap prompt',
+        'Warning: no stdin data received in 3s, proceeding without it.',
+      ],
+    };
+
+    expect(classifyLaunchFailureArtifact(input).code).toBe('model_no_bootstrap');
+    expect(extractLaunchBootstrapTransportBreadcrumb(input)).toMatchObject({
+      lastTransportStage: expect.stringContaining(
+        'inbox_poller_ready: initial poll observed bootstrap prompt'
+      ),
+      noStdinWarning: true,
+      bootstrapSubmitted: false,
+    });
+  });
+
+  it('keeps submit-attempt stalls out of stdin_missing classification', () => {
+    const input = {
+      teamName: 'artifact-team',
+      runId: 'run-submit-attempt-no-submit',
+      reason:
+        'bob: Teammate process bob@signal-ops did not submit bootstrap prompt: timed out waiting for bootstrap_submitted; last transport stage: bootstrap_submit_attempted: submitting bootstrap prompt Last stderr: Warning: no stdin data received in 3s, proceeding without it.',
+      progressTraceLines: [
+        'mailbox_bootstrap_written detail=messageId=bootstrap-bob-1',
+        'bootstrap_submit_attempted detail=submitting bootstrap prompt',
+        'Warning: no stdin data received in 3s, proceeding without it.',
+      ],
+    };
+
+    expect(classifyLaunchFailureArtifact(input).code).toBe('model_no_bootstrap');
+    expect(extractLaunchBootstrapTransportBreadcrumb(input)).toMatchObject({
+      lastTransportStage: expect.stringContaining(
+        'bootstrap_submit_attempted: submitting bootstrap prompt'
+      ),
+      noStdinWarning: true,
+      bootstrapSubmitted: false,
+    });
+  });
+
   it('classifies provider quota separately from protocol errors', () => {
     expect(
       classifyLaunchFailureArtifact({