diff --git a/runtime.lock.json b/runtime.lock.json
index 82581de0..05d7d288 100644
--- a/runtime.lock.json
+++ b/runtime.lock.json
@@ -1,27 +1,27 @@
 {
-  "version": "0.0.14",
-  "sourceRef": "v0.0.14",
+  "version": "0.0.15",
+  "sourceRef": "v0.0.15",
   "sourceRepository": "777genius/agent_teams_orchestrator",
   "releaseRepository": "777genius/claude_agent_teams_ui",
   "releaseTag": "v1.2.0",
   "assets": {
     "darwin-arm64": {
-      "file": "agent-teams-runtime-darwin-arm64-v0.0.14.tar.gz",
+      "file": "agent-teams-runtime-darwin-arm64-v0.0.15.tar.gz",
       "archiveKind": "tar.gz",
       "binaryName": "claude-multimodel"
     },
     "darwin-x64": {
-      "file": "agent-teams-runtime-darwin-x64-v0.0.14.tar.gz",
+      "file": "agent-teams-runtime-darwin-x64-v0.0.15.tar.gz",
       "archiveKind": "tar.gz",
       "binaryName": "claude-multimodel"
     },
     "linux-x64": {
-      "file": "agent-teams-runtime-linux-x64-v0.0.14.tar.gz",
+      "file": "agent-teams-runtime-linux-x64-v0.0.15.tar.gz",
       "archiveKind": "tar.gz",
       "binaryName": "claude-multimodel"
     },
     "win32-x64": {
-      "file": "agent-teams-runtime-win32-x64-v0.0.14.zip",
+      "file": "agent-teams-runtime-win32-x64-v0.0.15.zip",
       "archiveKind": "zip",
       "binaryName": "claude-multimodel.exe"
     }
diff --git a/src/main/ipc/teams.ts b/src/main/ipc/teams.ts
index 6338d079..cd160691 100644
--- a/src/main/ipc/teams.ts
+++ b/src/main/ipc/teams.ts
@@ -1893,13 +1893,15 @@ async function handleLaunchTeam(
 
     const resolvedProviderId = explicitProviderId ?? savedRequest.providerId ?? providerId;
     const effortValidation = parseOptionalTeamEffort(
-      payload.effort ?? savedRequest.effort,
+      Object.hasOwn(payload, 'effort') ? payload.effort : savedRequest.effort,
       resolvedProviderId
     );
     if (!effortValidation.valid) {
       return { success: false, error: effortValidation.error };
     }
-    const fastModeValidation = parseOptionalTeamFastMode(payload.fastMode ?? savedRequest.fastMode);
+    const fastModeValidation = parseOptionalTeamFastMode(
+      Object.hasOwn(payload, 'fastMode') ? payload.fastMode : savedRequest.fastMode
+    );
     if (!fastModeValidation.valid) {
       return { success: false, error: fastModeValidation.error };
     }
@@ -1963,20 +1965,16 @@ async function handleLaunchTeam(
   if (!launchProviderBackendValidation.valid) {
     return { success: false, error: launchProviderBackendValidation.error };
   }
-  const rawLaunchEffort =
-    payload.effort ??
-    persistedMeta?.effort ??
-    persistedMeta?.launchIdentity?.selectedEffort ??
-    undefined;
+  const rawLaunchEffort = Object.hasOwn(payload, 'effort')
+    ? payload.effort
+    : (persistedMeta?.effort ?? persistedMeta?.launchIdentity?.selectedEffort ?? undefined);
   const effortValidation = parseOptionalTeamEffort(rawLaunchEffort, launchProviderId);
   if (!effortValidation.valid) {
     return { success: false, error: effortValidation.error };
   }
-  const rawLaunchFastMode =
-    payload.fastMode ??
-    persistedMeta?.fastMode ??
-    persistedMeta?.launchIdentity?.selectedFastMode ??
-    undefined;
+  const rawLaunchFastMode = Object.hasOwn(payload, 'fastMode')
+    ? payload.fastMode
+    : (persistedMeta?.fastMode ?? persistedMeta?.launchIdentity?.selectedFastMode ?? undefined);
   const fastModeValidation = parseOptionalTeamFastMode(rawLaunchFastMode);
   if (!fastModeValidation.valid) {
     return { success: false, error: fastModeValidation.error };
diff --git a/src/renderer/components/team/dialogs/CreateTeamDialog.tsx b/src/renderer/components/team/dialogs/CreateTeamDialog.tsx
index 2bc7cbf6..08c4e4e0 100644
--- a/src/renderer/components/team/dialogs/CreateTeamDialog.tsx
+++ b/src/renderer/components/team/dialogs/CreateTeamDialog.tsx
@@ -1677,7 +1677,7 @@ export const CreateTeamDialog = ({
         }
       }}
     >
-      <DialogContent className="max-w-3xl">
+      <DialogContent className="max-w-[52rem]">
         <DialogHeader>
           <DialogTitle className="text-sm">{initialData ? 'Copy Team' : 'Create Team'}</DialogTitle>
           <DialogDescription className="text-xs">
diff --git a/test/main/ipc/teams.test.ts b/test/main/ipc/teams.test.ts
index aef64c5e..3070bdf9 100644
--- a/test/main/ipc/teams.test.ts
+++ b/test/main/ipc/teams.test.ts
@@ -3063,6 +3063,58 @@ describe('ipc teams handlers', () => {
       }
     });
 
+    it('treats explicit default effort in launch payload as clearing persisted lead effort', async () => {
+      const claudeRoot = fs.mkdtempSync(path.join(os.tmpdir(), 'ipc-launch-default-effort-'));
+      setClaudeBasePathOverride(claudeRoot);
+      try {
+        const teamDir = path.join(claudeRoot, 'teams', 'anthropic-team');
+        fs.mkdirSync(teamDir, { recursive: true });
+        fs.writeFileSync(path.join(teamDir, 'config.json'), JSON.stringify({ teamName: 'anthropic-team' }));
+        fs.writeFileSync(
+          path.join(teamDir, 'team.meta.json'),
+          JSON.stringify({
+            version: 1,
+            displayName: 'Anthropic Team',
+            cwd: '/Users/test/project',
+            providerId: 'anthropic',
+            model: 'claude-opus-4-6[1m]',
+            effort: 'low',
+            fastMode: 'on',
+            launchIdentity: {
+              selectedModel: 'claude-opus-4-6[1m]',
+              selectedEffort: 'low',
+              selectedFastMode: 'on',
+            },
+            createdAt: Date.now(),
+          })
+        );
+
+        const handler = handlers.get(TEAM_LAUNCH)!;
+        const result = (await handler({ sender: { send: vi.fn() } } as never, {
+          teamName: 'anthropic-team',
+          cwd: os.tmpdir(),
+          providerId: 'anthropic',
+          model: 'claude-opus-4-6[1m]',
+          effort: undefined,
+          fastMode: 'inherit',
+        })) as { success: boolean };
+
+        expect(result.success).toBe(true);
+        expect(provisioningService.launchTeam).toHaveBeenCalledWith(
+          expect.objectContaining({
+            teamName: 'anthropic-team',
+            providerId: 'anthropic',
+            model: 'claude-opus-4-6[1m]',
+            effort: undefined,
+            fastMode: 'inherit',
+          }),
+          expect.any(Function)
+        );
+      } finally {
+        fs.rmSync(claudeRoot, { recursive: true, force: true });
+      }
+    });
+
     it('handleReplaceMembers accepts members: []', async () => {
       const handler = handlers.get(TEAM_REPLACE_MEMBERS)!;
       const result = (await handler({} as never, 'my-team', {