diff --git a/src/main/services/team/GitDiffFallback.ts b/src/main/services/team/GitDiffFallback.ts
index 1843da0c..1597725b 100644
--- a/src/main/services/team/GitDiffFallback.ts
+++ b/src/main/services/team/GitDiffFallback.ts
@@ -54,6 +54,7 @@ export class GitDiffFallback {
         cwd: projectPath,
         maxBuffer: GIT_MAX_BUFFER,
         timeout: GIT_TIMEOUT,
+        windowsHide: true,
       });
       return stdout;
     } catch {
@@ -75,7 +76,7 @@ export class GitDiffFallback {
       const { stdout } = await execFileAsync(
         'git',
         ['log', '--format=%H', '--before', timestamp, '-1', '--', relativePath],
-        { cwd: projectPath, timeout: GIT_TIMEOUT }
+        { cwd: projectPath, timeout: GIT_TIMEOUT, windowsHide: true }
       );
       return stdout.trim() || null;
     } catch {
@@ -98,7 +99,7 @@ export class GitDiffFallback {
       const { stdout } = await execFileAsync(
         'git',
         ['diff', fromCommit, toCommit, '--', relativePath],
-        { cwd: projectPath, timeout: GIT_TIMEOUT }
+        { cwd: projectPath, timeout: GIT_TIMEOUT, windowsHide: true }
       );
       return stdout || null;
     } catch {
@@ -120,7 +121,7 @@ export class GitDiffFallback {
       const { stdout } = await execFileAsync(
         'git',
         ['log', `--max-count=${maxCount}`, '--format=%H|%aI|%s', '--', relativePath],
-        { cwd: projectPath, timeout: GIT_TIMEOUT }
+        { cwd: projectPath, timeout: GIT_TIMEOUT, windowsHide: true }
       );
 
       return stdout
@@ -148,6 +149,7 @@ export class GitDiffFallback {
       await execFileAsync('git', ['rev-parse', '--is-inside-work-tree'], {
         cwd: projectPath,
         timeout: GIT_TIMEOUT,
+        windowsHide: true,
       });
       this.gitRepoCache.set(projectPath, true);
       return true;
diff --git a/src/main/services/team/TeamMcpConfigBuilder.ts b/src/main/services/team/TeamMcpConfigBuilder.ts
index d34e856a..2411b3ea 100644
--- a/src/main/services/team/TeamMcpConfigBuilder.ts
+++ b/src/main/services/team/TeamMcpConfigBuilder.ts
@@ -3,8 +3,8 @@ import {
   getMcpConfigsBasePath,
   getMcpServerBasePath,
 } from '@main/utils/pathDecoder';
+import { execCli } from '@main/utils/childProcess';
 import { createLogger } from '@shared/utils/logger';
-import { execFile } from 'child_process';
 import { randomUUID } from 'crypto';
 import * as fs from 'fs';
 import * as path from 'path';
@@ -185,17 +185,11 @@ async function resolveNodePath(options?: McpLaunchSpecResolveOptions): Promise<s
 
   try {
     emitProgress(options, 'node-runtime', 'Resolving Node.js runtime for MCP server...');
-    const resolved = await new Promise<string>((resolve, reject) => {
-      execFile(
-        'node',
-        ['-e', 'process.stdout.write(process.execPath)'],
-        {
-          encoding: 'utf-8',
-          timeout: 5000,
-        },
-        (err, stdout) => (err ? reject(err) : resolve(stdout.trim()))
-      );
+    const { stdout } = await execCli('node', ['-e', 'process.stdout.write(process.execPath)'], {
+      encoding: 'utf-8',
+      timeout: 5000,
     });
+    const resolved = stdout.trim();
     if (resolved) {
       _resolvedNodePath = resolved;
       emitProgress(options, 'node-runtime-found', 'Using resolved Node.js runtime...');
diff --git a/src/main/services/team/TeamMemberWorktreeManager.ts b/src/main/services/team/TeamMemberWorktreeManager.ts
index 94b613e0..c4e941c0 100644
--- a/src/main/services/team/TeamMemberWorktreeManager.ts
+++ b/src/main/services/team/TeamMemberWorktreeManager.ts
@@ -28,7 +28,7 @@ function execGit(args: string[], cwd: string): Promise<string> {
     execFile(
       'git',
       args,
-      { cwd, timeout: GIT_TIMEOUT_MS, maxBuffer: 1024 * 1024 },
+      { cwd, timeout: GIT_TIMEOUT_MS, maxBuffer: 1024 * 1024, windowsHide: true },
       (error, stdout, stderr) => {
         if (error) {
           const message = String(stderr || error.message || 'git command failed').trim();
diff --git a/src/main/services/team/TeamProvisioningService.ts b/src/main/services/team/TeamProvisioningService.ts
index dac4d51a..51c5dd4e 100644
--- a/src/main/services/team/TeamProvisioningService.ts
+++ b/src/main/services/team/TeamProvisioningService.ts
@@ -6426,6 +6426,7 @@ export class TeamProvisioningService {
           encoding: 'utf8',
           maxBuffer: 16 * 1024,
           timeout: 1000,
+          windowsHide: true,
         },
         (error, stdout) => {
           if (error) {
diff --git a/src/main/services/team/TeamWorktreeGitService.ts b/src/main/services/team/TeamWorktreeGitService.ts
index f03e2c85..24dd6207 100644
--- a/src/main/services/team/TeamWorktreeGitService.ts
+++ b/src/main/services/team/TeamWorktreeGitService.ts
@@ -11,7 +11,7 @@ function execGit(args: string[], cwd: string): Promise<string> {
     execFile(
       'git',
       args,
-      { cwd, timeout: GIT_TIMEOUT_MS, maxBuffer: 1024 * 1024 },
+      { cwd, timeout: GIT_TIMEOUT_MS, maxBuffer: 1024 * 1024, windowsHide: true },
       (error, stdout, stderr) => {
         if (error) {
           const message = String(stderr || error.message || 'git command failed').trim();
diff --git a/src/main/services/team/opencode/bridge/OpenCodeManagedHostProcessCleanup.ts b/src/main/services/team/opencode/bridge/OpenCodeManagedHostProcessCleanup.ts
index e63a2122..cf06b3f0 100644
--- a/src/main/services/team/opencode/bridge/OpenCodeManagedHostProcessCleanup.ts
+++ b/src/main/services/team/opencode/bridge/OpenCodeManagedHostProcessCleanup.ts
@@ -278,6 +278,7 @@ function execFileText(
         encoding: 'utf8',
         timeout,
         maxBuffer,
+        windowsHide: true,
       },
       (error: ExecFileException | null, stdout: string | Buffer) => {
         if (error) {
diff --git a/src/main/utils/childProcess.ts b/src/main/utils/childProcess.ts
index 7305f824..619d384d 100644
--- a/src/main/utils/childProcess.ts
+++ b/src/main/utils/childProcess.ts
@@ -376,8 +376,8 @@ export function killProcessTree(
         'System32',
         'taskkill.exe'
       );
-      execFile(taskkillPath, ['/T', '/F', '/PID', String(child.pid)], () => {
-        // Best-effort — ignore errors (process may have already exited)
+      execFile(taskkillPath, ['/T', '/F', '/PID', String(child.pid)], { windowsHide: true }, () => {
+        // Best-effort - ignore errors (process may have already exited)
       });
       return;
     } catch {
diff --git a/src/main/utils/processKill.ts b/src/main/utils/processKill.ts
index fdcf4fcd..c02401ac 100644
--- a/src/main/utils/processKill.ts
+++ b/src/main/utils/processKill.ts
@@ -21,8 +21,8 @@ export function killProcessByPid(pid: number): void {
         'System32',
         'taskkill.exe'
       );
-      execFile(taskkillPath, ['/T', '/F', '/PID', String(pid)], () => {
-        // Best-effort — ignore errors (process may have already exited)
+      execFile(taskkillPath, ['/T', '/F', '/PID', String(pid)], { windowsHide: true }, () => {
+        // Best-effort - ignore errors (process may have already exited)
       });
     } catch {
       // taskkill failed to spawn, fall through to process.kill()
diff --git a/src/main/utils/shellEnv.ts b/src/main/utils/shellEnv.ts
index 5a621e72..f3cd0646 100644
--- a/src/main/utils/shellEnv.ts
+++ b/src/main/utils/shellEnv.ts
@@ -87,6 +87,7 @@ async function readShellEnv(shellPath: string, args: string[]): Promise<NodeJS.P
     const child = spawn(shellPath, args, {
       env: process.env,
       stdio: ['ignore', 'pipe', 'ignore'],
+      windowsHide: true,
     });
     const chunks: Buffer[] = [];
     let settled = false;
diff --git a/test/main/services/team/TeamMcpConfigBuilder.test.ts b/test/main/services/team/TeamMcpConfigBuilder.test.ts
index cf98ab04..6ba53f95 100644
--- a/test/main/services/team/TeamMcpConfigBuilder.test.ts
+++ b/test/main/services/team/TeamMcpConfigBuilder.test.ts
@@ -9,19 +9,7 @@ const hoisted = vi.hoisted(() => ({
     isPackaged: false,
     version: '9.9.9-test',
   },
-  execFileMock: vi.fn(
-    (
-      _file: string,
-      _args: readonly string[],
-      _options:
-        | { encoding?: string; timeout?: number }
-        | ((error: Error | null, stdout: string, stderr: string) => void),
-      callback?: (error: Error | null, stdout: string, stderr: string) => void
-    ) => {
-      const cb = typeof _options === 'function' ? _options : callback;
-      cb?.(null, '/mock/node', '');
-    }
-  ),
+  execCliMock: vi.fn(async () => ({ stdout: '/mock/node', stderr: '' })),
 }));
 
 let mockHomeDir = '';
@@ -29,11 +17,11 @@ type ModuleLoad = (request: string, parent: NodeModule | undefined, isMain: bool
 const moduleInternal = Module as unknown as { _load: ModuleLoad };
 const originalModuleLoad = moduleInternal._load;
 
-vi.mock('child_process', async (importOriginal) => {
-  const actual = await importOriginal<typeof import('child_process')>();
+vi.mock('@main/utils/childProcess', async (importOriginal) => {
+  const actual = await importOriginal<typeof import('@main/utils/childProcess')>();
   return {
     ...actual,
-    execFile: hoisted.execFileMock,
+    execCli: hoisted.execCliMock,
   };
 });
 
@@ -189,7 +177,7 @@ describe('TeamMcpConfigBuilder', () => {
     setAppDataBasePath(tempAppData);
     setPackagedMode(false);
     setResourcesPath(undefined);
-    hoisted.execFileMock.mockClear();
+    hoisted.execCliMock.mockClear();
   });
 
   afterEach(() => {
@@ -283,6 +271,21 @@ describe('TeamMcpConfigBuilder', () => {
     expectNodeEntry(server, builtEntry);
   });
 
+  it('uses the shared CLI helper for the Node.js runtime resolver', async () => {
+    mockBuiltWorkspaceEntryAvailable();
+    const builder = new TeamMcpConfigBuilder();
+
+    const configPath = await builder.writeConfigFile();
+    createdPaths.push(configPath);
+
+    expect(readGeneratedServer(configPath)?.command).toBe('/mock/node');
+    expect(hoisted.execCliMock).toHaveBeenCalledWith(
+      'node',
+      ['-e', 'process.stdout.write(process.execPath)'],
+      expect.objectContaining({ encoding: 'utf-8', timeout: 5000 })
+    );
+  });
+
   it('keeps generated team MCP config minimal and does not inline top-level user MCP', async () => {
     const homeDir = fs.mkdtempSync(path.join(os.tmpdir(), 'team-mcp-home-'));
     const projectDir = fs.mkdtempSync(path.join(os.tmpdir(), 'team-mcp-project-'));
diff --git a/test/main/utils/shellEnv.test.ts b/test/main/utils/shellEnv.test.ts
index 35aa053c..aa26b08f 100644
--- a/test/main/utils/shellEnv.test.ts
+++ b/test/main/utils/shellEnv.test.ts
@@ -117,13 +117,13 @@ describe('shellEnv', () => {
       1,
       '/bin/zsh',
       ['-lic', 'env -0'],
-      expect.any(Object)
+      expect.objectContaining({ windowsHide: true })
     );
     expect(hoisted.spawn).toHaveBeenNthCalledWith(
       2,
       '/bin/zsh',
       ['-ic', 'env -0'],
-      expect.any(Object)
+      expect.objectContaining({ windowsHide: true })
     );
   });