Suppress Git Credential Manager OAuth popup on git clone (fixes #7652)

Orca's git runner disables the interactive credential prompt on every git
call that goes through gitExecFileAsync/gitStreamStdout, but the two raw
'git clone' spawns (desktop repos:clone and the runtime clone path) passed
no env, so they inherited process.env with no guard. On Windows a clone
that needs GitHub auth then makes Git Credential Manager pop its
'Connect to GitHub' OAuth window, and in a network-restricted intranet the
browser/device flow never completes while git's credential retry re-pops it.

Apply nonInteractiveGitEnv() to both clone spawns so the prompt is
suppressed (GCM_INTERACTIVE=never, credential.interactive=false,
GIT_TERMINAL_PROMPT=0). The credential *helper* is kept, so cached-token
clones for private repos still work; only the interactive fallback popup is
disabled and the clone fails fast with a clear error instead.

src/main/ipc/repos-remote.test.ts

@@ -103,7 +103,14 @@ vi.mock('../git/repo', async () => {
 
 vi.mock('../git/runner', () => ({
   gitExecFileAsync: vi.fn(),
-  gitSpawn: gitSpawnMock
+  gitSpawn: gitSpawnMock,
+  // Mirrors the real guard's credential-prompt markers so the clone regression
+  // test (#7652) can assert Git Credential Manager's OAuth popup is disabled.
+  nonInteractiveGitEnv: (env: NodeJS.ProcessEnv = process.env) => ({
+    ...env,
+    GIT_TERMINAL_PROMPT: '0',
+    GCM_INTERACTIVE: 'never'
+  })
 }))
 
 vi.mock('../git/worktree', () => ({
@@ -2067,6 +2074,28 @@ describe('repos:add + repos:clone', () => {
     expect(result).toHaveProperty('path', join(destination, 'orca'))
   })
 
+  it('clones with the non-interactive credential guard so Git Credential Manager cannot pop its OAuth window (#7652)', async () => {
+    const destination = await createTempRoot()
+
+    await handlers.get('repos:clone')!(null, {
+      url: 'https://example.com/orca.git',
+      destination
+    })
+
+    // Without this env, a clone that needs GitHub auth makes Git Credential
+    // Manager pop its "Connect to GitHub" OAuth window on Windows and loop it
+    // when the network cannot complete the flow.
+    expect(gitSpawnMock).toHaveBeenCalledWith(
+      ['clone', '--progress', '--', 'https://example.com/orca.git', join(destination, 'orca')],
+      expect.objectContaining({
+        env: expect.objectContaining({
+          GIT_TERMINAL_PROMPT: '0',
+          GCM_INTERACTIVE: 'never'
+        })
+      })
+    )
+  })
+
   it('treats cloneAbort with no active clone as a no-op', async () => {
     await expect(handlers.get('repos:cloneAbort')!(null, undefined)).resolves.toBeUndefined()
   })

src/main/ipc/repos.ts

@@ -42,7 +42,7 @@ import { isTuiAgent } from '../../shared/tui-agent-config'
 import { invalidateAuthorizedRootsCache } from './filesystem-auth'
 import type { ChildProcess } from 'node:child_process'
 import { access, mkdir, readdir, rm } from 'node:fs/promises'
-import { gitExecFileAsync, gitSpawn } from '../git/runner'
+import { gitExecFileAsync, gitSpawn, nonInteractiveGitEnv } from '../git/runner'
 import { isAbsolute, join, posix } from 'node:path'
 import {
   cleanupClaimedCloneTarget,
@@ -2253,6 +2253,13 @@ export function registerRepoHandlers(mainWindow: BrowserWindow, store: Store): v
           try {
             proc = gitSpawn(['clone', '--progress', '--', args.url, clonePath], {
               cwd: args.destination,
+              // Why: without the non-interactive guard, a clone that needs
+              // GitHub auth makes Git Credential Manager pop its "Connect to
+              // GitHub" OAuth window on Windows; in a network-restricted env the
+              // browser/device flow can never complete and git's credential
+              // retry re-pops it (issue #7652). Fail fast with a clear error and
+              // let Orca's non-intrusive GitHub state stand instead.
+              env: nonInteractiveGitEnv(),
               stdio: ['ignore', 'ignore', 'pipe']
             })
           } catch (err) {

src/main/runtime/orca-runtime.ts

@@ -41,7 +41,7 @@ import {
   AGENT_PROMPT_SUBMIT_DELAY_MS,
   buildAgentPromptPasteBytes
 } from '../../shared/agent-prompt-injection'
-import { gitExecFileAsync, wslAwareSpawn } from '../git/runner'
+import { gitExecFileAsync, wslAwareSpawn, nonInteractiveGitEnv } from '../git/runner'
 import {
   cleanupClaimedCloneTarget,
   claimCloneTarget,
@@ -10666,6 +10666,12 @@ export class OrcaRuntimeService {
       try {
         proc = wslAwareSpawn('git', ['clone', '--progress', '--', trimmedUrl, clonePath], {
           cwd: trimmedDestination,
+          // Why: without the non-interactive guard, a clone that needs GitHub
+          // auth makes Git Credential Manager pop its "Connect to GitHub" OAuth
+          // window on Windows; in a network-restricted env the browser/device
+          // flow can never complete and git's credential retry re-pops it
+          // (issue #7652). Fail fast with a clear error instead.
+          env: nonInteractiveGitEnv(),
           stdio: ['ignore', 'ignore', 'pipe']
         })
       } catch (err) {