[Windows] git.exe console window flashes on daemon startup and branch switch

[XinAnzzZ]

Environment

• OS: Windows 11
• codegraph version: 0.9.6
• Node: v24.12.0
• Terminal: Windows Terminal

Steps to reproduce

1. Initialize codegraph in any git repository (codegraph init -i)
2. Run codegraph serve --mcp
3. Observe: multiple cmd/console windows flash immediately on daemon startup
4. Run git checkout <branch>
5. Observe: cmd/console windows flash again on every branch switch
6. Kill the daemon (codegraph stop)
7. Run git checkout <branch> again
8. Observe: no flashing — confirms daemon is the trigger

Expected behavior

No console windows should appear. Git subprocess calls should be hidden on Windows.

Actual behavior

Multiple cmd console windows flash briefly on:

• Daemon startup (connect-time reconciliation)
• Every git checkout / branch switch while daemon is running

--no-watch does not resolve the issue, which suggests the flashing
comes from the connect-time reconciliation path or the branch-switch handler,
not the file watcher path.

Analysis

The watcher path appears to already use windowsHide: true per the source
code. However, the reconciliation path triggered on daemon startup and on
branch switches appears to be spawning git.exe without windowsHide: true,
causing visible console flashes on Windows.

Screen recording