refactor(config): Update VMX path from CI-WinBuild to WinBuild2025

Replace all references to CI-WinBuild.vmx with WinBuild2025.vmx.
Update template path: F:\CI\Templates\WinBuild\ → F:\CI\Templates\WinBuild2025\

Files affected:
- runner/config.yaml: GITEA_CI_TEMPLATE_PATH env var
- docs: HOST-SETUP.md, WINDOWS-TEMPLATE-SETUP.md, TEST-PLAN, RUNBOOK
- scripts: Measure-CIBenchmark, Set-TemplateSharedFolders, Test-NsinnounpBuild
- TODO.md, Setup-Host.ps1, README.md

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Setup-Host.ps1

@@ -339,7 +339,7 @@ Write-Host "    $CIRoot\ISO\"
 Write-Host ""
 Write-Host " 3. Provision the template VM:"
 Write-Host "    a. Create VM in VMware Workstation (4 vCPU, 6 GB RAM, 80 GB thin)"
-Write-Host "       VMX: $CIRoot\Templates\WinBuild\CI-WinBuild.vmx"
+Write-Host "       VMX: $CIRoot\Templates\WinBuild\WinBuild2025.vmx"
 Write-Host "       NIC: VMnet8 (NAT) — internet required during provisioning"
 Write-Host "    b. Install Windows Server 2025 + enable WinRM inside VM"
 Write-Host "    c. From this host run:"
@@ -354,3 +354,4 @@ Write-Host ""
 Write-Host " 5. Verify act_runner is Online in Gitea:"
 Write-Host "    $GiteaUrl/-/admin/runners"
 Write-Host ""
+