refactor(§7.5): rinomina Setup-* Install-CIToolchain-* (WinBuild2025/2022/Linux2404)

- template/Setup-WinBuild2025.ps1  Install-CIToolchain-WinBuild2025.ps1
- template/Setup-WinBuild2022.ps1  Install-CIToolchain-WinBuild2022.ps1
- template/Setup-LinuxBuild2404.sh  Install-CIToolchain-Linux2404.sh

Aggiornati tutti i riferimenti in: Prepare-WinBuild2025/2022, Prepare-LinuxBuild2404,
Deploy-WinBuild2025/2022/LinuxBuild2404, Validate-DeployState, Validate-SetupState,
README.md, TODO.md, docs/WINDOWS-TEMPLATE-SETUP.md, docs/LINUX-TEMPLATE-SETUP.md,
docs/TEST-PLAN-v1.3-to-HEAD.md, gitea/actions/local-ci-build/action.yml.

§7 chiuso (5/5 done).

template/Deploy-LinuxBuild2404.ps1

@@ -1,4 +1,4 @@
-#Requires -Version 5.1
+#Requires -Version 5.1
 <#
 .SYNOPSIS
     Deploys an Ubuntu 24.04 LTS build VM on VMware Workstation using a cloud
@@ -24,7 +24,7 @@
       both files and creates the $CloudUser account with the SSH public key.
       No packages are installed and no runcmd runs: all provisioning (apt,
       toolchain, SSH hardening, swap) is handled by Prepare-LinuxBuild2404.ps1
-      via Setup-LinuxBuild2404.sh. Step 9 waits for
+      via Install-CIToolchain-Linux2404.sh. Step 9 waits for
       /var/lib/cloud/instance/boot-finished before proceeding.
 
     NIC:
@@ -676,3 +676,4 @@ Write-Host "  Next steps (from template\ dir):"
 Write-Host "    .\Prepare-LinuxBuild2404.ps1 -VMXPath '$VMXPath' -VMIPAddress $guestIP"
 Write-Host ""
 Write-Host "  VM is powered on. cloud-init provisioning complete." -ForegroundColor Green
+