First hook

scripts/install-hook.bat

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+@echo off
+set SCRIPT_DIR=%~dp0
+
+powershell.exe ^
+  -NoProfile ^
+  -ExecutionPolicy Bypass ^
+  -File "%SCRIPT_DIR%install-hook.ps1" ^
+  %*
+
+pause

scripts/install-hook.ps1

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+<#
+Installs or restores a paho-mqtt3as proxy DLL into "C:\Program Files\reMarkable".
+Usage examples:
+  .\install-hook.ps1 -Action install
+  .\install-hook.ps1 -Action install -SourcePath "C:\some\path\my.dll"
+  .\install-hook.ps1 -Action restore
+#>
+
+param(
+    [ValidateSet("install","restore","help")]
+    [string]$Action = "help",
+
+    [string]$SourcePath = "",
+
+    [switch]$Force
+)
+
+$InstallDir   = "C:\Program Files\reMarkable"
+$TargetName   = "paho-mqtt3as.dll"
+$OrigName     = "paho-mqtt3as_orig.dll"
+$TargetPath   = Join-Path $InstallDir $TargetName
+$OrigPath     = Join-Path $InstallDir $OrigName
+
+$DefaultDebug   = "C:\Users\noham\Documents\paho-mqtt3as-proxy\x64\Debug\paho-mqtt3as-proxy.dll"
+$DefaultRelease = "C:\Users\noham\Documents\paho-mqtt3as-proxy\x64\Release\paho-mqtt3as-proxy.dll"
+
+function Show-Help {
+    "Actions:"
+    "  install    - rename existing paho-mqtt3as.dll -> paho-mqtt3as_orig.dll (if present) and copy proxy DLL into place."
+    "  restore    - remove proxy DLL (if present) and rename paho-mqtt3as_orig.dll back to paho-mqtt3as.dll."
+    ""
+    "Examples:"
+    "  .\install-hook.ps1 -Action install"
+    "  .\install-hook.ps1 -Action install -SourcePath `"$DefaultDebug`""
+    "  .\install-hook.ps1 -Action restore"
+}
+
+function Ensure-Admin {
+    $isAdmin = ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)
+
+    if (-not $isAdmin) {
+        Write-Host "Requesting administrator privileges..."
+
+        $args = @(
+            "-NoProfile",
+            "-ExecutionPolicy", "Bypass",
+            "-File", "`"$PSCommandPath`""
+        )
+
+        if ($MyInvocation.UnboundArguments -and $MyInvocation.UnboundArguments.Count -gt 0) {
+            $args += $MyInvocation.UnboundArguments
+        }
+
+        Start-Process -FilePath "powershell.exe" -Verb RunAs -ArgumentList $args
+
+        exit
+    }
+}
+
+function Install-Proxy {
+    Ensure-Admin
+
+    $resolvedSource = $SourcePath
+
+    if (-not $resolvedSource) {
+        if (Test-Path $DefaultDebug) {
+            $resolvedSource = $DefaultDebug
+        }
+        elseif (Test-Path $DefaultRelease) {
+            $resolvedSource = $DefaultRelease
+        }
+        else {
+            Write-Error "No source DLL supplied and none found in default Debug/Release paths."
+            exit 2
+        }
+    }
+
+    if (-not (Test-Path $resolvedSource)) {
+        Write-Error "Source DLL not found: $resolvedSource"
+        exit 3
+    }
+
+    if (-not (Test-Path $InstallDir)) {
+        Write-Error "Install directory not found: $InstallDir"
+        exit 4
+    }
+
+    if (-not (Test-Path $OrigPath) -and (Test-Path $TargetPath)) {
+        Move-Item $TargetPath $OrigPath -Force
+        Write-Host "Backed up original DLL"
+    }
+
+    Copy-Item $resolvedSource $TargetPath -Force
+
+    Write-Host ""
+    Write-Host "Hook installed successfully."
+}
+
+function Restore-Original {
+    Ensure-Admin
+
+    if (Test-Path $TargetPath) {
+        Remove-Item -Path $TargetPath -Force
+        Write-Host "Removed proxy DLL at $TargetPath"
+    } else {
+        Write-Host "No proxy DLL found at $TargetPath"
+    }
+
+    if (Test-Path $OrigPath) {
+        Move-Item -Path $OrigPath -Destination $TargetPath -Force
+        Write-Host "Restored original DLL: $OrigName -> $TargetName"
+    } else {
+        Write-Host "No backup original found at $OrigPath"
+    }
+}
+
+switch ($Action) {
+    "install" { Install-Proxy; break }
+    "restore" { Restore-Original; break }
+    "help"    { Show-Help; break }
+    default   { Show-Help; break }
+}