feat: implemented wrapper and pdf doc page

scripts/build_cpp.ps1

@@ -0,0 +1,38 @@
+$vcpkgRoot = $env:VCPKG_ROOT
+if (-not $vcpkgRoot) {
+    $vcpkgRoot = "C:\Users\furqa\vcpkg"
+    $env:VCPKG_ROOT = $vcpkgRoot
+    Write-Host "VCPKG_ROOT was not set. Defaulting to $vcpkgRoot" -ForegroundColor Yellow
+}
+
+$vcvars = "C:\Program Files (x86)\Microsoft Visual Studio\18\BuildTools\VC\Auxiliary\Build\vcvars64.bat"
+if (-not (Test-Path $vcvars)) {
+    $vcvars = "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvars64.bat"
+}
+
+if (-not (Test-Path $vcvars)) {
+    Write-Error "Could not find vcvars64.bat. Please ensure Visual Studio or Build Tools is installed."
+    exit 1
+}
+
+Write-Host "Loading MSVC environment variables using $vcvars..." -ForegroundColor Cyan
+cmd /c "`"$vcvars`" && set" | Where-Object { $_ -match '=' } | ForEach-Object {
+    $name, $value = $_ -split '=', 2
+    [System.Environment]::SetEnvironmentVariable($name, $value, 'Process')
+}
+
+Write-Host "Configuring CMake preset 'win-local-pdfium'..." -ForegroundColor Cyan
+cmake --preset win-local-pdfium
+if ($LASTEXITCODE -ne 0) {
+    Write-Error "CMake configuration failed."
+    exit $LASTEXITCODE
+}
+
+Write-Host "Building target 'pdfengine_py'..." -ForegroundColor Cyan
+cmake --build --preset win-local-pdfium --target pdfengine_py
+if ($LASTEXITCODE -ne 0) {
+    Write-Error "Build failed."
+    exit $LASTEXITCODE
+}
+
+Write-Host "Success! The python extension is compiled and copied to the gateway." -ForegroundColor Green

scripts/copy_test_corpus.ps1

@@ -0,0 +1,68 @@
+$sourceDir = "C:\Users\furqa\pdfium-build\checkout\pdfium\testing\resources"
+$destDir = "$PSScriptRoot\..\corpus"
+
+if (-not (Test-Path $sourceDir)) {
+    Write-Error "PDFium resources directory not found at: $sourceDir"
+    exit 1
+}
+
+$basic = @(
+    "about_blank.pdf",
+    "black.pdf",
+    "clip_path.pdf",
+    "dashed_lines.pdf",
+    "hello_world.pdf",
+    "hello_world_2_pages.pdf",
+    "many_rectangles.pdf",
+    "rectangles.pdf",
+    "rectangles_multi_pages.pdf",
+    "whitespace.pdf"
+)
+
+$fonts = @(
+    "latin_extended.pdf",
+    "rotated_text.pdf",
+    "rotated_text_90.pdf",
+    "text_font.pdf",
+    "utf-8.pdf",
+    "vertical_text.pdf",
+    "hebrew_mirrored.pdf"
+)
+
+$edgeCases = @(
+    "annots.pdf",
+    "bookmarks.pdf",
+    "combobox_form.pdf",
+    "embedded_attachments.pdf",
+    "empty_xref.pdf",
+    "encrypted.pdf",
+    "linearized.pdf",
+    "listbox_form.pdf",
+    "no_page_count.pdf",
+    "page_labels.pdf",
+    "text_form.pdf",
+    "unsupported_feature.pdf",
+    "zero_length_stream.pdf"
+)
+
+Write-Host "Ensuring corpus directory structure..."
+$null = New-Item -ItemType Directory -Force -Path "$destDir\basic"
+$null = New-Item -ItemType Directory -Force -Path "$destDir\fonts"
+$null = New-Item -ItemType Directory -Force -Path "$destDir\edge-cases"
+
+Write-Host "Copying basic files..."
+foreach ($f in $basic) {
+    Copy-Item "$sourceDir\$f" "$destDir\basic\$f" -Force
+}
+
+Write-Host "Copying font files..."
+foreach ($f in $fonts) {
+    Copy-Item "$sourceDir\$f" "$destDir\fonts\$f" -Force
+}
+
+Write-Host "Copying edge-case files..."
+foreach ($f in $edgeCases) {
+    Copy-Item "$sourceDir\$f" "$destDir\edge-cases\$f" -Force
+}
+
+Write-Host "Test corpus (30 files) populated successfully under $destDir"

scripts/start_gateway.ps1

@@ -0,0 +1,10 @@
+$scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
+$gatewayDir = Join-Path (Split-Path -Parent $scriptDir) "gateway"
+
+Write-Host "Starting FastAPI Gateway local dev server..." -ForegroundColor Cyan
+Push-Location $gatewayDir
+try {
+    & .venv\Scripts\uvicorn app.main:app --reload
+} finally {
+    Pop-Location
+}

scripts/test_cpp.ps1

@@ -0,0 +1,15 @@
+$vcvars = "C:\Program Files (x86)\Microsoft Visual Studio\18\BuildTools\VC\Auxiliary\Build\vcvars64.bat"
+if (-not (Test-Path $vcvars)) {
+    $vcvars = "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvars64.bat"
+}
+
+if (Test-Path $vcvars) {
+    cmd /c "`"$vcvars`" && set" | Where-Object { $_ -match '=' } | ForEach-Object {
+        $name, $value = $_ -split '=', 2
+        [System.Environment]::SetEnvironmentVariable($name, $value, 'Process')
+    }
+}
+
+Write-Host "Running C++ core unit tests..." -ForegroundColor Cyan
+ctest --preset win-local-pdfium
+exit $LASTEXITCODE

scripts/test_gateway.ps1

@@ -0,0 +1,10 @@
+$scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
+$gatewayDir = Join-Path (Split-Path -Parent $scriptDir) "gateway"
+
+Write-Host "Running FastAPI Gateway integration tests..." -ForegroundColor Cyan
+Push-Location $gatewayDir
+try {
+    & .venv\Scripts\pytest
+} finally {
+    Pop-Location
+}