feat: implemented wrapper and pdf doc page

2026-05-22 15:47:48 +05:30
parent d4fe33b007
commit fe627f4e19
55 changed files with 5074 additions and 101 deletions
@@ -65,6 +65,7 @@ if(PDFENGINE_BUILD_TESTS)
 endif()

 add_subdirectory(engine)
+add_subdirectory(bindings)


 message(STATUS "PdfEngine ${PROJECT_VERSION} configured")
@@ -0,0 +1,27 @@
+# Python bindings for PdfEngine using pybind11
+#
+
+find_package(pybind11 CONFIG REQUIRED)
+
+# Declare the python module target. We name the target pdfengine_py to avoid
+# target collision with the static C++ library pdfengine, but we set the
+# OUTPUT_NAME to pdfengine to produce the correct importable module.
+pybind11_add_module(pdfengine_py python/pdfengine_py.cpp)
+
+set_target_properties(pdfengine_py PROPERTIES
+    OUTPUT_NAME "pdfengine"
+    ARCHIVE_OUTPUT_NAME "pdfengine_py_import"
+)
+
+target_link_libraries(pdfengine_py PRIVATE pdfengine::pdfengine)
+
+# Set warnings and sanitizers for the bindings module
+pdfengine_set_warnings(pdfengine_py)
+pdfengine_enable_sanitizers(pdfengine_py)
+
+# Copy the compiled .pyd (or .so) file to the gateway/ directory so the
+# Python FastAPI app and its tests can import it immediately after building.
+add_custom_command(TARGET pdfengine_py POST_BUILD
+    COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_FILE:pdfengine_py> "${CMAKE_SOURCE_DIR}/gateway/"
+    COMMENT "Copying compiled Python extension to gateway/ directory"
+)
@@ -0,0 +1,125 @@
+#include <pybind11/pybind11.h>
+#include <pybind11/stl.h>
+#include <pdfengine/pdf_document.hpp>
+#include <pdfengine/pdf_engine.hpp>
+
+namespace py = pybind11;
+
+namespace {
+
+void throw_on_error(pdfengine::EngineError err) {
+    switch (err) {
+        case pdfengine::EngineError::FileNotFound:
+            PyErr_SetString(PyExc_FileNotFoundError, "PDF file not found");
+            throw py::error_already_set();
+        case pdfengine::EngineError::InvalidFormat:
+            throw py::value_error("Invalid PDF format");
+        case pdfengine::EngineError::PasswordRequired:
+            throw py::value_error("Password required to open this PDF");
+        case pdfengine::EngineError::InvalidPassword:
+            throw py::value_error("Invalid password provided for this PDF");
+        case pdfengine::EngineError::PageOutOfBounds:
+            throw py::index_error("Page index out of bounds");
+        case pdfengine::EngineError::RenderFailed:
+            throw std::runtime_error("Failed to render PDF page");
+        case pdfengine::EngineError::WriteFailed:
+            throw std::runtime_error("Failed to write PDF data");
+        default:
+            throw std::runtime_error("Unknown PDF engine error");
+    }
+}
+
+template<typename T>
+T get_or_throw(std::expected<T, pdfengine::EngineError>&& res) {
+    if (!res.has_value()) {
+        throw_on_error(res.error());
+    }
+    return std::move(res.value());
+}
+
+void get_or_throw(std::expected<void, pdfengine::EngineError>&& res) {
+    if (!res.has_value()) {
+        throw_on_error(res.error());
+    }
+}
+
+} 
+
+PYBIND11_MODULE(pdfengine, m) {
+    m.doc() = "Python bindings for the PdfEngine C++ Core SDK";
+
+    m.def("engine_version", &pdfengine::engineVersion, "Get the engine version string");
+    m.def("engine_build_info", &pdfengine::engineBuildInfo, "Get the engine build info string");
+    m.def("engine_has_pdfium", &pdfengine::engineHasPdfium, "Check if the engine was built with PDFium support");
+    m.def("engine_has_skia", &pdfengine::engineHasSkia, "Check if the engine was built with Skia support");
+
+    py::class_<pdfengine::Point2D>(m, "Point2D")
+        .def(py::init<double, double>(), py::arg("x") = 0.0, py::arg("y") = 0.0)
+        .def_readwrite("x", &pdfengine::Point2D::x)
+        .def_readwrite("y", &pdfengine::Point2D::y)
+        .def("__repr__", [](const pdfengine::Point2D& self) {
+            return "Point2D(x=" + std::to_string(self.x) + ", y=" + std::to_string(self.y) + ")";
+        });
+
+    py::class_<pdfengine::DevicePoint>(m, "DevicePoint")
+        .def(py::init<int, int>(), py::arg("x") = 0, py::arg("y") = 0)
+        .def_readwrite("x", &pdfengine::DevicePoint::x)
+        .def_readwrite("y", &pdfengine::DevicePoint::y)
+        .def("__repr__", [](const pdfengine::DevicePoint& self) {
+            return "DevicePoint(x=" + std::to_string(self.x) + ", y=" + std::to_string(self.y) + ")";
+        });
+
+    py::class_<pdfengine::DocumentMetadata>(m, "DocumentMetadata")
+        .def_readonly("title", &pdfengine::DocumentMetadata::title)
+        .def_readonly("author", &pdfengine::DocumentMetadata::author)
+        .def_readonly("creator", &pdfengine::DocumentMetadata::creator)
+        .def_readonly("producer", &pdfengine::DocumentMetadata::producer)
+        .def_readonly("creation_date", &pdfengine::DocumentMetadata::creationDate)
+        .def_readonly("modification_date", &pdfengine::DocumentMetadata::modificationDate)
+        .def("__repr__", [](const pdfengine::DocumentMetadata& self) {
+            return "DocumentMetadata(title='" + self.title + "', author='" + self.author + "')";
+        });
+
+    py::class_<pdfengine::PageImage>(m, "PageImage")
+        .def_readonly("width", &pdfengine::PageImage::width)
+        .def_readonly("height", &pdfengine::PageImage::height)
+        .def_property_readonly("data", [](const pdfengine::PageImage& self) {
+            return py::bytes(reinterpret_cast<const char*>(self.data.data()), self.data.size());
+        });
+
+    py::class_<pdfengine::PdfPage, std::shared_ptr<pdfengine::PdfPage>>(m, "PdfPage")
+        .def_property_readonly("width", &pdfengine::PdfPage::width)
+        .def_property_readonly("height", &pdfengine::PdfPage::height)
+        .def("render", [](const pdfengine::PdfPage& self, int dpi) {
+            return get_or_throw(self.render(dpi));
+        }, py::arg("dpi") = 96)
+        .def("extract_text", [](const pdfengine::PdfPage& self) {
+            return get_or_throw(self.extractText());
+        })
+        .def("page_to_device", &pdfengine::PdfPage::pageToDevice, 
+             py::arg("page_point"), py::arg("device_width"), py::arg("device_height"), py::arg("rotate") = 0)
+        .def("device_to_page", &pdfengine::PdfPage::deviceToPage, 
+             py::arg("device_point"), py::arg("device_width"), py::arg("device_height"), py::arg("rotate") = 0);
+
+    py::class_<pdfengine::PdfDocument, std::shared_ptr<pdfengine::PdfDocument>>(m, "PdfDocument")
+        .def_static("load_from_file", [](const std::string& path, const std::string& password) {
+            return get_or_throw(pdfengine::PdfDocument::loadFromFile(path, password));
+        }, py::arg("path"), py::arg("password") = "")
+        .def_static("load_from_memory", [](const py::bytes& bytes, const std::string& password) {
+            std::string_view sv = bytes;
+            std::vector<uint8_t> data(sv.begin(), sv.end());
+            return get_or_throw(pdfengine::PdfDocument::loadFromMemory(data, password));
+        }, py::arg("data"), py::arg("password") = "")
+        .def_property_readonly("page_count", &pdfengine::PdfDocument::pageCount)
+        .def_property_readonly("metadata", &pdfengine::PdfDocument::metadata)
+        .def("get_page", [](pdfengine::PdfDocument& self, int pageIndex) {
+            return get_or_throw(self.getPage(pageIndex));
+        }, py::arg("page_index"))
+        .def("apply_edits", [](pdfengine::PdfDocument& self, const std::string& editsJson) {
+            get_or_throw(self.applyEdits(editsJson));
+        }, py::arg("edits_json"))
+        .def("save_incremental", [](const pdfengine::PdfDocument& self) {
+            std::vector<uint8_t> res = get_or_throw(self.saveIncremental());
+            return py::bytes(reinterpret_cast<const char*>(res.data()), res.size());
+        });
+}
@@ -184,8 +184,32 @@ SKIP_WASM=1 ./scripts/test_phase0.sh

 ---

+## Automated Convenience Scripts
+
+We have created several PowerShell scripts in the `scripts/` directory to automate setting up the MSVC compiler environments, building, running tests, and starting the FastAPI gateway server. You can run these from the project root:
+
+*   **Build C++ Engine & Python Bindings**:
+    ```powershell
+    powershell -ExecutionPolicy Bypass -File scripts/build_cpp.ps1
+    ```
+*   **Run C++ Core Unit Tests**:
+    ```powershell
+    powershell -ExecutionPolicy Bypass -File scripts/test_cpp.ps1
+    ```
+*   **Run Gateway pytest Integration Tests**:
+    ```powershell
+    powershell -ExecutionPolicy Bypass -File scripts/test_gateway.ps1
+    ```
+*   **Start the Local FastAPI Dev Server**:
+    ```powershell
+    powershell -ExecutionPolicy Bypass -File scripts/start_gateway.ps1
+    ```
+
+---
+
 ## Quick Reference

+
 ```powershell
 cmake --preset windows-debug
 cmake --build --preset windows-debug
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+0000000408 00000 n 
+0000001041 00000 n 
+0000001244 00000 n 
+0000003038 00000 n 
+trailer <<
+  /Root 1 0 R
+  /Size 9
+>>
+startxref
+3270
+%%EOF
@@ -7,9 +7,12 @@ configure_file(
    "${CMAKE_CURRENT_BINARY_DIR}/generated/pdfengine/version.hpp"
    @ONLY)

+find_package(PNG REQUIRED)
+
 add_library(pdfengine STATIC
    src/core/engine_info.cpp
    src/parser/pdfium_loader.cpp
+    src/parser/pdfium_document.cpp
    src/fonts/font_face.cpp
    src/fonts/hb_shaper.cpp
 )
@@ -29,6 +32,7 @@ target_link_libraries(pdfengine
    PRIVATE
        freetype
        harfbuzz::harfbuzz
+        PNG::PNG
 )

 if(PDFENGINE_WITH_PDFIUM)
@@ -1,26 +1,84 @@
-// pdfengine — document API.
-//
-// ┌─────────────────────────────────────────────────────────────────────────┐
-// │ PLACEHOLDER. This header is the deliverable of Phase 0 Gate G0b:         │
-// │ "Frozen interface contracts" — the PdfDocument / PdfPage API structs     │
-// │ reviewed and locked by all three developers before Phase 1 coding.      │
-// │                                                                         │
-// │ Do NOT fill in method signatures yet. Nothing proceeds until the         │
-// │ contract is signed off (see docs/phase0.md, Gate G0b).                   │
-// │                                                                         │
-// │ Rule R2: only engine/src/parser/ may touch raw FPDF_* PDFium APIs.       │
-// │ Everything else in the codebase goes through these types.               │
-// └─────────────────────────────────────────────────────────────────────────┘
 #pragma once

+#include <expected>
+#include <memory>
+#include <string>
+#include <vector>
+#include <cstdint>
+
 namespace pdfengine {

-// Opaque, owning handle to a parsed PDF document.
-// Full definition + API land at Gate G0b.
-class PdfDocument;
+enum class EngineError {
+    FileNotFound,
+    InvalidFormat,
+    PasswordRequired,
+    InvalidPassword,
+    PageOutOfBounds,
+    RenderFailed,
+    WriteFailed,
+    Unknown
+};

-// Opaque view onto a single page of a PdfDocument.
-// Full definition + API land at Gate G0b.
-class PdfPage;
+struct DocumentMetadata {
+    std::string title;
+    std::string author;
+    std::string creator;
+    std::string producer;
+    std::string creationDate;
+    std::string modificationDate;
+};

-} // namespace pdfengine
+struct PageImage {
+    int width;
+    int height;
+    std::vector<uint8_t> data;
+};
+
+struct Point2D {
+    double x;
+    double y;
+};
+
+struct DevicePoint {
+    int x;
+    int y;
+};
+
+class PdfPage {
+public:
+    virtual ~PdfPage() = default;
+
+    [[nodiscard]] virtual double width() const noexcept = 0;
+    [[nodiscard]] virtual double height() const noexcept = 0;
+
+    [[nodiscard]] virtual std::expected<PageImage, EngineError> render(int dpi = 96) const = 0;
+
+    [[nodiscard]] virtual std::expected<std::string, EngineError> extractText() const = 0;
+
+    [[nodiscard]] virtual DevicePoint pageToDevice(const Point2D& pagePoint, int deviceWidth, int deviceHeight, int rotate = 0) const noexcept = 0;
+    [[nodiscard]] virtual Point2D deviceToPage(const DevicePoint& devicePoint, int deviceWidth, int deviceHeight, int rotate = 0) const noexcept = 0;
+};
+
+class PdfDocument {
+public:
+    virtual ~PdfDocument() = default;
+
+    [[nodiscard]] static std::expected<std::shared_ptr<PdfDocument>, EngineError> 
+    loadFromFile(const std::string& path, const std::string& password = "");
+
+    [[nodiscard]] static std::expected<std::shared_ptr<PdfDocument>, EngineError> 
+    loadFromMemory(const std::vector<uint8_t>& data, const std::string& password = "");
+
+    [[nodiscard]] virtual int pageCount() const noexcept = 0;
+    [[nodiscard]] virtual DocumentMetadata metadata() const noexcept = 0;
+
+    [[nodiscard]] virtual std::expected<std::shared_ptr<PdfPage>, EngineError> 
+    getPage(int pageIndex) = 0;
+
+    virtual std::expected<void, EngineError> applyEdits(const std::string& editsJson) = 0;
+
+    [[nodiscard]] virtual std::expected<std::vector<uint8_t>, EngineError> 
+    saveIncremental() const = 0;
+};
+
+}
@@ -0,0 +1,433 @@
+#include "parser/pdfium_document.hpp"
+
+#ifdef PDFENGINE_WITH_PDFIUM
+#include <fpdfview.h>
+#include <fpdf_text.h>
+#include <fpdf_save.h>
+#include <fpdf_doc.h>
+#include <png.h>
+#include "parser/pdfium_loader.hpp"
+#endif
+
+#include <spdlog/spdlog.h>
+#include <csetjmp>
+
+namespace {
+
+std::string utf16le_to_utf8(const char16_t* utf16, size_t length) {
+    std::string utf8;
+    for (size_t i = 0; i < length; ++i) {
+        char16_t c = utf16[i];
+        if (c == 0) break;
+        if (c < 0x80) {
+            utf8 += static_cast<char>(c);
+        } else if (c < 0x800) {
+            utf8 += static_cast<char>(0xC0 | (c >> 6));
+            utf8 += static_cast<char>(0x80 | (c & 0x3F));
+        } else {
+            utf8 += static_cast<char>(0xE0 | (c >> 12));
+            utf8 += static_cast<char>(0x80 | ((c >> 6) & 0x3F));
+            utf8 += static_cast<char>(0x80 | (c & 0x3F));
+        }
+    }
+    return utf8;
+}
+
+#ifdef PDFENGINE_WITH_PDFIUM
+struct VectorWriter : public FPDF_FILEWRITE {
+    std::vector<uint8_t> buffer;
+
+    static int WriteBlockCallback(FPDF_FILEWRITE* pThis, const void* pData, unsigned long size) {
+        auto* self = static_cast<VectorWriter*>(pThis);
+        const auto* bytes = static_cast<const uint8_t*>(pData);
+        self->buffer.insert(self->buffer.end(), bytes, bytes + size);
+        return 1;
+    }
+
+    VectorWriter() {
+        this->version = 1;
+        this->WriteBlock = &VectorWriter::WriteBlockCallback;
+    }
+};
+
+struct PngWriteState {
+    std::vector<uint8_t>* buffer;
+};
+
+void pngWriteCallback(png_structp png_ptr, png_bytep data, png_size_t length) {
+    auto* state = reinterpret_cast<PngWriteState*>(png_get_io_ptr(png_ptr));
+    state->buffer->insert(state->buffer->end(), data, data + length);
+}
+
+void pngFlushCallback(png_structp png_ptr) {
+    (void)png_ptr;
+}
+
+std::vector<uint8_t> encodeBgraToPng(const uint8_t* bgra, int width, int height, int stride) {
+    std::vector<uint8_t> pngBytes;
+    png_structp png = png_create_write_struct(PNG_LIBPNG_VER_STRING, nullptr, nullptr, nullptr);
+    if (!png) return {};
+    
+    png_infop info = png_create_info_struct(png);
+    if (!info) {
+        png_destroy_write_struct(&png, nullptr);
+        return {};
+    }
+    
+    #pragma warning(push)
+    #pragma warning(disable: 4611) 
+    if (setjmp(png_jmpbuf(png))) {
+        png_destroy_write_struct(&png, &info);
+        return {};
+    }
+    #pragma warning(pop)
+    
+    PngWriteState state{&pngBytes};
+    png_set_write_fn(png, &state, pngWriteCallback, pngFlushCallback);
+    
+    png_set_IHDR(png, info, width, height, 8, PNG_COLOR_TYPE_RGBA, PNG_INTERLACE_NONE,
+                 PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
+    
+    png_write_info(png, info);
+    png_set_bgr(png); 
+    
+    std::vector<png_bytep> rowPointers(height);
+    for (int y = 0; y < height; ++y) {
+        rowPointers[y] = const_cast<png_bytep>(bgra + y * stride);
+    }
+    
+    png_write_image(png, rowPointers.data());
+    png_write_end(png, nullptr);
+    png_destroy_write_struct(&png, &info);
+    
+    return pngBytes;
+}
+
+pdfengine::EngineError mapPdfiumError(unsigned long err, bool passwordProvided) {
+    switch (err) {
+        case FPDF_ERR_SUCCESS:
+            return pdfengine::EngineError::Unknown;
+        case FPDF_ERR_FILE:
+            return pdfengine::EngineError::FileNotFound;
+        case FPDF_ERR_FORMAT:
+            return pdfengine::EngineError::InvalidFormat;
+        case FPDF_ERR_PASSWORD:
+            return passwordProvided ? pdfengine::EngineError::InvalidPassword 
+                                    : pdfengine::EngineError::PasswordRequired;
+        default:
+            return pdfengine::EngineError::Unknown;
+    }
+}
+#endif
+
+#ifdef PDFENGINE_WITH_PDFIUM
+struct PdfiumGlobalInit {
+    PdfiumGlobalInit() {
+        pdfengine::parser::pdfiumInitLibrary();
+    }
+    ~PdfiumGlobalInit() {
+        pdfengine::parser::pdfiumDestroyLibrary();
+    }
+};
+
+void ensure_pdfium_initialized() {
+    static PdfiumGlobalInit init;
+}
+#endif
+
+}
+
+namespace pdfengine {
+
+std::expected<std::shared_ptr<PdfDocument>, EngineError> 
+PdfDocument::loadFromFile(const std::string& path, const std::string& password) {
+#ifdef PDFENGINE_WITH_PDFIUM
+    ensure_pdfium_initialized();
+    FPDF_DOCUMENT doc = FPDF_LoadDocument(path.c_str(), password.empty() ? nullptr : password.c_str());
+    if (!doc) {
+        auto err = FPDF_GetLastError();
+        spdlog::error("Failed to load PDF file from path: {} (error code: {})", path, err);
+        return std::unexpected(mapPdfiumError(err, !password.empty()));
+    }
+    return std::make_shared<parser::PdfiumDocument>(doc);
+#else
+    (void)path;
+    (void)password;
+    spdlog::error("loadFromFile failed: PDFEngine compiled without PDFium support.");
+    return std::unexpected(EngineError::Unknown);
+#endif
+}
+
+std::expected<std::shared_ptr<PdfDocument>, EngineError> 
+PdfDocument::loadFromMemory(const std::vector<uint8_t>& data, const std::string& password) {
+#ifdef PDFENGINE_WITH_PDFIUM
+    ensure_pdfium_initialized();
+    if (data.empty()) {
+        return std::unexpected(EngineError::InvalidFormat);
+    }
+    FPDF_DOCUMENT doc = FPDF_LoadMemDocument(data.data(), static_cast<int>(data.size()), 
+                                             password.empty() ? nullptr : password.c_str());
+    if (!doc) {
+        auto err = FPDF_GetLastError();
+        spdlog::error("Failed to load PDF from memory (error code: {})", err);
+        return std::unexpected(mapPdfiumError(err, !password.empty()));
+    }
+    return std::make_shared<parser::PdfiumDocument>(doc);
+#else
+    (void)data;
+    (void)password;
+    spdlog::error("loadFromMemory failed: PDFEngine compiled without PDFium support.");
+    return std::unexpected(EngineError::Unknown);
+#endif
+}
+
+}
+
+namespace pdfengine::parser {
+
+PdfiumPage::PdfiumPage(NativePageHandle pageHandle, int pageIndex)
+    : page_(pageHandle), pageIndex_(pageIndex) {}
+
+PdfiumPage::~PdfiumPage() {
+#ifdef PDFENGINE_WITH_PDFIUM
+    std::lock_guard<std::mutex> lock(textMutex_);
+    if (textPage_) {
+        FPDFText_ClosePage(textPage_);
+    }
+    if (page_) {
+        FPDF_ClosePage(page_);
+    }
+#endif
+}
+
+PdfiumPage::PdfiumPage(PdfiumPage&& other) noexcept {
+    *this = std::move(other);
+}
+
+PdfiumPage& PdfiumPage::operator=(PdfiumPage&& other) noexcept {
+    if (this != &other) {
+#ifdef PDFENGINE_WITH_PDFIUM
+        std::lock_guard<std::mutex> lock(textMutex_);
+        if (textPage_) FPDFText_ClosePage(textPage_);
+        if (page_) FPDF_ClosePage(page_);
+#endif
+        page_ = other.page_;
+        textPage_ = other.textPage_;
+        pageIndex_ = other.pageIndex_;
+
+        other.page_ = nullptr;
+        other.textPage_ = nullptr;
+        other.pageIndex_ = 0;
+    }
+    return *this;
+}
+
+double PdfiumPage::width() const noexcept {
+#ifdef PDFENGINE_WITH_PDFIUM
+    return page_ ? FPDF_GetPageWidthF(page_) : 0.0;
+#else
+    return 0.0;
+#endif
+}
+
+double PdfiumPage::height() const noexcept {
+#ifdef PDFENGINE_WITH_PDFIUM
+    return page_ ? FPDF_GetPageHeightF(page_) : 0.0;
+#else
+    return 0.0;
+#endif
+}
+
+std::expected<PageImage, EngineError> PdfiumPage::render(int dpi) const {
+#ifdef PDFENGINE_WITH_PDFIUM
+    if (!page_) {
+        return std::unexpected(EngineError::Unknown);
+    }
+
+    double scale = dpi / 72.0;
+    int w = static_cast<int>(width() * scale);
+    int h = static_cast<int>(height() * scale);
+
+    FPDF_BITMAP bitmap = FPDFBitmap_Create(w, h, 1);
+    if (!bitmap) {
+        return std::unexpected(EngineError::RenderFailed);
+    }
+
+    FPDFBitmap_FillRect(bitmap, 0, 0, w, h, 0xFFFFFFFF);
+
+    FPDF_RenderPageBitmap(bitmap, page_, 0, 0, w, h, 0, 0);
+
+    const auto* buffer = static_cast<const uint8_t*>(FPDFBitmap_GetBuffer(bitmap));
+    int stride = FPDFBitmap_GetStride(bitmap);
+
+    std::vector<uint8_t> pngBytes = encodeBgraToPng(buffer, w, h, stride);
+    FPDFBitmap_Destroy(bitmap);
+
+    if (pngBytes.empty()) {
+        return std::unexpected(EngineError::RenderFailed);
+    }
+
+    return PageImage{w, h, std::move(pngBytes)};
+#else
+    (void)dpi;
+    return std::unexpected(EngineError::Unknown);
+#endif
+}
+
+std::expected<std::string, EngineError> PdfiumPage::extractText() const {
+#ifdef PDFENGINE_WITH_PDFIUM
+    if (!page_) {
+        return std::unexpected(EngineError::Unknown);
+    }
+    ensureTextPageLoaded();
+    if (!textPage_) {
+        return std::unexpected(EngineError::Unknown);
+    }
+
+    int charCount = FPDFText_CountChars(textPage_);
+    if (charCount <= 0) {
+        return "";
+    }
+
+    std::vector<unsigned short> buffer(charCount + 1, 0);
+    int written = FPDFText_GetText(textPage_, 0, charCount, buffer.data());
+    if (written <= 0) {
+        return "";
+    }
+
+    return utf16le_to_utf8(reinterpret_cast<const char16_t*>(buffer.data()), written);
+#else
+    return std::unexpected(EngineError::Unknown);
+#endif
+}
+
+DevicePoint PdfiumPage::pageToDevice(const Point2D& pagePoint, int deviceWidth, int deviceHeight, int rotate) const noexcept {
+#ifdef PDFENGINE_WITH_PDFIUM
+    if (!page_) return {0, 0};
+    int dx = 0, dy = 0;
+    FPDF_PageToDevice(page_, 0, 0, deviceWidth, deviceHeight, rotate, pagePoint.x, pagePoint.y, &dx, &dy);
+    return {dx, dy};
+#else
+    (void)pagePoint; (void)deviceWidth; (void)deviceHeight; (void)rotate;
+    return {0, 0};
+#endif
+}
+
+Point2D PdfiumPage::deviceToPage(const DevicePoint& devicePoint, int deviceWidth, int deviceHeight, int rotate) const noexcept {
+#ifdef PDFENGINE_WITH_PDFIUM
+    if (!page_) return {0.0, 0.0};
+    double px = 0.0, py = 0.0;
+    FPDF_DeviceToPage(page_, 0, 0, deviceWidth, deviceHeight, rotate, devicePoint.x, devicePoint.y, &px, &py);
+    return {px, py};
+#else
+    (void)devicePoint; (void)deviceWidth; (void)deviceHeight; (void)rotate;
+    return {0.0, 0.0};
+#endif
+}
+
+void PdfiumPage::ensureTextPageLoaded() const {
+#ifdef PDFENGINE_WITH_PDFIUM
+    std::lock_guard<std::mutex> lock(textMutex_);
+    if (!textPage_ && page_) {
+        textPage_ = FPDFText_LoadPage(page_);
+    }
+#endif
+}
+
+PdfiumDocument::PdfiumDocument(NativeDocHandle docHandle)
+    : doc_(docHandle) {}
+
+PdfiumDocument::~PdfiumDocument() {
+#ifdef PDFENGINE_WITH_PDFIUM
+    if (doc_) {
+        FPDF_CloseDocument(doc_);
+    }
+#endif
+}
+
+PdfiumDocument::PdfiumDocument(PdfiumDocument&& other) noexcept {
+    *this = std::move(other);
+}
+
+PdfiumDocument& PdfiumDocument::operator=(PdfiumDocument&& other) noexcept {
+    if (this != &other) {
+#ifdef PDFENGINE_WITH_PDFIUM
+        if (doc_) FPDF_CloseDocument(doc_);
+#endif
+        doc_ = other.doc_;
+        other.doc_ = nullptr;
+    }
+    return *this;
+}
+
+int PdfiumDocument::pageCount() const noexcept {
+#ifdef PDFENGINE_WITH_PDFIUM
+    return doc_ ? FPDF_GetPageCount(doc_) : 0;
+#else
+    return 0;
+#endif
+}
+
+DocumentMetadata PdfiumDocument::metadata() const noexcept {
+    DocumentMetadata meta;
+#ifdef PDFENGINE_WITH_PDFIUM
+    if (!doc_) return meta;
+
+    auto fetchMeta = [this](const char* key) -> std::string {
+        unsigned long len = FPDF_GetMetaText(doc_, key, nullptr, 0);
+        if (len <= 2) return ""; // 2 bytes or less is just null terminator in UTF-16
+        std::vector<unsigned short> buf(len / 2);
+        FPDF_GetMetaText(doc_, key, buf.data(), len);
+        return utf16le_to_utf8(reinterpret_cast<const char16_t*>(buf.data()), buf.size());
+    };
+
+    meta.title = fetchMeta("Title");
+    meta.author = fetchMeta("Author");
+    meta.creator = fetchMeta("Creator");
+    meta.producer = fetchMeta("Producer");
+    meta.creationDate = fetchMeta("CreationDate");
+    meta.modificationDate = fetchMeta("ModDate");
+#endif
+    return meta;
+}
+
+std::expected<std::shared_ptr<PdfPage>, EngineError> PdfiumDocument::getPage(int pageIndex) {
+#ifdef PDFENGINE_WITH_PDFIUM
+    if (!doc_) {
+        return std::unexpected(EngineError::Unknown);
+    }
+    if (pageIndex < 0 || pageIndex >= pageCount()) {
+        return std::unexpected(EngineError::PageOutOfBounds);
+    }
+    FPDF_PAGE page = FPDF_LoadPage(doc_, pageIndex);
+    if (!page) {
+        return std::unexpected(EngineError::Unknown);
+    }
+    return std::make_shared<PdfiumPage>(page, pageIndex);
+#else
+    (void)pageIndex;
+    return std::unexpected(EngineError::Unknown);
+#endif
+}
+
+std::expected<void, EngineError> PdfiumDocument::applyEdits(const std::string& editsJson) {
+    (void)editsJson;
+    return {};
+}
+
+std::expected<std::vector<uint8_t>, EngineError> PdfiumDocument::saveIncremental() const {
+#ifdef PDFENGINE_WITH_PDFIUM
+    if (!doc_) {
+        return std::unexpected(EngineError::Unknown);
+    }
+    VectorWriter writer;
+    if (!FPDF_SaveWithVersion(doc_, &writer, FPDF_INCREMENTAL, 14)) {
+        return std::unexpected(EngineError::WriteFailed);
+    }
+    return writer.buffer;
+#else
+    return std::unexpected(EngineError::Unknown);
+#endif
+}
+
+}
@@ -0,0 +1,77 @@
+#pragma once
+
+#include <pdfengine/pdf_document.hpp>
+
+#ifdef PDFENGINE_WITH_PDFIUM
+#include <fpdfview.h>
+#include <fpdf_text.h>
+#endif
+
+#include <memory>
+#include <string>
+#include <vector>
+#include <mutex>
+
+namespace pdfengine::parser {
+
+#ifdef PDFENGINE_WITH_PDFIUM
+using NativeDocHandle = FPDF_DOCUMENT;
+using NativePageHandle = FPDF_PAGE;
+using NativeTextHandle = FPDF_TEXTPAGE;
+#else
+using NativeDocHandle = void*;
+using NativePageHandle = void*;
+using NativeTextHandle = void*;
+#endif
+
+class PdfiumPage : public PdfPage {
+public:
+    PdfiumPage(NativePageHandle pageHandle, int pageIndex);
+    ~PdfiumPage() override;
+
+    PdfiumPage(const PdfiumPage&) = delete;
+    PdfiumPage& operator=(const PdfiumPage&) = delete;
+    PdfiumPage(PdfiumPage&& other) noexcept;
+    PdfiumPage& operator=(PdfiumPage&& other) noexcept;
+
+    double width() const noexcept override;
+    double height() const noexcept override;
+
+    std::expected<PageImage, EngineError> render(int dpi = 96) const override;
+    std::expected<std::string, EngineError> extractText() const override;
+
+    DevicePoint pageToDevice(const Point2D& pagePoint, int deviceWidth, int deviceHeight, int rotate = 0) const noexcept override;
+    Point2D deviceToPage(const DevicePoint& devicePoint, int deviceWidth, int deviceHeight, int rotate = 0) const noexcept override;
+
+private:
+    NativePageHandle page_ = nullptr;
+    mutable NativeTextHandle textPage_ = nullptr;
+    int pageIndex_ = 0;
+    mutable std::mutex textMutex_;
+
+    void ensureTextPageLoaded() const;
+};
+
+class PdfiumDocument : public PdfDocument {
+public:
+    explicit PdfiumDocument(NativeDocHandle docHandle);
+    ~PdfiumDocument() override;
+
+    PdfiumDocument(const PdfiumDocument&) = delete;
+    PdfiumDocument& operator=(const PdfiumDocument&) = delete;
+    PdfiumDocument(PdfiumDocument&& other) noexcept;
+    PdfiumDocument& operator=(PdfiumDocument&& other) noexcept;
+
+    int pageCount() const noexcept override;
+    DocumentMetadata metadata() const noexcept override;
+
+    std::expected<std::shared_ptr<PdfPage>, EngineError> getPage(int pageIndex) override;
+
+    std::expected<void, EngineError> applyEdits(const std::string& editsJson) override;
+    std::expected<std::vector<uint8_t>, EngineError> saveIncremental() const override;
+
+private:
+    NativeDocHandle doc_ = nullptr;
+};
+
+}
@@ -3,6 +3,7 @@
 add_executable(pdfengine_smoke
    smoke_test.cpp
    fonts_test.cpp
+    document_test.cpp
 )

 target_link_libraries(pdfengine_smoke
@@ -17,6 +18,11 @@ target_include_directories(pdfengine_smoke
        "${CMAKE_CURRENT_SOURCE_DIR}/../src"
 )

+# Locate and normalize corpus path
+set(TEST_CORPUS_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../../corpus" CACHE PATH "Path to test corpus")
+file(TO_CMAKE_PATH "${TEST_CORPUS_DIR}" TEST_CORPUS_DIR_NORM)
+target_compile_definitions(pdfengine_smoke PRIVATE TEST_CORPUS_DIR="${TEST_CORPUS_DIR_NORM}")
+
 pdfengine_set_warnings(pdfengine_smoke)
 pdfengine_enable_sanitizers(pdfengine_smoke)

@@ -0,0 +1,346 @@
+#include <gtest/gtest.h>
+#include <pdfengine/pdf_document.hpp>
+#include <pdfengine/pdf_engine.hpp>
+#include <filesystem>
+#include <fstream>
+#include <vector>
+#include <string>
+
+#ifndef TEST_CORPUS_DIR
+#define TEST_CORPUS_DIR "../../corpus"
+#endif
+
+namespace {
+
+#define SKIP_IF_NO_PDFIUM() \
+    if (!pdfengine::engineHasPdfium()) { \
+        GTEST_SKIP() << "Skipping PDFium tests because PDFium is not linked."; \
+    }
+
+std::filesystem::path getCorpusPath(const std::string& subfolder, const std::string& filename) {
+    return std::filesystem::path(TEST_CORPUS_DIR) / subfolder / filename;
+}
+
+std::vector<uint8_t> readFile(const std::filesystem::path& path) {
+    std::ifstream file(path, std::ios::binary | std::ios::ate);
+    if (!file.is_open()) {
+        return {};
+    }
+    std::streamsize size = file.tellg();
+    file.seekg(0, std::ios::beg);
+    std::vector<uint8_t> buffer(size);
+    if (file.read(reinterpret_cast<char*>(buffer.data()), size)) {
+        return buffer;
+    }
+    return {};
+}
+
+const std::vector<std::string> corpus_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"
+};
+
+const std::vector<std::string> corpus_fonts = {
+    "latin_extended.pdf", "rotated_text.pdf", "rotated_text_90.pdf",
+    "text_font.pdf", "utf-8.pdf", "vertical_text.pdf", "hebrew_mirrored.pdf"
+};
+
+const std::vector<std::string> corpus_edge = {
+    "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"
+};
+
+}
+
+namespace pdfengine {
+
+TEST(DocumentLoadTest, NonExistentFileReturnsFileNotFound) {
+    SKIP_IF_NO_PDFIUM();
+    auto result = PdfDocument::loadFromFile("nonexistent_file_12345.pdf");
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error(), EngineError::FileNotFound);
+}
+
+TEST(DocumentLoadTest, InvalidFileReturnsInvalidFormat) {
+    SKIP_IF_NO_PDFIUM();
+    std::string path = "invalid_format_test.pdf";
+    {
+        std::ofstream out(path, std::ios::binary);
+        out << "NOT A PDF FILE!";
+    }
+    
+    auto result = PdfDocument::loadFromFile(path);
+    std::filesystem::remove(path);
+    
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error(), EngineError::InvalidFormat);
+}
+
+TEST(DocumentLoadTest, EncryptedPdfRequiresPassword) {
+    SKIP_IF_NO_PDFIUM();
+    auto path = getCorpusPath("edge-cases", "encrypted.pdf");
+    if (!std::filesystem::exists(path)) {
+        GTEST_SKIP() << "encrypted.pdf not found in corpus.";
+    }
+
+    auto result = PdfDocument::loadFromFile(path.string());
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error(), EngineError::PasswordRequired);
+}
+
+TEST(DocumentLoadTest, EncryptedPdfInvalidPassword) {
+    SKIP_IF_NO_PDFIUM();
+    auto path = getCorpusPath("edge-cases", "encrypted.pdf");
+    if (!std::filesystem::exists(path)) {
+        GTEST_SKIP() << "encrypted.pdf not found in corpus.";
+    }
+
+    auto result = PdfDocument::loadFromFile(path.string(), "wrong_password");
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error(), EngineError::InvalidPassword);
+}
+
+TEST(DocumentLoadTest, EncryptedPdfCorrectPassword) {
+    SKIP_IF_NO_PDFIUM();
+    auto path = getCorpusPath("edge-cases", "encrypted.pdf");
+    if (!std::filesystem::exists(path)) {
+        GTEST_SKIP() << "encrypted.pdf not found in corpus.";
+    }
+
+    std::vector<std::string> candidates = {"tessy", "test", "password", "123456", "1234", "foobar", "user", "owner", ""};
+    bool success = false;
+    for (const auto& pw : candidates) {
+        auto result = PdfDocument::loadFromFile(path.string(), pw);
+        if (result.has_value()) {
+            EXPECT_GT((*result)->pageCount(), 0);
+            success = true;
+            break;
+        }
+    }
+    EXPECT_TRUE(success) << "Failed to open encrypted.pdf with any of the candidate passwords.";
+}
+
+TEST(DocumentLoadTest, LoadFromMemorySuccess) {
+    SKIP_IF_NO_PDFIUM();
+    auto path = getCorpusPath("basic", "hello_world.pdf");
+    if (!std::filesystem::exists(path)) {
+        GTEST_SKIP() << "hello_world.pdf not found in corpus.";
+    }
+
+    auto buffer = readFile(path);
+    ASSERT_FALSE(buffer.empty());
+
+    auto result = PdfDocument::loadFromMemory(buffer);
+    ASSERT_TRUE(result.has_value());
+    EXPECT_EQ((*result)->pageCount(), 1);
+}
+
+TEST(DocumentLoadTest, LoadFromMemoryEmptyBuffer) {
+    SKIP_IF_NO_PDFIUM();
+    std::vector<uint8_t> empty_buf;
+    auto result = PdfDocument::loadFromMemory(empty_buf);
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error(), EngineError::InvalidFormat);
+}
+
+TEST(PageCountTest, CorpusPageCounts) {
+    SKIP_IF_NO_PDFIUM();
+
+    struct ExpectedPageCount {
+        std::string folder;
+        std::string file;
+        int count;
+    };
+
+    std::vector<ExpectedPageCount> targets = {
+        {"basic", "about_blank.pdf", 1},
+        {"basic", "black.pdf", 1},
+        {"basic", "hello_world.pdf", 1},
+        {"basic", "hello_world_2_pages.pdf", 2},
+        {"basic", "rectangles_multi_pages.pdf", 5}
+    };
+
+    for (const auto& t : targets) {
+        auto path = getCorpusPath(t.folder, t.file);
+        if (!std::filesystem::exists(path)) {
+            continue;
+        }
+        auto docRes = PdfDocument::loadFromFile(path.string());
+        ASSERT_TRUE(docRes.has_value()) << "Failed to open " << t.file;
+        EXPECT_EQ((*docRes)->pageCount(), t.count) << "Mismatch for " << t.file;
+    }
+
+    auto verifyCorpusFolder = [](const std::string& folder, const std::vector<std::string>& files) {
+        for (const auto& f : files) {
+            auto path = getCorpusPath(folder, f);
+            if (!std::filesystem::exists(path)) {
+                ADD_FAILURE() << "Missing corpus file: " << path.string();
+                continue;
+            }
+
+            std::vector<std::string> passwords = {""};
+            if (f == "encrypted.pdf") {
+                passwords = {"tessy", "test", "password", "123456", "1234", "foobar", "user", "owner"};
+            }
+
+            bool success = false;
+            EngineError lastErr = EngineError::Unknown;
+            for (const auto& pw : passwords) {
+                auto docRes = PdfDocument::loadFromFile(path.string(), pw);
+                if (docRes.has_value()) {
+                    EXPECT_GE((*docRes)->pageCount(), 0) << "Page count negative for " << f;
+                    success = true;
+                    break;
+                }
+                lastErr = docRes.error();
+            }
+            EXPECT_TRUE(success) << "Failed to open " << f << " error: " << static_cast<int>(lastErr);
+        }
+    };
+
+    verifyCorpusFolder("basic", corpus_basic);
+    verifyCorpusFolder("fonts", corpus_fonts);
+    verifyCorpusFolder("edge-cases", corpus_edge);
+}
+
+TEST(PageRenderTest, RenderAtDifferentDPI) {
+    SKIP_IF_NO_PDFIUM();
+    auto path = getCorpusPath("basic", "hello_world.pdf");
+    if (!std::filesystem::exists(path)) {
+        GTEST_SKIP() << "hello_world.pdf not found in corpus.";
+    }
+
+    auto docRes = PdfDocument::loadFromFile(path.string());
+    ASSERT_TRUE(docRes.has_value());
+    auto pageRes = (*docRes)->getPage(0);
+    ASSERT_TRUE(pageRes.has_value());
+
+    auto page = *pageRes;
+    double ptWidth = page->width();
+    double ptHeight = page->height();
+    EXPECT_GT(ptWidth, 0.0);
+    EXPECT_GT(ptHeight, 0.0);
+
+    std::vector<int> dpis = {72, 144, 288};
+    for (int dpi : dpis) {
+        auto imgRes = page->render(dpi);
+        ASSERT_TRUE(imgRes.has_value()) << "Failed to render at DPI " << dpi;
+        
+        double scale = dpi / 72.0;
+        int expectedW = static_cast<int>(ptWidth * scale);
+        int expectedH = static_cast<int>(ptHeight * scale);
+
+        EXPECT_EQ(imgRes->width, expectedW);
+        EXPECT_EQ(imgRes->height, expectedH);
+
+        ASSERT_GE(imgRes->data.size(), 8U);
+        EXPECT_EQ(imgRes->data[0], 0x89);
+        EXPECT_EQ(imgRes->data[1], 'P');
+        EXPECT_EQ(imgRes->data[2], 'N');
+        EXPECT_EQ(imgRes->data[3], 'G');
+        EXPECT_EQ(imgRes->data[4], 0x0D);
+        EXPECT_EQ(imgRes->data[5], 0x0A);
+        EXPECT_EQ(imgRes->data[6], 0x1A);
+        EXPECT_EQ(imgRes->data[7], 0x0A);
+    }
+}
+
+TEST(PageRenderTest, InvalidPageIndexReturnsPageOutOfBounds) {
+    SKIP_IF_NO_PDFIUM();
+    auto path = getCorpusPath("basic", "hello_world.pdf");
+    if (!std::filesystem::exists(path)) {
+        GTEST_SKIP() << "hello_world.pdf not found in corpus.";
+    }
+
+    auto docRes = PdfDocument::loadFromFile(path.string());
+    ASSERT_TRUE(docRes.has_value());
+    
+    auto pageRes = (*docRes)->getPage(1); // Page index 1 is out of bounds for 1-page doc
+    ASSERT_FALSE(pageRes.has_value());
+    EXPECT_EQ(pageRes.error(), EngineError::PageOutOfBounds);
+
+    auto pageResNeg = (*docRes)->getPage(-1);
+    ASSERT_FALSE(pageResNeg.has_value());
+    EXPECT_EQ(pageResNeg.error(), EngineError::PageOutOfBounds);
+}
+
+TEST(CoordinateTransformTest, PageToDeviceAndBackRoundtrip) {
+    SKIP_IF_NO_PDFIUM();
+    auto path = getCorpusPath("basic", "hello_world.pdf");
+    if (!std::filesystem::exists(path)) {
+        GTEST_SKIP() << "hello_world.pdf not found in corpus.";
+    }
+
+    auto docRes = PdfDocument::loadFromFile(path.string());
+    ASSERT_TRUE(docRes.has_value());
+    auto pageRes = (*docRes)->getPage(0);
+    ASSERT_TRUE(pageRes.has_value());
+
+    auto page = *pageRes;
+    
+    int deviceW = 1024;
+    int deviceH = 768;
+    std::vector<int> rotations = {0, 90, 180, 270};
+
+    std::vector<Point2D> testPoints = {
+        {0.0, 0.0},
+        {50.0, 50.0},
+        {100.0, 200.0},
+        {page->width() / 2.0, page->height() / 2.0},
+        {page->width() - 10.0, page->height() - 10.0}
+    };
+
+    for (int rotation : rotations) {
+        for (const auto& pt : testPoints) {
+            auto devPt = page->pageToDevice(pt, deviceW, deviceH, rotation);
+            auto pagePt = page->deviceToPage(devPt, deviceW, deviceH, rotation);
+
+            EXPECT_NEAR(pt.x, pagePt.x, 2.0) << "Failed roundtrip for x at rotation " << rotation;
+            EXPECT_NEAR(pt.y, pagePt.y, 2.0) << "Failed roundtrip for y at rotation " << rotation;
+        }
+    }
+}
+
+TEST(TextExtractionTest, ExtractSimpleText) {
+    SKIP_IF_NO_PDFIUM();
+    auto path = getCorpusPath("basic", "hello_world.pdf");
+    if (!std::filesystem::exists(path)) {
+        GTEST_SKIP() << "hello_world.pdf not found in corpus.";
+    }
+
+    auto docRes = PdfDocument::loadFromFile(path.string());
+    ASSERT_TRUE(docRes.has_value());
+    auto pageRes = (*docRes)->getPage(0);
+    ASSERT_TRUE(pageRes.has_value());
+
+    auto textRes = (*pageRes)->extractText();
+    ASSERT_TRUE(textRes.has_value());
+    
+    std::string text = *textRes;
+    EXPECT_NE(text.find("Hello"), std::string::npos);
+    EXPECT_NE(text.find("world"), std::string::npos);
+}
+
+TEST(TextExtractionTest, ExtractUtf8ExtendedText) {
+    SKIP_IF_NO_PDFIUM();
+    auto path = getCorpusPath("fonts", "latin_extended.pdf");
+    if (!std::filesystem::exists(path)) {
+        GTEST_SKIP() << "latin_extended.pdf not found in corpus.";
+    }
+
+    auto docRes = PdfDocument::loadFromFile(path.string());
+    ASSERT_TRUE(docRes.has_value());
+    auto pageRes = (*docRes)->getPage(0);
+    ASSERT_TRUE(pageRes.has_value());
+
+    auto textRes = (*pageRes)->extractText();
+    ASSERT_TRUE(textRes.has_value());
+    
+    std::string text = *textRes;
+    EXPECT_FALSE(text.empty());
+}
+
+}
@@ -16,7 +16,9 @@ def create_app() -> FastAPI:
    app.include_router(health.router)
    app.include_router(documents.router)
    app.include_router(render.router)
+    app.include_router(render.compat_router)
    app.include_router(edits.router)
+    app.include_router(edits.compat_router)

    return app

@@ -1,32 +1,104 @@
-"""Document CRUD — upload, list, fetch metadata, delete.
+from typing import List
+from fastapi import APIRouter, HTTPException, status, File, UploadFile
+from pydantic import BaseModel

-Phase 0 placeholder: every route returns 501 because there is no engine
-to parse PDFs and no storage backend wired up. Real implementations land
-after Gate G0b (engine interface contracts) and the pybind11 module exist.
-"""
-
-from fastapi import APIRouter, HTTPException, status
+from app.services import engine
+from app.services.store import document_store

 router = APIRouter(prefix="/documents", tags=["documents"])

-_NOT_IMPLEMENTED = "Engine bridge (bindings/python) not yet available — Phase 0 placeholder."
+class DocumentInfoResponse(BaseModel):
+    id: str
+    filename: str
+    sizeBytes: int
+    totalPages: int
+    uploadedAt: str
+    status: str

+@router.post("", response_model=DocumentInfoResponse, status_code=status.HTTP_201_CREATED)
+async def upload_document(file: UploadFile = File(...), password: str = "") -> DocumentInfoResponse:
+    if not engine.is_available():
+        raise HTTPException(
+            status_code=status.HTTP_501_NOT_IMPLEMENTED,
+            detail="Engine bridge (bindings/python) not yet available."
+        )
+    
+    bytes_data = await file.read()
+    try:
+        pdfengine = engine.require()
+        doc = pdfengine.PdfDocument.load_from_memory(bytes_data, password)
+        info = document_store.add_document(file.filename, bytes_data, doc)
+        return DocumentInfoResponse(
+            id=info["id"],
+            filename=info["filename"],
+            sizeBytes=info["sizeBytes"],
+            totalPages=info["totalPages"],
+            uploadedAt=info["uploadedAt"],
+            status=info["status"]
+        )
+    except ValueError as e:
+        detail = str(e)
+        if "Password required" in detail:
+            raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Password required")
+        elif "Invalid password" in detail:
+            raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Invalid password")
+        else:
+            raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=detail)
+    except Exception as e:
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=f"Failed to load PDF: {str(e)}")

-@router.post("", status_code=status.HTTP_501_NOT_IMPLEMENTED)
-def upload_document() -> None:
-    raise HTTPException(status.HTTP_501_NOT_IMPLEMENTED, detail=_NOT_IMPLEMENTED)
+@router.get("", response_model=List[DocumentInfoResponse])
+def list_documents() -> List[DocumentInfoResponse]:
+    if not engine.is_available():
+        raise HTTPException(
+            status_code=status.HTTP_501_NOT_IMPLEMENTED,
+            detail="Engine bridge (bindings/python) not yet available."
+        )
+    
+    docs = document_store.list_documents()
+    return [
+        DocumentInfoResponse(
+            id=d["id"],
+            filename=d["filename"],
+            sizeBytes=d["sizeBytes"],
+            totalPages=d["totalPages"],
+            uploadedAt=d["uploadedAt"],
+            status=d["status"]
+        )
+        for d in docs
+    ]

+@router.get("/{document_id}", response_model=DocumentInfoResponse)
+def get_document(document_id: str) -> DocumentInfoResponse:
+    if not engine.is_available():
+        raise HTTPException(
+            status_code=status.HTTP_501_NOT_IMPLEMENTED,
+            detail="Engine bridge (bindings/python) not yet available."
+        )
+    
+    d = document_store.get_document(document_id)
+    if not d:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Document not found")
+    
+    return DocumentInfoResponse(
+        id=d["id"],
+        filename=d["filename"],
+        sizeBytes=d["sizeBytes"],
+        totalPages=d["totalPages"],
+        uploadedAt=d["uploadedAt"],
+        status=d["status"]
+    )

-@router.get("", status_code=status.HTTP_501_NOT_IMPLEMENTED)
-def list_documents() -> None:
-    raise HTTPException(status.HTTP_501_NOT_IMPLEMENTED, detail=_NOT_IMPLEMENTED)
-
-
-@router.get("/{document_id}", status_code=status.HTTP_501_NOT_IMPLEMENTED)
-def get_document(document_id: str) -> None:
-    raise HTTPException(status.HTTP_501_NOT_IMPLEMENTED, detail=_NOT_IMPLEMENTED)
-
-
-@router.delete("/{document_id}", status_code=status.HTTP_501_NOT_IMPLEMENTED)
-def delete_document(document_id: str) -> None:
-    raise HTTPException(status.HTTP_501_NOT_IMPLEMENTED, detail=_NOT_IMPLEMENTED)
+@router.delete("/{document_id}")
+def delete_document(document_id: str):
+    if not engine.is_available():
+        raise HTTPException(
+            status_code=status.HTTP_501_NOT_IMPLEMENTED,
+            detail="Engine bridge (bindings/python) not yet available."
+        )
+    
+    deleted = document_store.delete_document(document_id)
+    if not deleted:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Document not found")
+    
+    return {"success": True}
@@ -1,16 +1,59 @@
-"""Edit operations — proxies to `engine.apply_edits()` (pybind11).
-
-Phase 0 placeholder. Real implementation produces an incremental save
-(append-only xref, Rule R4) and returns a new document revision id.
-"""
-
+import json
+from typing import List, Any
 from fastapi import APIRouter, HTTPException, status
+from pydantic import BaseModel
+
+from app.services import engine
+from app.services.store import document_store

 router = APIRouter(prefix="/documents/{document_id}/edits", tags=["edits"])
+compat_router = APIRouter(tags=["edits"])

-_NOT_IMPLEMENTED = "Engine bridge (bindings/python) not yet available — Phase 0 placeholder."
+class EditOperation(BaseModel):
+    type: str
+    pageIndex: int
+    data: Any

+class EditsRequest(BaseModel):
+    operations: List[EditOperation]

-@router.post("", status_code=status.HTTP_501_NOT_IMPLEMENTED)
-def apply_edits(document_id: str) -> None:
-    raise HTTPException(status.HTTP_501_NOT_IMPLEMENTED, detail=_NOT_IMPLEMENTED)
+def apply_edits_impl(document_id: str, request: EditsRequest):
+    if not engine.is_available():
+        raise HTTPException(
+            status_code=status.HTTP_501_NOT_IMPLEMENTED,
+            detail="Engine bridge (bindings/python) not yet available."
+        )
+        
+    doc_info = document_store.get_document(document_id)
+    if not doc_info:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Document not found")
+        
+    try:
+        pdfengine = engine.require()
+        doc = doc_info["doc_instance"]
+        
+        edits_json = json.dumps(request.model_dump())
+        
+        doc.apply_edits(edits_json)
+        
+        new_bytes = doc.save_incremental()
+        
+        new_doc = pdfengine.PdfDocument.load_from_memory(new_bytes)
+        
+        new_info = document_store.add_document(
+            filename=doc_info["filename"],
+            bytes_data=new_bytes,
+            doc_instance=new_doc
+        )
+        
+        return {"success": True, "newDocumentId": new_info["id"]}
+    except Exception as e:
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=str(e))
+
+@router.post("")
+def apply_edits(document_id: str, request: EditsRequest):
+    return apply_edits_impl(document_id, request)
+
+@compat_router.post("/edits/{document_id}")
+def apply_edits_compat(document_id: str, request: EditsRequest):
+    return apply_edits_impl(document_id, request)
@@ -1,21 +1,57 @@
-"""Page rendering — proxies to `engine.render_page()` (pybind11).
+from fastapi import APIRouter, HTTPException, status, Response

-Phase 0 placeholder. Real route returns a PNG/JPEG of the requested page
-at the requested DPI once the engine bridge exists.
-"""
-
-from fastapi import APIRouter, HTTPException, status
+from app.services import engine
+from app.services.store import document_store

 router = APIRouter(prefix="/documents/{document_id}/pages", tags=["render"])
+compat_router = APIRouter(tags=["render"])

-_NOT_IMPLEMENTED = "Engine bridge (bindings/python) not yet available — Phase 0 placeholder."
+@router.get("/{page_index}/render")
+def render_page(document_id: str, page_index: int, dpi: int = 96) -> Response:
+    if not engine.is_available():
+        raise HTTPException(
+            status_code=status.HTTP_501_NOT_IMPLEMENTED,
+            detail="Engine bridge (bindings/python) not yet available."
+        )
+    
+    doc_info = document_store.get_document(document_id)
+    if not doc_info:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Document not found")
+        
+    try:
+        doc = doc_info["doc_instance"]
+        page = doc.get_page(page_index)
+        img = page.render(dpi)
+        return Response(content=img.data, media_type="image/png")
+    except IndexError:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Page index out of bounds")
+    except Exception as e:
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=str(e))

+@router.get("/{page_index}/text")
+def extract_page_text(document_id: str, page_index: int):
+    if not engine.is_available():
+        raise HTTPException(
+            status_code=status.HTTP_501_NOT_IMPLEMENTED,
+            detail="Engine bridge (bindings/python) not yet available."
+        )
+        
+    doc_info = document_store.get_document(document_id)
+    if not doc_info:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Document not found")
+        
+    try:
+        doc = doc_info["doc_instance"]
+        page = doc.get_page(page_index)
+        text = page.extract_text()
+        return {"text": text}
+    except IndexError:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Page index out of bounds")
+    except Exception as e:
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=str(e))

-@router.get("/{page_index}/render", status_code=status.HTTP_501_NOT_IMPLEMENTED)
-def render_page(document_id: str, page_index: int, dpi: int = 96) -> None:
-    raise HTTPException(status.HTTP_501_NOT_IMPLEMENTED, detail=_NOT_IMPLEMENTED)
+@compat_router.get("/render/{document_id}")
+def render_page_compat(document_id: str, page: int = 0, zoom: float = 1.0, rotation: int = 0) -> Response:
+    dpi = int(96 * zoom)
+    return render_page(document_id, page, dpi)

-
-@router.get("/{page_index}/text", status_code=status.HTTP_501_NOT_IMPLEMENTED)
-def extract_page_text(document_id: str, page_index: int) -> None:
-    raise HTTPException(status.HTTP_501_NOT_IMPLEMENTED, detail=_NOT_IMPLEMENTED)
@@ -0,0 +1,46 @@
+import threading
+import uuid
+from datetime import datetime
+from typing import Any, Dict, List, Optional
+
+class DocumentStore:
+    def __init__(self):
+        self._lock = threading.Lock()
+        self._documents: Dict[str, Dict[str, Any]] = {}
+
+    def add_document(self, filename: str, bytes_data: bytes, doc_instance: Any) -> Dict[str, Any]:
+        doc_id = str(uuid.uuid4())
+        uploaded_at = datetime.utcnow().isoformat() + "Z"
+        
+        info = {
+            "id": doc_id,
+            "filename": filename,
+            "sizeBytes": len(bytes_data),
+            "totalPages": doc_instance.page_count,
+            "uploadedAt": uploaded_at,
+            "status": "ready",
+            "doc_instance": doc_instance,
+            "bytes_data": bytes_data
+        }
+        
+        with self._lock:
+            self._documents[doc_id] = info
+            
+        return info
+
+    def get_document(self, doc_id: str) -> Optional[Dict[str, Any]]:
+        with self._lock:
+            return self._documents.get(doc_id)
+
+    def list_documents(self) -> List[Dict[str, Any]]:
+        with self._lock:
+            return list(self._documents.values())
+
+    def delete_document(self, doc_id: str) -> bool:
+        with self._lock:
+            if doc_id in self._documents:
+                del self._documents[doc_id]
+                return True
+            return False
+
+document_store = DocumentStore()
@@ -20,6 +20,12 @@ def test_health_does_not_require_engine(client: TestClient) -> None:
    transitively import the pybind11 module (which doesn't exist yet)."""
    import sys

-    response = client.get("/health")
-    assert response.status_code == 200
-    assert "pdfengine" not in sys.modules
+    had_pdfengine = "pdfengine" in sys.modules
+    pdfengine_module = sys.modules.pop("pdfengine", None)
+    try:
+        response = client.get("/health")
+        assert response.status_code == 200
+        assert "pdfengine" not in sys.modules
+    finally:
+        if had_pdfengine and pdfengine_module is not None:
+            sys.modules["pdfengine"] = pdfengine_module
@@ -1,29 +0,0 @@
-"""Every PDF-touching route returns 501 until the engine bridge exists.
-
-When Gate G0b lands and `bindings/python/` is wired up, these tests will
-fail loudly — that is the cue to replace them with real route tests.
-"""
-
-import pytest
-from fastapi.testclient import TestClient
-
-
-@pytest.mark.parametrize(
-    ("method", "path"),
-    [
-        ("POST", "/documents"),
-        ("GET", "/documents"),
-        ("GET", "/documents/abc"),
-        ("DELETE", "/documents/abc"),
-        ("GET", "/documents/abc/pages/0/render"),
-        ("GET", "/documents/abc/pages/0/text"),
-        ("POST", "/documents/abc/edits"),
-    ],
-)
-def test_placeholder_routes_return_501(client: TestClient, method: str, path: str) -> None:
-    response = client.request(method, path)
-    assert response.status_code == 501, (
-        f"{method} {path} returned {response.status_code}; "
-        "Phase 0 placeholder routes must 501 until the engine bridge exists."
-    )
-    assert "engine bridge" in response.json()["detail"].lower()
@@ -0,0 +1,159 @@
+import os
+from pathlib import Path
+import pytest
+from fastapi.testclient import TestClient
+
+from app.services import engine
+from app.services.store import document_store
+
+pytestmark = pytest.mark.skipif(
+    not engine.is_available(),
+    reason="pdfengine pybind11 module is not compiled/available."
+)
+
+CORPUS_DIR = Path(__file__).parent.parent.parent / "corpus"
+HELLO_WORLD_PDF = CORPUS_DIR / "basic" / "hello_world.pdf"
+
+@pytest.fixture(autouse=True)
+def clean_store():
+    with document_store._lock:
+        document_store._documents.clear()
+    yield
+
+def test_upload_document_success(client: TestClient):
+    assert HELLO_WORLD_PDF.exists(), f"Test corpus file not found at {HELLO_WORLD_PDF}"
+    
+    with open(HELLO_WORLD_PDF, "rb") as f:
+        response = client.post(
+            "/documents",
+            files={"file": (HELLO_WORLD_PDF.name, f, "application/pdf")}
+        )
+    
+    assert response.status_code == 201
+    payload = response.json()
+    assert "id" in payload
+    assert payload["filename"] == HELLO_WORLD_PDF.name
+    assert payload["sizeBytes"] == HELLO_WORLD_PDF.stat().st_size
+    assert payload["totalPages"] == 1
+    assert payload["status"] == "ready"
+
+def test_upload_document_invalid(client: TestClient):
+    response = client.post(
+        "/documents",
+        files={"file": ("test.pdf", b"not-a-pdf-file-content", "application/pdf")}
+    )
+    assert response.status_code == 400
+    assert "invalid pdf" in response.json()["detail"].lower()
+
+def test_list_and_get_document(client: TestClient):
+    # Upload one
+    with open(HELLO_WORLD_PDF, "rb") as f:
+        upload_resp = client.post(
+            "/documents",
+            files={"file": (HELLO_WORLD_PDF.name, f, "application/pdf")}
+        )
+    doc_id = upload_resp.json()["id"]
+
+    # List
+    list_resp = client.get("/documents")
+    assert list_resp.status_code == 200
+    docs = list_resp.json()
+    assert len(docs) == 1
+    assert docs[0]["id"] == doc_id
+
+    # Get details
+    get_resp = client.get(f"/documents/{doc_id}")
+    assert get_resp.status_code == 200
+    assert get_resp.json()["filename"] == HELLO_WORLD_PDF.name
+
+    # Get non-existent
+    fake_resp = client.get("/documents/non-existent-uuid")
+    assert fake_resp.status_code == 404
+
+def test_delete_document(client: TestClient):
+    with open(HELLO_WORLD_PDF, "rb") as f:
+        upload_resp = client.post(
+            "/documents",
+            files={"file": (HELLO_WORLD_PDF.name, f, "application/pdf")}
+        )
+    doc_id = upload_resp.json()["id"]
+
+    # Delete
+    del_resp = client.delete(f"/documents/{doc_id}")
+    assert del_resp.status_code == 200
+    assert del_resp.json() == {"success": True}
+
+    # Verify deleted
+    get_resp = client.get(f"/documents/{doc_id}")
+    assert get_resp.status_code == 404
+
+def test_render_page_standard_and_compat(client: TestClient):
+    with open(HELLO_WORLD_PDF, "rb") as f:
+        upload_resp = client.post(
+            "/documents",
+            files={"file": (HELLO_WORLD_PDF.name, f, "application/pdf")}
+        )
+    doc_id = upload_resp.json()["id"]
+
+    # Test standard test suite route
+    render_resp = client.get(f"/documents/{doc_id}/pages/0/render?dpi=150")
+    assert render_resp.status_code == 200
+    assert render_resp.headers["content-type"] == "image/png"
+    assert len(render_resp.content) > 0
+
+    # Test compat route (used by frontend)
+    compat_resp = client.get(f"/render/{doc_id}?page=0&zoom=1.5")
+    assert compat_resp.status_code == 200
+    assert compat_resp.headers["content-type"] == "image/png"
+    assert len(compat_resp.content) > 0
+
+    # Test page out of bounds
+    fail_resp = client.get(f"/documents/{doc_id}/pages/5/render")
+    assert fail_resp.status_code == 404
+
+def test_extract_page_text(client: TestClient):
+    with open(HELLO_WORLD_PDF, "rb") as f:
+        upload_resp = client.post(
+            "/documents",
+            files={"file": (HELLO_WORLD_PDF.name, f, "application/pdf")}
+        )
+    doc_id = upload_resp.json()["id"]
+
+    text_resp = client.get(f"/documents/{doc_id}/pages/0/text")
+    assert text_resp.status_code == 200
+    payload = text_resp.json()
+    assert "text" in payload
+    assert "hello" in payload["text"].lower()
+
+def test_apply_edits_and_incremental_save(client: TestClient):
+    with open(HELLO_WORLD_PDF, "rb") as f:
+        upload_resp = client.post(
+            "/documents",
+            files={"file": (HELLO_WORLD_PDF.name, f, "application/pdf")}
+        )
+    doc_id = upload_resp.json()["id"]
+
+    edits_payload = {
+        "operations": [
+            {
+                "type": "add_text",
+                "pageIndex": 0,
+                "data": {
+                    "text": "Edited Text Annotation",
+                    "x": 100.0,
+                    "y": 150.0
+                }
+            }
+        ]
+    }
+
+    edits_resp = client.post(f"/documents/{doc_id}/edits", json=edits_payload)
+    assert edits_resp.status_code == 200
+    payload = edits_resp.json()
+    assert payload["success"] is True
+    new_doc_id = payload["newDocumentId"]
+    assert new_doc_id != doc_id
+
+    render_resp = client.get(f"/documents/{new_doc_id}/pages/0/render")
+    assert render_resp.status_code == 200
+    assert render_resp.headers["content-type"] == "image/png"
@@ -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 $LASTEXITCODE
+}
+
+Write-Host "Success! The python extension is compiled and copied to the gateway." -ForegroundColor Green
@@ -0,0 +1,68 @@
+$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 $destDir"
@@ -0,0 +1,10 @@
+$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 $gatewayDir
+try {
+    & .venv\Scripts\uvicorn app.main:app --reload
+} finally {
+    Pop-Location
+}
@@ -0,0 +1,15 @@
+$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 $LASTEXITCODE
@@ -0,0 +1,10 @@
+$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
+}
@@ -13,7 +13,8 @@
    "freetype",
    "harfbuzz",
    "spdlog",
-    "gtest"
+    "gtest",
+    "pybind11"
  ],
  "builtin-baseline": "495848814af4cc2760e70f7440c2dbe66d3ff196"
 }