Add Windows build scripts, fix multi-threaded MPQ extraction, and cross-platform temp paths

- Add build.ps1/bat, rebuild.ps1/bat, debug_texture.ps1/bat (Windows equivalents
  of existing bash scripts, using directory junctions for Data link)
- Fix asset extractor: StormLib is not thread-safe even with separate handles per
  thread. Serialize all MPQ reads behind a mutex while keeping CRC computation and
  disk writes parallel. Previously caused 99.8% extraction failures with >1 thread.
- Add SFileHasFile() check during enumeration to skip listfile-only entries
- Add diagnostic logging for extraction failures (first 5 per thread + summary)
- Use std::filesystem::temp_directory_path() instead of hardcoded /tmp/ in
  character_renderer.cpp debug dumps
- Update debug_texture.sh to use $TMPDIR fallback and glob for actual dump filenames

build.bat

@@ -0,0 +1,3 @@
+@echo off
+REM Convenience wrapper — launches the PowerShell build script.
+powershell -ExecutionPolicy Bypass -File "%~dp0build.ps1" %*

build.ps1

@@ -0,0 +1,44 @@
+<#
+.SYNOPSIS
+    Builds the wowee project (Windows equivalent of build.sh).
+
+.DESCRIPTION
+    Creates a build directory, runs CMake configure + build, and creates a
+    directory junction for the Data folder so the binary can find assets.
+#>
+
+$ErrorActionPreference = "Stop"
+
+$ScriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
+Set-Location $ScriptDir
+
+Write-Host "Building wowee..."
+
+# Create build directory if it doesn't exist
+if (-not (Test-Path "build")) {
+    New-Item -ItemType Directory -Path "build" | Out-Null
+}
+Set-Location "build"
+
+# Configure with CMake
+Write-Host "Configuring with CMake..."
+& cmake .. -DCMAKE_BUILD_TYPE=Release
+if ($LASTEXITCODE -ne 0) { exit $LASTEXITCODE }
+
+# Build with all cores
+$numProcs = $env:NUMBER_OF_PROCESSORS
+if (-not $numProcs) { $numProcs = 4 }
+Write-Host "Building with $numProcs cores..."
+& cmake --build . --parallel $numProcs
+if ($LASTEXITCODE -ne 0) { exit $LASTEXITCODE }
+
+# Ensure Data junction exists in bin directory
+$binData = Join-Path (Get-Location) "bin\Data"
+if (-not (Test-Path $binData)) {
+    $target = (Resolve-Path (Join-Path (Get-Location) "..\Data")).Path
+    cmd /c mklink /J "$binData" "$target"
+}
+
+Write-Host ""
+Write-Host "Build complete! Binary: build\bin\wowee.exe"
+Write-Host "Run with: cd build\bin && .\wowee.exe"

debug_texture.bat

@@ -0,0 +1,3 @@
+@echo off
+REM Convenience wrapper — launches the PowerShell texture debug script.
+powershell -ExecutionPolicy Bypass -File "%~dp0debug_texture.ps1" %*

debug_texture.ps1

@@ -0,0 +1,64 @@
+<#
+.SYNOPSIS
+    Converts raw RGBA texture dumps to PNG for visual inspection (Windows equivalent of debug_texture.sh).
+
+.PARAMETER Width
+    Texture width in pixels. Defaults to 1024.
+
+.PARAMETER Height
+    Texture height in pixels. Defaults to 1024.
+
+.EXAMPLE
+    .\debug_texture.ps1
+    .\debug_texture.ps1 -Width 2048 -Height 2048
+#>
+
+param(
+    [int]$Width = 1024,
+    [int]$Height = 1024
+)
+
+$TempDir = $env:TEMP
+
+Write-Host "Converting debug textures (${Width}x${Height})..."
+
+# Find raw dumps — filenames include dimensions (e.g. wowee_composite_debug_1024x1024.raw)
+$rawFiles = Get-ChildItem -Path $TempDir -Filter "wowee_*_debug*.raw" -ErrorAction SilentlyContinue
+
+if (-not $rawFiles) {
+    Write-Host "No debug dumps found in $TempDir"
+    Write-Host "  (looked for $TempDir\wowee_*_debug*.raw)"
+    exit 0
+}
+
+foreach ($rawItem in $rawFiles) {
+    $raw = $rawItem.FullName
+    $png = $raw -replace '\.raw$', '.png'
+
+    # Try ImageMagick first, fall back to ffmpeg
+    if (Get-Command magick -ErrorAction SilentlyContinue) {
+        & magick -size "${Width}x${Height}" -depth 8 "rgba:$raw" "$png" 2>$null
+        if ($LASTEXITCODE -eq 0) {
+            Write-Host "Created $png (${Width}x${Height})"
+        } else {
+            Write-Host "Failed to convert $raw"
+        }
+    } elseif (Get-Command convert -ErrorAction SilentlyContinue) {
+        & convert -size "${Width}x${Height}" -depth 8 "rgba:$raw" "$png" 2>$null
+        if ($LASTEXITCODE -eq 0) {
+            Write-Host "Created $png (${Width}x${Height})"
+        } else {
+            Write-Host "Failed to convert $raw"
+        }
+    } elseif (Get-Command ffmpeg -ErrorAction SilentlyContinue) {
+        & ffmpeg -y -f rawvideo -pix_fmt rgba -s "${Width}x${Height}" -i "$raw" "$png" 2>$null
+        if ($LASTEXITCODE -eq 0) {
+            Write-Host "Created $png (${Width}x${Height})"
+        } else {
+            Write-Host "Failed to convert $raw"
+        }
+    } else {
+        Write-Host "Need 'magick' (ImageMagick) or 'ffmpeg' to convert $raw"
+        Write-Host "  Install: winget install ImageMagick.ImageMagick"
+    }
+}

debug_texture.sh

@@ -8,23 +8,32 @@ H=${2:-1024}
 
 echo "Converting debug textures (${W}x${H})..."
 
-for raw in /tmp/wowee_composite_debug.raw /tmp/wowee_equip_composite_debug.raw; do
-    if [ -f "$raw" ]; then
-        png="${raw%.raw}.png"
-        # Try ImageMagick first, fall back to ffmpeg
-        if command -v convert &>/dev/null; then
-            convert -size ${W}x${H} -depth 8 rgba:"$raw" "$png" 2>/dev/null && \
-                echo "Created $png (${W}x${H})" || \
-                echo "Failed to convert $raw"
-        elif command -v ffmpeg &>/dev/null; then
-            ffmpeg -y -f rawvideo -pix_fmt rgba -s ${W}x${H} -i "$raw" "$png" 2>/dev/null && \
-                echo "Created $png (${W}x${H})" || \
-                echo "Failed to convert $raw"
-        else
-            echo "Need 'convert' (ImageMagick) or 'ffmpeg' to convert $raw"
-            echo "  Install: sudo apt install imagemagick"
-        fi
+TMPD="${TMPDIR:-/tmp}"
+
+# Find raw dumps — filenames include dimensions (e.g. wowee_composite_debug_1024x1024.raw)
+shopt -s nullglob
+RAW_FILES=("$TMPD"/wowee_*_debug*.raw)
+shopt -u nullglob
+
+if [ ${#RAW_FILES[@]} -eq 0 ]; then
+    echo "No debug dumps found in $TMPD"
+    echo "  (looked for $TMPD/wowee_*_debug*.raw)"
+    exit 0
+fi
+
+for raw in "${RAW_FILES[@]}"; do
+    png="${raw%.raw}.png"
+    # Try ImageMagick first, fall back to ffmpeg
+    if command -v convert &>/dev/null; then
+        convert -size ${W}x${H} -depth 8 rgba:"$raw" "$png" 2>/dev/null && \
+            echo "Created $png (${W}x${H})" || \
+            echo "Failed to convert $raw"
+    elif command -v ffmpeg &>/dev/null; then
+        ffmpeg -y -f rawvideo -pix_fmt rgba -s ${W}x${H} -i "$raw" "$png" 2>/dev/null && \
+            echo "Created $png (${W}x${H})" || \
+            echo "Failed to convert $raw"
     else
-        echo "Not found: $raw"
+        echo "Need 'convert' (ImageMagick) or 'ffmpeg' to convert $raw"
+        echo "  Install: sudo apt install imagemagick"
     fi
 done

rebuild.bat

@@ -0,0 +1,3 @@
+@echo off
+REM Convenience wrapper — launches the PowerShell clean rebuild script.
+powershell -ExecutionPolicy Bypass -File "%~dp0rebuild.ps1" %*

rebuild.ps1

@@ -0,0 +1,50 @@
+<#
+.SYNOPSIS
+    Clean rebuilds the wowee project (Windows equivalent of rebuild.sh).
+
+.DESCRIPTION
+    Removes the build directory, reconfigures from scratch, rebuilds, and
+    creates a directory junction for the Data folder.
+#>
+
+$ErrorActionPreference = "Stop"
+
+$ScriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
+Set-Location $ScriptDir
+
+Write-Host "Clean rebuilding wowee..."
+
+# Remove build directory completely
+if (Test-Path "build") {
+    Write-Host "Removing old build directory..."
+    Remove-Item -Recurse -Force "build"
+}
+
+# Create fresh build directory
+New-Item -ItemType Directory -Path "build" | Out-Null
+Set-Location "build"
+
+# Configure with CMake
+Write-Host "Configuring with CMake..."
+& cmake .. -DCMAKE_BUILD_TYPE=Release
+if ($LASTEXITCODE -ne 0) { exit $LASTEXITCODE }
+
+# Build with all cores
+$numProcs = $env:NUMBER_OF_PROCESSORS
+if (-not $numProcs) { $numProcs = 4 }
+Write-Host "Building with $numProcs cores..."
+& cmake --build . --parallel $numProcs
+if ($LASTEXITCODE -ne 0) { exit $LASTEXITCODE }
+
+# Create Data junction in bin directory
+Write-Host "Creating Data junction..."
+$binData = Join-Path (Get-Location) "bin\Data"
+if (-not (Test-Path $binData)) {
+    $target = (Resolve-Path (Join-Path (Get-Location) "..\Data")).Path
+    cmd /c mklink /J "$binData" "$target"
+    Write-Host "  Created Data junction -> $target"
+}
+
+Write-Host ""
+Write-Host "Clean build complete! Binary: build\bin\wowee.exe"
+Write-Host "Run with: cd build\bin && .\wowee.exe"

src/rendering/character_renderer.cpp

@@ -812,10 +812,10 @@ VkTexture* CharacterRenderer::compositeTextures(const std::vector<std::string>&
         }
     }
 
-    // Debug: dump composite to /tmp for visual inspection
+    // Debug: dump composite to temp dir for visual inspection
     {
-        std::string dumpPath = "/tmp/wowee_composite_debug_" +
-            std::to_string(width) + "x" + std::to_string(height) + ".raw";
+        std::string dumpPath = (std::filesystem::temp_directory_path() / ("wowee_composite_debug_" +
+            std::to_string(width) + "x" + std::to_string(height) + ".raw")).string();
         std::ofstream dump(dumpPath, std::ios::binary);
         if (dump) {
             dump.write(reinterpret_cast<const char*>(composite.data()),

tools/asset_extract/extractor.cpp

@@ -548,6 +548,12 @@ bool Extractor::enumerateFiles(const Options& opts,
                     continue;
                 }
 
+                // Verify file actually exists in this archive's hash table
+                // (listfiles can reference files from other archives)
+                if (!SFileHasFile(hMpq, fileName.c_str())) {
+                    continue;
+                }
+
                 std::string norm = normalizeWowPath(fileName);
                 if (opts.onlyUsedDbcs && !wantedDbcs.empty() && !wantedDbcs.contains(norm)) {
                     continue;
@@ -624,24 +630,36 @@ bool Extractor::run(const Options& opts) {
     std::atomic<size_t> fileIndex{0};
     size_t totalFiles = files.size();
 
+    // Open archives ONCE in main thread — StormLib has global state that is not
+    // thread-safe even with separate handles, so we serialize all MPQ reads.
+    struct SharedArchive {
+        HANDLE handle;
+        int priority;
+        std::string path;
+    };
+    std::vector<SharedArchive> sharedHandles;
+    for (const auto& ad : archives) {
+        HANDLE h = nullptr;
+        if (SFileOpenArchive(ad.path.c_str(), 0, 0, &h)) {
+            sharedHandles.push_back({h, ad.priority, ad.path});
+        } else {
+            std::cerr << "  Failed to open archive: " << ad.path << "\n";
+        }
+    }
+    if (sharedHandles.empty()) {
+        std::cerr << "Failed to open any archives for extraction\n";
+        return false;
+    }
+    if (sharedHandles.size() < archives.size()) {
+        std::cerr << "  Opened " << sharedHandles.size()
+                  << "/" << archives.size() << " archives\n";
+    }
+
+    // Mutex protecting all StormLib calls (open/read/close are not thread-safe)
+    std::mutex mpqMutex;
+
     auto workerFn = [&]() {
-        // Each thread opens ALL archives independently (StormLib is not thread-safe per handle).
-        // Sorted highest-priority last, so we iterate in reverse to find the winning version.
-        struct ThreadArchive {
-            HANDLE handle;
-            int priority;
-        };
-        std::vector<ThreadArchive> threadHandles;
-        for (const auto& ad : archives) {
-            HANDLE h = nullptr;
-            if (SFileOpenArchive(ad.path.c_str(), 0, 0, &h)) {
-                threadHandles.push_back({h, ad.priority});
-            }
-        }
-        if (threadHandles.empty()) {
-            std::cerr << "Worker thread: failed to open any archives\n";
-            return;
-        }
+        int failLogCount = 0;
 
         while (true) {
             size_t idx = fileIndex.fetch_add(1);
@@ -654,35 +672,52 @@ bool Extractor::run(const Options& opts) {
             std::string mappedPath = PathMapper::mapPath(wowPath);
             std::string fullOutputPath = effectiveOutputDir + "/" + mappedPath;
 
-            // Search archives in reverse priority order (highest priority first)
-            HANDLE hFile = nullptr;
-            for (auto it = threadHandles.rbegin(); it != threadHandles.rend(); ++it) {
-                if (SFileOpenFileEx(it->handle, wowPath.c_str(), 0, &hFile)) {
-                    break;
+            // Read file data from MPQ under lock
+            std::vector<uint8_t> data;
+            {
+                std::lock_guard<std::mutex> lock(mpqMutex);
+
+                // Search archives in reverse priority order (highest priority first)
+                HANDLE hFile = nullptr;
+                for (auto it = sharedHandles.rbegin(); it != sharedHandles.rend(); ++it) {
+                    if (SFileOpenFileEx(it->handle, wowPath.c_str(), 0, &hFile)) {
+                        break;
+                    }
+                    hFile = nullptr;
+                }
+                if (!hFile) {
+                    stats.filesFailed++;
+                    if (failLogCount < 5) {
+                        failLogCount++;
+                        std::cerr << "  FAILED open: " << wowPath
+                                  << " (tried " << sharedHandles.size() << " archives)\n";
+                    }
+                    continue;
                 }
-                hFile = nullptr;
-            }
-            if (!hFile) {
-                stats.filesFailed++;
-                continue;
-            }
 
-            DWORD fileSize = SFileGetFileSize(hFile, nullptr);
-            if (fileSize == SFILE_INVALID_SIZE || fileSize == 0) {
-                SFileCloseFile(hFile);
-                stats.filesSkipped++;
-                continue;
-            }
+                DWORD fileSize = SFileGetFileSize(hFile, nullptr);
+                if (fileSize == SFILE_INVALID_SIZE || fileSize == 0) {
+                    SFileCloseFile(hFile);
+                    stats.filesSkipped++;
+                    continue;
+                }
 
-            std::vector<uint8_t> data(fileSize);
-            DWORD bytesRead = 0;
-            if (!SFileReadFile(hFile, data.data(), fileSize, &bytesRead, nullptr)) {
+                data.resize(fileSize);
+                DWORD bytesRead = 0;
+                if (!SFileReadFile(hFile, data.data(), fileSize, &bytesRead, nullptr)) {
+                    SFileCloseFile(hFile);
+                    stats.filesFailed++;
+                    if (failLogCount < 5) {
+                        failLogCount++;
+                        std::cerr << "  FAILED read: " << wowPath
+                                  << " (size=" << fileSize << ")\n";
+                    }
+                    continue;
+                }
                 SFileCloseFile(hFile);
-                stats.filesFailed++;
-                continue;
+                data.resize(bytesRead);
             }
-            SFileCloseFile(hFile);
-            data.resize(bytesRead);
+            // Lock released — CRC computation and disk write happen in parallel
 
             // Compute CRC32
             uint32_t crc = ManifestWriter::computeCRC32(data.data(), data.size());
@@ -694,6 +729,11 @@ bool Extractor::run(const Options& opts) {
             std::ofstream out(fullOutputPath, std::ios::binary);
             if (!out.is_open()) {
                 stats.filesFailed++;
+                if (failLogCount < 5) {
+                    failLogCount++;
+                    std::lock_guard<std::mutex> lock(manifestMutex);
+                    std::cerr << "  FAILED write: " << fullOutputPath << "\n";
+                }
                 continue;
             }
             out.write(reinterpret_cast<const char*>(data.data()), data.size());
@@ -721,10 +761,6 @@ bool Extractor::run(const Options& opts) {
                           << std::flush;
             }
         }
-
-        for (auto& th : threadHandles) {
-            SFileCloseArchive(th.handle);
-        }
     };
 
     std::cout << "Extracting " << totalFiles << " files using " << numThreads << " threads...\n";
@@ -737,10 +773,30 @@ bool Extractor::run(const Options& opts) {
         t.join();
     }
 
-    std::cout << "\r  Extracted " << stats.filesExtracted.load() << " files ("
+    // Close archives (opened once in main thread)
+    for (auto& sh : sharedHandles) {
+        SFileCloseArchive(sh.handle);
+    }
+
+    auto extracted = stats.filesExtracted.load();
+    auto failed = stats.filesFailed.load();
+    auto skipped = stats.filesSkipped.load();
+    std::cout << "\n  Extracted " << extracted << " files ("
               << stats.bytesExtracted.load() / (1024 * 1024) << " MB), "
-              << stats.filesSkipped.load() << " skipped, "
-              << stats.filesFailed.load() << " failed\n";
+              << skipped << " skipped, "
+              << failed << " failed\n";
+
+    // If most files failed, print a diagnostic hint
+    if (failed > 0 && failed > extracted * 10) {
+        std::cerr << "\nWARNING: " << failed << " out of " << totalFiles
+                  << " files failed to extract.\n"
+                  << "  This usually means worker threads could not open one or more MPQ archives.\n"
+                  << "  Common causes:\n"
+                  << "    - MPQ files on a network/external drive with access restrictions\n"
+                  << "    - Another program (WoW client, antivirus) has the MPQ files locked\n"
+                  << "    - Too many threads for the OS file-handle limit (try --threads 1)\n"
+                  << "  Re-run with --verbose for detailed diagnostics.\n";
+    }
 
     // Merge with existing manifest so partial extractions don't nuke prior entries
     std::string manifestPath = effectiveOutputDir + "/manifest.json";