Fix outdir: use trailing slash for x64, empty string for Win32

upload-artifact rejects '.' in paths. Use "x64/" and "" instead so
paths resolve to ./windows/x64/Release-Full and ./windows/Release-Full.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.github/workflows/build_windows.yml

@@ -38,13 +38,13 @@ jobs:
             vcpkg_triplet: x64-windows-static
             rust_target: x86_64-pc-windows-msvc
             gpac_install: "C:\\Program Files\\GPAC"
-            outdir: x64
+            outdir: "x64/"
           - arch: x86
             platform: Win32
             vcpkg_triplet: x86-windows-static
             rust_target: i686-pc-windows-msvc
             gpac_install: "C:\\Program Files (x86)\\GPAC"
-            outdir: .
+            outdir: ""
     steps:
       - name: Check out repository
         uses: actions/checkout@v6
@@ -127,15 +127,15 @@ jobs:
       - name: Display Release version information
         if: matrix.arch == 'x64'
         run: ./ccextractorwinfull.exe --version
-        working-directory: ./windows/${{ matrix.outdir }}/Release-Full
+        working-directory: ./windows/${{ matrix.outdir }}Release-Full
 
       - name: Upload Release artifact
         uses: actions/upload-artifact@v6
         with:
           name: CCExtractor Windows ${{ matrix.arch }} Release build
           path: |
-            ./windows/${{ matrix.outdir }}/Release-Full/ccextractorwinfull.exe
-            ./windows/${{ matrix.outdir }}/Release-Full/*.dll
+            ./windows/${{ matrix.outdir }}Release-Full/ccextractorwinfull.exe
+            ./windows/${{ matrix.outdir }}Release-Full/*.dll
 
       # Build Debug-Full (reuses cached Cargo artifacts)
       - name: Build Debug-Full
@@ -152,13 +152,13 @@ jobs:
         if: matrix.arch == 'x64'
         continue-on-error: true
         run: ./ccextractorwinfull.exe --version
-        working-directory: ./windows/${{ matrix.outdir }}/Debug-Full
+        working-directory: ./windows/${{ matrix.outdir }}Debug-Full
 
       - name: Upload Debug artifact
         uses: actions/upload-artifact@v6
         with:
           name: CCExtractor Windows ${{ matrix.arch }} Debug build
           path: |
-            ./windows/${{ matrix.outdir }}/Debug-Full/ccextractorwinfull.exe
-            ./windows/${{ matrix.outdir }}/Debug-Full/ccextractorwinfull.pdb
-            ./windows/${{ matrix.outdir }}/Debug-Full/*.dll
+            ./windows/${{ matrix.outdir }}Debug-Full/ccextractorwinfull.exe
+            ./windows/${{ matrix.outdir }}Debug-Full/ccextractorwinfull.pdb
+            ./windows/${{ matrix.outdir }}Debug-Full/*.dll

.github/workflows/release.yml

@@ -27,7 +27,7 @@ jobs:
             wix_arch: x64
             suffix: ""
             gpac_install: "C:\\Program Files\\GPAC"
-            outdir: x64
+            outdir: "x64/"
           - arch: x86
             platform: Win32
             vcpkg_triplet: x86-windows-static
@@ -35,7 +35,7 @@ jobs:
             wix_arch: x86
             suffix: "_x86"
             gpac_install: "C:\\Program Files (x86)\\GPAC"
-            outdir: .
+            outdir: ""
     steps:
     - name: Check out repository
       uses: actions/checkout@v6
@@ -101,7 +101,7 @@ jobs:
       run: msbuild ccextractor.sln /p:Configuration=Release-Full /p:Platform=${{ matrix.platform }} /p:GpacDir="${{ matrix.gpac_install }}"
       working-directory: ./windows
     - name: Copy files to directory for installer
-      run: mkdir installer; cp ./${{ matrix.outdir }}/Release-Full/ccextractorwinfull.exe ./installer; cp ./${{ matrix.outdir }}/Release-Full/*.dll ./installer
+      run: mkdir installer; cp ./${{ matrix.outdir }}Release-Full/ccextractorwinfull.exe ./installer; cp ./${{ matrix.outdir }}Release-Full/*.dll ./installer
       working-directory: ./windows
     - name: Download tessdata for OCR support
       run: |