Fix-build-issues (#22)

* refactor: Move Wails service bindings to internal/wails package

Moves all Wails service wrapper files from root directory to internal/wails/

for better organization and separation of concerns.

Changes:

- Moved: jwt_service.go, barcode_service.go, conversion_service.go,

         data_generator_service.go, codeformatter_service.go

- Updated package from 'main' to 'wails'

- Changed startup() to Startup() (exported method)

- Updated main.go and server.go imports

- Updated type references to use wails package

* fix: wrong be package, try to build proper binary for each platform

* fix: unit tests

* fix: unit tests path

* Fix Windows build: remove redundant mv command since Wails already outputs .exe

* Make code signing optional and add macOS installation instructions for unsigned builds

* Fix macOS DMG build: clean up existing files before creating DMG

Author: vuon9

.github/workflows/build.yml

@@ -120,6 +120,9 @@ jobs:
           if [ "${{ matrix.os }}" = "macos-latest" ]; then
             # macOS: create DMG using create-dmg
             brew install create-dmg
+            # Clean up any existing files
+            rm -f release/dev-toolbox-${{ matrix.build }}.dmg
+            rm -f /tmp/rw.*.dev-toolbox-${{ matrix.build }}.dmg
             create-dmg \
               --volname "Dev-Toolbox" \
               --window-pos 200 120 \
@@ -137,31 +140,6 @@ jobs:
           fi
         shell: bash
 
-      # Package and upload build artifacts
-      - name: Package Artifacts
-        run: |
-          mkdir -p release
-          if [ "${{ matrix.os }}" = "macos-latest" ]; then
-            # macOS: create DMG using create-dmg
-            brew install create-dmg
-            create-dmg \
-              --volname "Dev-Toolbox" \
-              --window-pos 200 120 \
-              --window-size 800 400 \
-              --icon-size 100 \
-              --app-drop-link 600 185 \
-              "release/dev-toolbox-${{ matrix.build }}.dmg" \
-              "build/bin/dev-toolbox.app"
-          elif [ "${{ matrix.os }}" = "windows-latest" ]; then
-            # Windows: rename binary with .exe extension
-            mv build/bin/dev-toolbox build/bin/dev-toolbox.exe
-            cp build/bin/dev-toolbox.exe release/dev-toolbox-${{ matrix.build }}.exe
-          else
-            # Linux: create AppImage or tar.gz
-            tar -czf "release/dev-toolbox-${{ matrix.build }}.tar.gz" -C build/bin dev-toolbox
-          fi
-        shell: bash
-
       - name: Upload Artifacts
         uses: actions/upload-artifact@v4
         with: