fix: Update GitHub workflows to handle platform-specific builds correctly

Fix workflow issues preventing builds from running:

**Test Workflow (test.yml)**
- Change from solution restore to test project only
- Only restore/build HihaArvio.Tests.csproj (net8.0 target)
- Prevents iOS/macOS workload errors on Ubuntu runner
- Tests run on Ubuntu (fast, cheap, no platform dependencies)

**Build Workflow (build.yml)**
- Replace `dotnet workload install maui` with `dotnet workload restore`
- Use project-specific restore instead of solution restore
- Restore only HihaArvio.csproj for each platform job
- Add `--no-restore` flag to build commands
- More reliable workload installation

**Publish Workflow (publish.yml)**
- Replace `dotnet workload install maui` with `dotnet workload restore`
- Use project-specific restore instead of solution restore
- Add `--no-restore` flag to publish commands
- Consistent with build workflow pattern

**Why These Changes**:
1. Solution restore on Linux tries to restore iOS/macOS targets
2. This requires workloads that don't exist on Ubuntu
3. Error: "NETSDK1147: workloads must be installed: wasm-tools-net8"
4. Solution: Only restore what each platform needs
5. Test project (net8.0) works on any platform
6. MAUI projects (iOS/macOS) only on macOS runners

**Benefits**:
- Tests run successfully on Ubuntu
- Faster workload installation (restore vs install)
- More explicit about dependencies
- Avoids unnecessary multi-platform restore
- Cleaner build logs

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

.github/workflows/build.yml

@@ -21,14 +21,14 @@ jobs:
       with:
         dotnet-version: '8.0.x'
 
-    - name: Install MAUI workload
-      run: dotnet workload install maui --source https://api.nuget.org/v3/index.json
+    - name: Restore workloads
+      run: dotnet workload restore src/HihaArvio/HihaArvio.csproj
 
     - name: Restore dependencies
-      run: dotnet restore HihaArvio.sln
+      run: dotnet restore src/HihaArvio/HihaArvio.csproj
 
     - name: Build iOS
-      run: dotnet build src/HihaArvio/HihaArvio.csproj -f net8.0-ios -c Release /p:ArchiveOnBuild=false /p:EnableCodeSigning=false
+      run: dotnet build src/HihaArvio/HihaArvio.csproj -f net8.0-ios -c Release --no-restore /p:ArchiveOnBuild=false /p:EnableCodeSigning=false
 
     - name: Upload iOS build artifacts
       uses: actions/upload-artifact@v4
@@ -52,14 +52,14 @@ jobs:
       with:
         dotnet-version: '8.0.x'
 
-    - name: Install MAUI workload
-      run: dotnet workload install maui --source https://api.nuget.org/v3/index.json
+    - name: Restore workloads
+      run: dotnet workload restore src/HihaArvio/HihaArvio.csproj
 
     - name: Restore dependencies
-      run: dotnet restore HihaArvio.sln
+      run: dotnet restore src/HihaArvio/HihaArvio.csproj
 
     - name: Build macOS Catalyst
-      run: dotnet build src/HihaArvio/HihaArvio.csproj -f net8.0-maccatalyst -c Release /p:ArchiveOnBuild=false /p:EnableCodeSigning=false
+      run: dotnet build src/HihaArvio/HihaArvio.csproj -f net8.0-maccatalyst -c Release --no-restore /p:ArchiveOnBuild=false /p:EnableCodeSigning=false
 
     - name: Upload macOS build artifacts
       uses: actions/upload-artifact@v4

.github/workflows/publish.yml

@@ -98,17 +98,18 @@ jobs:
       with:
         dotnet-version: ${{ env.DOTNET_VERSION }}
 
-    - name: Install MAUI workload
-      run: dotnet workload install maui --source https://api.nuget.org/v3/index.json
+    - name: Restore workloads
+      run: dotnet workload restore src/HihaArvio/HihaArvio.csproj
 
     - name: Restore dependencies
-      run: dotnet restore HihaArvio.sln
+      run: dotnet restore src/HihaArvio/HihaArvio.csproj
 
     - name: Build iOS Release
       run: |
         dotnet publish src/HihaArvio/HihaArvio.csproj \
           -f net8.0-ios \
           -c Release \
+          --no-restore \
           /p:ApplicationDisplayVersion=${{ needs.create-release.outputs.version }} \
           /p:ApplicationVersion=${{ github.run_number }} \
           /p:ArchiveOnBuild=false \
@@ -144,17 +145,18 @@ jobs:
       with:
         dotnet-version: ${{ env.DOTNET_VERSION }}
 
-    - name: Install MAUI workload
-      run: dotnet workload install maui --source https://api.nuget.org/v3/index.json
+    - name: Restore workloads
+      run: dotnet workload restore src/HihaArvio/HihaArvio.csproj
 
     - name: Restore dependencies
-      run: dotnet restore HihaArvio.sln
+      run: dotnet restore src/HihaArvio/HihaArvio.csproj
 
     - name: Build macOS Catalyst Release
       run: |
         dotnet publish src/HihaArvio/HihaArvio.csproj \
           -f net8.0-maccatalyst \
           -c Release \
+          --no-restore \
           /p:ApplicationDisplayVersion=${{ needs.create-release.outputs.version }} \
           /p:ApplicationVersion=${{ github.run_number }} \
           /p:ArchiveOnBuild=false \

.github/workflows/test.yml

@@ -21,13 +21,13 @@ jobs:
         dotnet-version: '8.0.x'
 
     - name: Restore dependencies
-      run: dotnet restore HihaArvio.sln
+      run: dotnet restore tests/HihaArvio.Tests/HihaArvio.Tests.csproj
 
-    - name: Build solution
-      run: dotnet build HihaArvio.sln --configuration Release --no-restore -f net8.0
+    - name: Build test project
+      run: dotnet build tests/HihaArvio.Tests/HihaArvio.Tests.csproj --configuration Release --no-restore
 
     - name: Run tests
-      run: dotnet test HihaArvio.sln --configuration Release --no-build --verbosity normal -f net8.0 --logger "trx;LogFileName=test-results.trx"
+      run: dotnet test tests/HihaArvio.Tests/HihaArvio.Tests.csproj --configuration Release --no-build --verbosity normal --logger "trx;LogFileName=test-results.trx"
 
     - name: Publish test results
       uses: dorny/test-reporter@v1