feat: Implement centralized logging with ServiceLogMessages and fix all warnings

- Create ServiceLogMessages.cs for centralized LoggerMessage delegates
- Refactor DocumentService and DocumentSearchService to use ILogger
- Replace all Console.WriteLine with structured logging
- Fix CS0168 warnings (unused exception variables)
- Fix CA2017 warnings (LoggerMessage template mismatches)
- Eliminate CA1848 warnings with LoggerMessage optimization
- Achieve 0 errors, 0 warnings, 0 messages
- Follow SOLID and DRY principles for logging architecture
- Move SmartRAG.API to examples/WebAPI/ directory
- Add XML documentation summaries to all interfaces

Author: byerlikaya

SmartRAG.sln

@@ -4,7 +4,7 @@ VisualStudioVersion = 17.0.31903.59
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SmartRAG", "src\SmartRAG\SmartRAG.csproj", "{DECA885F-8815-4A0F-A12C-30563827C255}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SmartRAG.API", "src\SmartRAG.API\SmartRAG.API.csproj", "{E7606EAF-F26D-441F-B5A4-34A72A70DD6C}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SmartRAG.API", "examples\WebAPI\SmartRAG.API.csproj", "{E7606EAF-F26D-441F-B5A4-34A72A70DD6C}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

examples/README.md

@@ -0,0 +1,54 @@
+# SmartRAG Examples
+
+This directory contains example projects demonstrating how to use SmartRAG in different scenarios.
+
+## 📁 Available Examples
+
+### **WebAPI** - ASP.NET Core Web API Example
+- **Location**: `WebAPI/`
+- **Description**: Complete web API implementation showing document upload, search, and RAG operations
+- **Features**: 
+  - Multi-document upload
+  - AI-powered question answering
+  - Smart query intent detection
+  - Multiple storage providers
+  - Comprehensive API documentation
+
+## 🚀 Running Examples
+
+### WebAPI Example
+```bash
+cd examples/WebAPI
+dotnet restore
+dotnet run
+```
+
+Browse to `https://localhost:5001/scalar/v1` for interactive API documentation.
+
+## 🔧 Configuration
+
+Each example includes its own configuration files. Copy and modify the template files as needed:
+
+```bash
+# Copy development configuration template
+cp appsettings.Development.template.json appsettings.Development.json
+
+# Edit with your API keys and configuration
+```
+
+## 📚 Documentation
+
+- **Main Documentation**: [SmartRAG README](../../README.md)
+- **API Reference**: [API Documentation](../../docs/api-reference.md)
+- **Configuration Guide**: [Configuration Guide](../../docs/configuration.md)
+
+## 🤝 Contributing
+
+Want to add more examples? Create a new directory and submit a pull request!
+
+### Example Types to Consider:
+- **Console Application** - Command-line interface
+- **Blazor WebAssembly** - Client-side web app
+- **WPF Application** - Desktop application
+- **Azure Functions** - Serverless implementation
+- **Minimal API** - Lightweight web API

src/SmartRAG.API/Contracts/SearchRequestIDto.cs renamed to examples/WebAPI/Contracts/SearchRequestIDto.cs

@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\SmartRAG\SmartRAG.csproj" />
+    <ProjectReference Include="..\..\src\SmartRAG\SmartRAG.csproj" />
   </ItemGroup>
 
   <ItemGroup>