Phase 2 Complete: SDK Bridge Foundation (T011-T026)

Implemented complete C# gRPC service wrapping GeViScope SDK:

✅ gRPC Protocol Definitions (T011-T014):
- common.proto: Status, Error, Timestamp messages
- camera.proto: CameraService with ListCameras, GetCamera RPCs
- monitor.proto: MonitorService with ListMonitors, GetMonitor RPCs
- crossswitch.proto: CrossSwitchService with ExecuteCrossSwitch, ClearMonitor, GetRoutingState, HealthCheck RPCs

✅ SDK Wrapper Classes (T015-T021):
- GeViDatabaseWrapper.cs: Connection lifecycle with retry logic (3 attempts, exponential backoff)
- StateQueryHandler.cs: GetFirst/GetNext enumeration pattern for cameras/monitors
- ActionDispatcher.cs: CrossSwitch and ClearVideoOutput action execution
- ErrorTranslator.cs: SDK errors → gRPC status codes → HTTP status codes

✅ gRPC Service Implementations (T022-T026):
- CameraService.cs: List/get camera information from GeViServer
- MonitorService.cs: List/get monitor/viewer information from GeViServer
- CrossSwitchService.cs: Execute cross-switching, clear monitors, query routing state
- Program.cs: gRPC server with Serilog logging, dependency injection
- appsettings.json: GeViServer connection configuration

Key Features:
- Async/await pattern throughout
- Comprehensive error handling and logging
- In-memory routing state tracking
- Health check endpoint
- Connection retry with exponential backoff
- Proper resource disposal

Architecture:
FastAPI (Python) ←gRPC→ SDK Bridge (C# .NET 8.0) ←SDK→ GeViServer

Ready for Phase 3: Python API Foundation

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

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/sdk-bridge/GeViScopeBridge/Services/MonitorService.cs

@@ -0,0 +1,119 @@
+using Grpc.Core;
+using GeViScopeBridge.Protos;
+using GeViScopeBridge.SDK;
+using GeViScopeBridge.Utils;
+using Serilog;
+
+namespace GeViScopeBridge.Services
+{
+    /// <summary>
+    /// gRPC service for monitor (video output) operations
+    /// </summary>
+    public class MonitorServiceImplementation : MonitorService.MonitorServiceBase
+    {
+        private readonly StateQueryHandler _stateQuery;
+        private readonly ILogger _logger;
+
+        public MonitorServiceImplementation(StateQueryHandler stateQuery, ILogger logger)
+        {
+            _stateQuery = stateQuery ?? throw new ArgumentNullException(nameof(stateQuery));
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+        }
+
+        /// <summary>
+        /// List all monitors/viewers (video outputs)
+        /// </summary>
+        public override async Task<ListMonitorsResponse> ListMonitors(
+            ListMonitorsRequest request,
+            ServerCallContext context)
+        {
+            try
+            {
+                _logger.Information("ListMonitors called");
+
+                var monitors = await _stateQuery.EnumerateMonitorsAsync();
+
+                var response = new ListMonitorsResponse
+                {
+                    TotalCount = monitors.Count
+                };
+
+                foreach (var monitor in monitors)
+                {
+                    response.Monitors.Add(new MonitorInfo
+                    {
+                        Id = monitor.Id,
+                        Name = monitor.Name,
+                        Description = monitor.Description,
+                        IsActive = monitor.IsActive,
+                        CurrentCameraId = monitor.CurrentCameraId,
+                        Status = monitor.Status,
+                        LastUpdated = new Timestamp
+                        {
+                            Seconds = DateTimeOffset.UtcNow.ToUnixTimeSeconds(),
+                            Nanos = 0
+                        }
+                    });
+                }
+
+                _logger.Information("ListMonitors completed: {Count} monitors", monitors.Count);
+                return response;
+            }
+            catch (Exception ex)
+            {
+                _logger.Error(ex, "Failed to list monitors");
+                throw ErrorTranslator.CreateRpcException(ex, "Failed to list monitors");
+            }
+        }
+
+        /// <summary>
+        /// Get detailed information about a specific monitor
+        /// </summary>
+        public override async Task<MonitorInfo> GetMonitor(
+            GetMonitorRequest request,
+            ServerCallContext context)
+        {
+            try
+            {
+                _logger.Information("GetMonitor called for monitor {MonitorId}", request.MonitorId);
+
+                // Enumerate all monitors and find the requested one
+                var monitors = await _stateQuery.EnumerateMonitorsAsync();
+                var monitor = monitors.FirstOrDefault(m => m.Id == request.MonitorId);
+
+                if (monitor == null)
+                {
+                    throw new RpcException(new Status(StatusCode.NotFound,
+                        $"Monitor with ID {request.MonitorId} not found"));
+                }
+
+                var response = new MonitorInfo
+                {
+                    Id = monitor.Id,
+                    Name = monitor.Name,
+                    Description = monitor.Description,
+                    IsActive = monitor.IsActive,
+                    CurrentCameraId = monitor.CurrentCameraId,
+                    Status = monitor.Status,
+                    LastUpdated = new Timestamp
+                    {
+                        Seconds = DateTimeOffset.UtcNow.ToUnixTimeSeconds(),
+                        Nanos = 0
+                    }
+                };
+
+                _logger.Information("GetMonitor completed for monitor {MonitorId}", request.MonitorId);
+                return response;
+            }
+            catch (RpcException)
+            {
+                throw;  // Re-throw RpcExceptions as-is
+            }
+            catch (Exception ex)
+            {
+                _logger.Error(ex, "Failed to get monitor {MonitorId}", request.MonitorId);
+                throw ErrorTranslator.CreateRpcException(ex, "Failed to get monitor");
+            }
+        }
+    }
+}