Fix build and code structure improvements. New but essential UI functionality. CI improvements. Documentation improvements. AI module improvements.

src/Scanner/__Libraries/StellaOps.Scanner.Sources/Services/SourceConnectionTester.cs

@@ -0,0 +1,85 @@
+using System.Text.Json;
+using Microsoft.Extensions.Logging;
+using StellaOps.Scanner.Sources.Contracts;
+using StellaOps.Scanner.Sources.Domain;
+
+namespace StellaOps.Scanner.Sources.Services;
+
+/// <summary>
+/// Dispatches connection tests to type-specific testers.
+/// </summary>
+public sealed class SourceConnectionTester : ISourceConnectionTester
+{
+    private readonly IEnumerable<ISourceTypeConnectionTester> _testers;
+    private readonly ILogger<SourceConnectionTester> _logger;
+
+    public SourceConnectionTester(
+        IEnumerable<ISourceTypeConnectionTester> testers,
+        ILogger<SourceConnectionTester> logger)
+    {
+        _testers = testers;
+        _logger = logger;
+    }
+
+    public Task<ConnectionTestResult> TestAsync(SbomSource source, CancellationToken ct = default)
+    {
+        return TestAsync(source, null, ct);
+    }
+
+    public async Task<ConnectionTestResult> TestAsync(
+        SbomSource source,
+        JsonDocument? testCredentials,
+        CancellationToken ct = default)
+    {
+        var tester = _testers.FirstOrDefault(t => t.SourceType == source.SourceType);
+        if (tester == null)
+        {
+            _logger.LogWarning(
+                "No connection tester registered for source type {SourceType}",
+                source.SourceType);
+
+            return new ConnectionTestResult
+            {
+                Success = false,
+                Message = $"No connection tester available for source type {source.SourceType}",
+                TestedAt = DateTimeOffset.UtcNow
+            };
+        }
+
+        try
+        {
+            _logger.LogDebug(
+                "Testing connection for source {SourceId} ({SourceType})",
+                source.SourceId, source.SourceType);
+
+            var result = await tester.TestAsync(source, testCredentials, ct);
+
+            _logger.LogInformation(
+                "Connection test for source {SourceId} {Result}: {Message}",
+                source.SourceId,
+                result.Success ? "succeeded" : "failed",
+                result.Message);
+
+            return result;
+        }
+        catch (OperationCanceledException)
+        {
+            throw;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Connection test failed for source {SourceId}", source.SourceId);
+
+            return new ConnectionTestResult
+            {
+                Success = false,
+                Message = $"Connection test error: {ex.Message}",
+                TestedAt = DateTimeOffset.UtcNow,
+                Details = new Dictionary<string, object>
+                {
+                    ["exceptionType"] = ex.GetType().Name
+                }
+            };
+        }
+    }
+}