feat(api): add PipelineController and factory methods for pipeline viewer

- Add GetAvailableTables, GetPipelineConfig, GetScheduleDefaults to IEtlPipelineFactory
- Implement new methods in EtlPipelineFactory
- Create PipelineController with endpoints:
  - GET /api/pipelines - list all pipeline names
  - GET /api/pipelines/{name} - get pipeline configuration
  - GET /api/pipelines/{name}/status - get schedule status
  - GET /api/pipelines/{name}/executions - get execution history
- Add JdeScoping.DataSync reference to JdeScoping.Api

NEW/src/JdeScoping.DataSync/Contracts/IEtlPipelineFactory.cs

@@ -1,11 +1,36 @@
 using JdeScoping.Core.Models.Enums;
+using JdeScoping.DataSync.Configuration;
 using JdeScoping.DataSync.Etl.Pipeline;
 
 namespace JdeScoping.DataSync.Contracts;
 
 public interface IEtlPipelineFactory
 {
+    /// <summary>
+    /// Creates a pipeline builder for the specified table.
+    /// </summary>
+    /// <param name="tableName">The table name (pipeline key).</param>
+    /// <returns>A builder for configuring the pipeline.</returns>
     IEtlPipelineBuilder ForTable(string tableName);
+
+    /// <summary>
+    /// Gets the list of available table names (pipeline keys).
+    /// </summary>
+    /// <returns>List of table names with configured pipelines.</returns>
+    IReadOnlyList<string> GetAvailableTables();
+
+    /// <summary>
+    /// Gets the configuration for a specific pipeline.
+    /// </summary>
+    /// <param name="tableName">The table name (pipeline key).</param>
+    /// <returns>The pipeline configuration, or null if not found.</returns>
+    PipelineConfig? GetPipelineConfig(string tableName);
+
+    /// <summary>
+    /// Gets the schedule defaults from the configuration.
+    /// </summary>
+    /// <returns>The schedule defaults.</returns>
+    ScheduleDefaults GetScheduleDefaults();
 }
 
 public interface IEtlPipelineBuilder

NEW/src/JdeScoping.DataSync/Services/EtlPipelineFactory.cs

@@ -90,6 +90,24 @@ public class EtlPipelineFactory : IEtlPipelineFactory
             _logger);
     }
 
+    /// <inheritdoc />
+    public IReadOnlyList<string> GetAvailableTables()
+    {
+        return _config.Pipelines.Keys.ToList().AsReadOnly();
+    }
+
+    /// <inheritdoc />
+    public PipelineConfig? GetPipelineConfig(string tableName)
+    {
+        return _config.Pipelines.TryGetValue(tableName, out var config) ? config : null;
+    }
+
+    /// <inheritdoc />
+    public ScheduleDefaults GetScheduleDefaults()
+    {
+        return _config.EffectiveScheduleDefaults;
+    }
+
     private PipelinesRoot LoadPipelineConfigs(string configPath)
     {
         // Resolve path relative to assembly location (handles both debug and publish)