feat: Implement approvals workflow and notifications integration

- Added approvals orchestration with persistence and workflow scaffolding.
- Integrated notifications insights and staged resume hooks.
- Introduced approval coordinator and policy notification bridge with unit tests.
- Added approval decision API with resume requeue and persisted plan snapshots.
- Documented the Excitor consensus API beta and provided JSON sample payload.
- Created analyzers to flag usage of deprecated merge service APIs.
- Implemented logging for artifact uploads and approval decision service.
- Added tests for PackRunApprovalDecisionService and related components.

src/Concelier/StellaOps.Concelier.WebService/Extensions/JobRegistrationExtensions.cs

@@ -52,9 +52,11 @@ internal static class JobRegistrationExtensions
         new("source:vndr-oracle:parse", "StellaOps.Concelier.Connector.Vndr.Oracle.OracleParseJob", "StellaOps.Concelier.Connector.Vndr.Oracle", TimeSpan.FromMinutes(15), TimeSpan.FromMinutes(5)),
         new("source:vndr-oracle:map", "StellaOps.Concelier.Connector.Vndr.Oracle.OracleMapJob", "StellaOps.Concelier.Connector.Vndr.Oracle", TimeSpan.FromMinutes(15), TimeSpan.FromMinutes(5)),
 
-        new("export:json", "StellaOps.Concelier.Exporter.Json.JsonExportJob", "StellaOps.Concelier.Exporter.Json", TimeSpan.FromMinutes(10), TimeSpan.FromMinutes(5)),
+        new("export:json", "StellaOps.Concelier.Exporter.Json.JsonExportJob", "StellaOps.Concelier.Exporter.Json", TimeSpan.FromMinutes(10), TimeSpan.FromMinutes(5)),
         new("export:trivy-db", "StellaOps.Concelier.Exporter.TrivyDb.TrivyDbExportJob", "StellaOps.Concelier.Exporter.TrivyDb", TimeSpan.FromMinutes(20), TimeSpan.FromMinutes(10)),
+#pragma warning disable CS0618, CONCELIER0001 // Legacy merge job remains available until MERGE-LNM-21-002 completes.
         new("merge:reconcile", "StellaOps.Concelier.Merge.Jobs.MergeReconcileJob", "StellaOps.Concelier.Merge", TimeSpan.FromMinutes(15), TimeSpan.FromMinutes(5))
+#pragma warning restore CS0618, CONCELIER0001
     };
 
     public static IServiceCollection AddBuiltInConcelierJobs(this IServiceCollection services)