feat(advisory-ai): Add deployment guide, Dockerfile, and Helm chart for on-prem packaging

- Introduced a comprehensive deployment guide for AdvisoryAI, detailing local builds, remote inference toggles, and scaling guidance.
- Created a multi-role Dockerfile for building WebService and Worker images.
- Added a docker-compose file for local and offline deployment.
- Implemented a Helm chart for Kubernetes deployment with persistence and remote inference options.
- Established a new API endpoint `/advisories/summary` for deterministic summaries of observations and linksets.
- Introduced a JSON schema for risk profiles and a validator to ensure compliance with the schema.
- Added unit tests for the risk profile validator to ensure functionality and error handling.

src/AdvisoryAI/__Tests/StellaOps.AdvisoryAI.Tests/AdvisoryGuardrailOptionsBindingTests.cs

@@ -5,6 +5,7 @@ using System.Threading.Tasks;
 using FluentAssertions;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.FileProviders;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Options;
 using StellaOps.AdvisoryAI.Guardrails;
@@ -78,13 +79,15 @@ public sealed class AdvisoryGuardrailOptionsBindingTests
         public FakeHostEnvironment(string contentRoot)
         {
             ContentRootPath = contentRoot;
+            ContentRootFileProvider = new PhysicalFileProvider(contentRoot);
         }
 
         public string EnvironmentName { get; set; } = Environments.Development;
 
         public string ApplicationName { get; set; } = "StellaOps.AdvisoryAI.Tests";
 
-        public string ContentRootPath { get; set; }
-            = string.Empty;
+        public string ContentRootPath { get; set; } = string.Empty;
+
+        public IFileProvider ContentRootFileProvider { get; set; }
     }
 }