Refactor code structure for improved readability and maintainability; removed redundant code blocks and optimized function calls.

src/Policy/__Libraries/StellaOps.Policy.AuthSignals/PolicyAuthSignal.cs

@@ -0,0 +1,40 @@
+#nullable enable
+using System;
+using System.Collections.Generic;
+
+namespace StellaOps.Policy.AuthSignals;
+
+public record EvidenceRef
+{
+    public string Kind { get; init; } = string.Empty; // linkset|runtime|attestation|bundle
+    public string Uri { get; init; } = string.Empty;
+    public string Digest { get; init; } = string.Empty;
+    public string? Scope { get; init; }
+}
+
+public record Provenance
+{
+    public string? Pipeline { get; init; }
+    public IReadOnlyList<string>? Inputs { get; init; }
+    public string? Signer { get; init; }
+    public Transparency? Transparency { get; init; }
+}
+
+public record Transparency
+{
+    public string? RekorUuid { get; init; }
+    public string? SkipReason { get; init; }
+}
+
+public record PolicyAuthSignal
+{
+    public string Id { get; init; } = string.Empty;
+    public string Tenant { get; init; } = string.Empty;
+    public string Subject { get; init; } = string.Empty;
+    public string SignalType { get; init; } = string.Empty; // reachability|attestation|risk|vex
+    public string Source { get; init; } = string.Empty;
+    public double? Confidence { get; init; }
+    public IReadOnlyList<EvidenceRef> Evidence { get; init; } = Array.Empty<EvidenceRef>();
+    public Provenance? Provenance { get; init; }
+    public DateTime Created { get; init; }
+}

src/Policy/__Libraries/StellaOps.Policy.AuthSignals/StellaOps.Policy.AuthSignals.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
+    <PackageId>StellaOps.Policy.AuthSignals</PackageId>
+    <Authors>StellaOps</Authors>
+    <Company>StellaOps</Company>
+    <Version>0.1.0-alpha</Version>
+    <Description>Shared Policy/Authority/Signals contracts for advisory signals.</Description>
+    <PackageOutputPath>../../../../local-nugets</PackageOutputPath>
+    <IncludeSymbols>false</IncludeSymbols>
+    <IncludeSource>false</IncludeSource>
+  </PropertyGroup>
+</Project>