Refactor code structure for improved readability and maintainability; optimize performance in key functions.

src/AirGap/__Libraries/StellaOps.AirGap.Bundle/Models/BundleManifest.cs

@@ -0,0 +1,104 @@
+using System.Collections.Immutable;
+
+namespace StellaOps.AirGap.Bundle.Models;
+
+/// <summary>
+/// Manifest for an offline bundle, inventorying all components with content digests.
+/// Used for integrity verification and completeness checking in air-gapped environments.
+/// </summary>
+public sealed record BundleManifest
+{
+    public required string BundleId { get; init; }
+    public string SchemaVersion { get; init; } = "1.0.0";
+    public required string Name { get; init; }
+    public required string Version { get; init; }
+    public required DateTimeOffset CreatedAt { get; init; }
+    public DateTimeOffset? ExpiresAt { get; init; }
+    public required ImmutableArray<FeedComponent> Feeds { get; init; }
+    public required ImmutableArray<PolicyComponent> Policies { get; init; }
+    public required ImmutableArray<CryptoComponent> CryptoMaterials { get; init; }
+    public ImmutableArray<CatalogComponent> Catalogs { get; init; } = [];
+    public RekorSnapshot? RekorSnapshot { get; init; }
+    public ImmutableArray<CryptoProviderComponent> CryptoProviders { get; init; } = [];
+    public long TotalSizeBytes { get; init; }
+    public string? BundleDigest { get; init; }
+}
+
+public sealed record FeedComponent(
+    string FeedId,
+    string Name,
+    string Version,
+    string RelativePath,
+    string Digest,
+    long SizeBytes,
+    DateTimeOffset SnapshotAt,
+    FeedFormat Format);
+
+public enum FeedFormat
+{
+    StellaOpsNative,
+    TrivyDb,
+    GrypeDb,
+    OsvJson
+}
+
+public sealed record PolicyComponent(
+    string PolicyId,
+    string Name,
+    string Version,
+    string RelativePath,
+    string Digest,
+    long SizeBytes,
+    PolicyType Type);
+
+public enum PolicyType
+{
+    OpaRego,
+    LatticeRules,
+    UnknownBudgets,
+    ScoringWeights
+}
+
+public sealed record CryptoComponent(
+    string ComponentId,
+    string Name,
+    string RelativePath,
+    string Digest,
+    long SizeBytes,
+    CryptoComponentType Type,
+    DateTimeOffset? ExpiresAt);
+
+public enum CryptoComponentType
+{
+    TrustRoot,
+    IntermediateCa,
+    TimestampRoot,
+    SigningKey,
+    FulcioRoot
+}
+
+public sealed record CatalogComponent(
+    string CatalogId,
+    string Ecosystem,
+    string Version,
+    string RelativePath,
+    string Digest,
+    long SizeBytes,
+    DateTimeOffset SnapshotAt);
+
+public sealed record RekorSnapshot(
+    string TreeId,
+    long TreeSize,
+    string RootHash,
+    string RelativePath,
+    string Digest,
+    DateTimeOffset SnapshotAt);
+
+public sealed record CryptoProviderComponent(
+    string ProviderId,
+    string Name,
+    string Version,
+    string RelativePath,
+    string Digest,
+    long SizeBytes,
+    ImmutableArray<string> SupportedAlgorithms);