feat: Add initial implementation of Vulnerability Resolver Jobs

- Created project for StellaOps.Scanner.Analyzers.Native.Tests with necessary dependencies.
- Documented roles and guidelines in AGENTS.md for Scheduler module.
- Implemented IResolverJobService interface and InMemoryResolverJobService for handling resolver jobs.
- Added ResolverBacklogNotifier and ResolverBacklogService for monitoring job metrics.
- Developed API endpoints for managing resolver jobs and retrieving metrics.
- Defined models for resolver job requests and responses.
- Integrated dependency injection for resolver job services.
- Implemented ImpactIndexSnapshot for persisting impact index data.
- Introduced SignalsScoringOptions for configurable scoring weights in reachability scoring.
- Added unit tests for ReachabilityScoringService and RuntimeFactsIngestionService.
- Created dotnet-filter.sh script to handle command-line arguments for dotnet.
- Established nuget-prime project for managing package downloads.

src/Scheduler/__Libraries/StellaOps.Scheduler.ImpactIndex/IImpactIndex.cs

@@ -39,8 +39,29 @@ public interface IImpactIndex
     /// <param name="selector">Selector scoping the query.</param>
     /// <param name="usageOnly">When true, restricts results to images with entrypoint usage.</param>
     /// <param name="cancellationToken">Cancellation token.</param>
-    ValueTask<ImpactSet> ResolveAllAsync(
-        Selector selector,
-        bool usageOnly,
-        CancellationToken cancellationToken = default);
-}
+    ValueTask<ImpactSet> ResolveAllAsync(
+        Selector selector,
+        bool usageOnly,
+        CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// Removes an image digest and its component mappings from the index.
+    /// Used when an image is deleted or aged out.
+    /// </summary>
+    ValueTask RemoveAsync(
+        string imageDigest,
+        CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// Creates a compacted snapshot of the index for persistence (e.g., RocksDB/Redis).
+    /// </summary>
+    ValueTask<ImpactIndexSnapshot> CreateSnapshotAsync(
+        CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// Restores index state from a previously persisted snapshot.
+    /// </summary>
+    ValueTask RestoreSnapshotAsync(
+        ImpactIndexSnapshot snapshot,
+        CancellationToken cancellationToken = default);
+}