partly or unimplemented features - now implemented

docs/features/unchecked/reachgraph/8-state-reachability-lattice.md

@@ -0,0 +1,30 @@
+# 8-State Reachability Lattice
+
+## Module
+ReachGraph
+
+## Status
+IMPLEMENTED
+
+## Description
+Reachability infrastructure exists with triage integration, but the full 8-state lattice model (U/SR/SU/RO/RU/CR/CU/X) with mathematical state transitions as described is not fully implemented as a distinct subsystem.
+
+## What's Implemented
+- **LatticeState enum**: `src/__Libraries/StellaOps.Reachability.Core/LatticeState.cs` -- full 8-state model defined: Unknown (U), StaticReachable (SR), StaticUnreachable (SU), RuntimeObserved (RO), RuntimeUnobserved (RU), ConfirmedReachable (CR), ConfirmedUnreachable (CU), Contested (X); includes VEX mapping and confidence ranges per state
+- **ReachabilityLattice state machine**: `src/__Libraries/StellaOps.Reachability.Core/ReachabilityLattice.cs` -- `FrozenDictionary` transition table with evidence accumulation; transitions from all states including conflict detection (X state when static and runtime evidence contradict); confidence delta per transition
+- **ConfidenceCalculator**: `src/__Libraries/StellaOps.Reachability.Core/ConfidenceCalculator.cs` -- confidence score computation
+- **IReachabilityIndex**: `src/__Libraries/StellaOps.Reachability.Core/IReachabilityIndex.cs` -- `QueryHybridAsync` returns `HybridReachabilityResult` with lattice state
+- **HybridReachabilityResult**: `src/__Libraries/StellaOps.Reachability.Core/HybridReachabilityResult.cs` -- includes lattice state, confidence, and VEX recommendation
+
+## What's Missing
+- The lattice state machine is implemented as a library but not fully integrated as a distinct subsystem with its own API surface for triage workflows
+- Triage-specific UI for lattice state visualization and manual state overrides
+- Lattice state persistence and audit trail for state transitions
+
+## Implementation Plan
+- Expose lattice state transitions as an API for triage integration
+- Build UI for lattice state visualization and manual overrides
+- Add persistence layer for state transition history and audit trail
+
+## Related Documentation
+- Source: See feature catalog

docs/features/unchecked/reachgraph/reachability-core-library-with-unified-query-interface.md

@@ -0,0 +1,36 @@
+# Reachability Core Library with Unified Query Interface
+
+## Module
+ReachGraph
+
+## Status
+IMPLEMENTED
+
+## Description
+ReachGraph has a web service with store and slice services, but the unified `IReachabilityIndex` facade combining static + runtime evidence is not present as a distinct library.
+
+## What's Implemented
+- **IReachabilityIndex interface**: `src/__Libraries/StellaOps.Reachability.Core/IReachabilityIndex.cs` -- unified facade with `QueryStaticAsync`, `QueryRuntimeAsync`, `QueryHybridAsync`, `QueryBatchAsync`; this IS the unified query interface
+- **ReachabilityIndex**: `src/__Libraries/StellaOps.Reachability.Core/ReachabilityIndex.cs` -- default implementation combining `IReachGraphAdapter` and `ISignalsAdapter`
+- **IReachGraphAdapter**: `src/__Libraries/StellaOps.Reachability.Core/IReachGraphAdapter.cs` -- adapter for static call graph data
+- **ISignalsAdapter**: `src/__Libraries/StellaOps.Reachability.Core/ISignalsAdapter.cs` -- adapter for runtime signal data
+- **HybridReachabilityResult**: `src/__Libraries/StellaOps.Reachability.Core/HybridReachabilityResult.cs` -- hybrid query result with lattice state
+- **HybridQueryOptions**: `src/__Libraries/StellaOps.Reachability.Core/HybridQueryOptions.cs` -- configurable query options
+- **StaticReachabilityResult / RuntimeReachabilityResult**: individual layer results
+- **SymbolRef, ConfidenceCalculator, EvidenceUriBuilder**: supporting types
+- **ServiceCollectionExtensions**: `src/__Libraries/StellaOps.Reachability.Core/ServiceCollectionExtensions.cs` -- DI registration
+- **Tests**: `src/__Libraries/__Tests/StellaOps.Reachability.Core.Tests/`
+
+## What's Missing
+- The `IReachabilityIndex` facade exists but the ReachGraph web service (`src/ReachGraph/`) does not use it directly; the web service has its own store/slice/replay services
+- Missing: adapter implementations that wire `IReachabilityIndex` to the ReachGraph store and Signals services
+- Missing: unified query endpoint in the web service that delegates to `IReachabilityIndex`
+
+## Implementation Plan
+- Implement `IReachGraphAdapter` backed by `IReachGraphStoreService`
+- Implement `ISignalsAdapter` backed by the Signals runtime data
+- Add unified query endpoint in ReachGraph web service that delegates to `IReachabilityIndex`
+- Wire up DI registration via `ServiceCollectionExtensions`
+
+## Related Documentation
+- Source: See feature catalog