31 lines
2.0 KiB
Markdown
31 lines
2.0 KiB
Markdown
# 8-State Reachability Lattice
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## Module
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ReachGraph
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## Status
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IMPLEMENTED
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## Description
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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.
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## What's Implemented
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- **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
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- **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
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- **ConfidenceCalculator**: `src/__Libraries/StellaOps.Reachability.Core/ConfidenceCalculator.cs` -- confidence score computation
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- **IReachabilityIndex**: `src/__Libraries/StellaOps.Reachability.Core/IReachabilityIndex.cs` -- `QueryHybridAsync` returns `HybridReachabilityResult` with lattice state
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- **HybridReachabilityResult**: `src/__Libraries/StellaOps.Reachability.Core/HybridReachabilityResult.cs` -- includes lattice state, confidence, and VEX recommendation
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## What's Missing
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- 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
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- Triage-specific UI for lattice state visualization and manual state overrides
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- Lattice state persistence and audit trail for state transitions
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## Implementation Plan
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- Expose lattice state transitions as an API for triage integration
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- Build UI for lattice state visualization and manual overrides
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- Add persistence layer for state transition history and audit trail
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## Related Documentation
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- Source: See feature catalog
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