# Claim ID Generator for Static-Runtime Linkage

## Module
Scanner

## Status
VERIFIED

## Description
Deterministic claim ID generator using format `claim:<artifact-digest>:<path-hash>` to link runtime observations to static reachability claims, with ObservationType enum (Static/Runtime/Confirmed).

## Implementation Details
- **Claim ID Generator**:
  - `src/Scanner/__Libraries/StellaOps.Scanner.Reachability/Witnesses/ClaimIdGenerator.cs` - Generates deterministic claim IDs in `claim:<artifact-digest>:<path-hash>` format
- **Observation Type**:
  - `src/Scanner/__Libraries/StellaOps.Scanner.Reachability/Witnesses/ObservationType.cs` - `ObservationType` enum (Static/Runtime/Confirmed)
- **Path Witness Integration**:
  - `src/Scanner/__Libraries/StellaOps.Scanner.Reachability/Witnesses/PathWitness.cs` - PathWitness model carries claim IDs for static-runtime linkage
  - `src/Scanner/__Libraries/StellaOps.Scanner.Reachability/Witnesses/PathWitnessBuilder.cs` - Builder sets claim IDs during witness construction
- **Runtime Witness**:
  - `src/Scanner/__Libraries/StellaOps.Scanner.Reachability/Witnesses/RuntimeWitnessRequest.cs` - Runtime witness request carrying claim IDs
  - `src/Scanner/__Libraries/StellaOps.Scanner.Reachability/Witnesses/RuntimeWitnessPredicateTypes.cs` - Predicate types for runtime witnesses
  - `src/Scanner/__Libraries/StellaOps.Scanner.Reachability/Witnesses/IRuntimeWitnessGenerator.cs` - Interface for runtime witness generation
- **Claim Verification**:
  - `src/Scanner/__Libraries/StellaOps.Scanner.Reachability/FunctionMap/Verification/ClaimVerifier.cs` - Verifies claim IDs match between static and runtime evidence
  - `src/Scanner/__Libraries/StellaOps.Scanner.Reachability/FunctionMap/Verification/IClaimVerifier.cs` - Interface

## E2E Test Plan
- [ ] Scan an image and verify claim IDs are generated in `claim:<artifact-digest>:<path-hash>` format for each reachability path
- [ ] Verify the same scan produces identical claim IDs deterministically
- [ ] Submit runtime observation data with claim IDs and verify linkage to static reachability claims
- [ ] Verify `ClaimVerifier` validates matching claim IDs between static and runtime evidence
- [ ] Verify ObservationType transitions from Static to Confirmed when runtime evidence matches
- [ ] Verify mismatched claim IDs are rejected by the verifier with appropriate error

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## Verification

| Check | Result |
|-------|--------|
| Tier 0 - Source files exist | PASS |
| Tier 1 - Build + code review | PASS |
| Tier 2 - Integration tests | PASS |
| Verified | 2026-02-13T18:10:00Z |