# Link-Not-Merge Advisory Architecture

## Module
Concelier

## Status
VERIFIED

## Description
Advisory confirmed that existing Link-Not-Merge model is architecturally superior to proposed Unified Advisory Schema (UAS). Preserves conflict evidence and 3-component trust vector.

## Verification Summary
- **Run**: run-002 (deep QA)
- **Date**: 2026-02-13
- **Test project**: StellaOps.Concelier.Core.Tests (569 total, 567 passed, 2 pre-existing FeedSnapshotPinning failures)
- **Cross-feature verification**: LinksetCorrelationV2 (25 tests under concelier-lnm-linkset-cache-with-telemetry), LinkNotMergeTenantCapabilitiesProvider (14 tests under concelier-tenant-scoping), MergeHashCalculator (35+44 tests under deterministic-semantic-merge-hash), CanonicalAdvisoryService (28 tests under canonical-advisory-source-edge-schema)

## Key Verified Behaviors
- Link-Not-Merge architecture: advisories from different sources linked with separate source identities preserved
- Conflict evidence preservation: conflicting CVSS/aliases/versions produce typed conflicts (Hard/Soft) with source IDs and values
- V1 correlation: intersection-based alias/PURL/CPE/reference scoring with 40/25/15/10/5/5 weighting
- V2 correlation: improved accuracy with alias connectivity, IDF scoring, deterministic output
- V1/V2 selector: LinksetCorrelationService routes to V1 or V2 based on CorrelationServiceOptions.Version
- Deterministic output: same inputs produce same confidence scores and conflicts
- Tenant capabilities: LNM feature reported as available via capabilities endpoint

## Evidence
- `docs/qa/feature-checks/runs/concelier/link-not-merge-advisory-architecture/run-002/tier0-source-check.json`
- `docs/qa/feature-checks/runs/concelier/link-not-merge-advisory-architecture/run-002/tier1-code-review.json`
- `docs/qa/feature-checks/runs/concelier/link-not-merge-advisory-architecture/run-002/tier2-integration-check.json`