# Binary Intelligence Engine (Function-Level Code Fingerprinting)

## Module
Scanner

## Status
VERIFIED

## Description
Function-level binary code fingerprinting for entry-trace native terminals, including deterministic symbol-window extraction, vulnerable marker matching, and binary intelligence payload propagation through storage and API contracts.

## Implementation Details
- **Entry-trace graph contract**:
  - `src/Scanner/__Libraries/StellaOps.Scanner.EntryTrace/EntryTraceTypes.cs`
    - Added `EntryTraceGraph.BinaryIntelligence`
    - Added `EntryTraceBinaryIntelligence`, `EntryTraceBinaryTarget`, `EntryTraceBinaryVulnerability`
- **Serializer/storage round-trip**:
  - `src/Scanner/__Libraries/StellaOps.Scanner.EntryTrace/Serialization/EntryTraceGraphSerializer.cs`
    - Added binary intelligence contract mappings and round-trip conversion.
- **Worker enrichment**:
  - `src/Scanner/StellaOps.Scanner.Worker/Processing/EntryTraceExecutionService.cs`
    - Integrates binary intelligence generation for native terminals during entry-trace execution.
    - Produces deterministic function windows, binary-format inference, CVE marker extraction, and graph enrichment.
- **API surface**:
  - `src/Scanner/StellaOps.Scanner.WebService/Contracts/EntryTraceResponse.cs`
  - `src/Scanner/StellaOps.Scanner.WebService/Endpoints/ScanEndpoints.cs`
    - Entry-trace response returns `graph.binaryIntelligence` when available.
- **Behavioral coverage**:
  - `src/Scanner/__Tests/StellaOps.Scanner.Worker.Tests/EntryTraceExecutionServiceTests.cs`
  - `src/Scanner/__Tests/StellaOps.Scanner.WebService.Tests/ScansEndpointsTests.cs`
  - `src/Scanner/__Tests/StellaOps.Scanner.Storage.Tests/EntryTraceResultStoreTests.cs`

## E2E Test Plan
- [x] Verify function-level binary fingerprinting behavior in EntryTrace binary test namespace.
- [x] Verify worker entry-trace execution attaches binary intelligence for native terminal binaries.
- [x] Verify `GET /api/v1/scans/{scanId}/entrytrace` returns graph payload including `binaryIntelligence`.
- [x] Verify persisted `EntryTraceResult` round-trips binary intelligence through serializer/repository.

## Verification
- Run ID: `run-002`
- Date (UTC): 2026-02-12
- Tier 0: Source verification passed (`tier0-source-check.json`).
- Tier 1: Build and focused test executions passed (`tier1-build-check.json`, `tier1-build-results.json`, `tier1-test-results.json`).
- Tier 2: Integration checks passed for worker, endpoint, and storage round-trip (`tier2-e2e-check.json`).