build: EvaluateInEngine262 tool

AGENTS.md

@@ -29,6 +29,7 @@ ask262/
 │   │   ├── specRetriever.ts  # Vector search tool
 │   │   ├── sectionRetriever.ts   # Section chunk retrieval tool
 │   │   ├── graphExplorer.ts  # Knowledge graph navigation tool
+│   │   ├── evaluateInEngine262.ts  # Execute JS and capture spec marks
 │   │   └── reranker.ts       # Document reranking utility
 │   └── setup/                # Data ingestion and graph building
 │       ├── ingest.ts         # Ingests spec HTML into vector index
@@ -39,8 +40,9 @@ ask262/
 │       └── utils/            # Formatting utilities
 │   └── test/                 # Manual verification tests
 │       └── manual/
-│           ├── verify-db.ts  # Verify database contents
-│           └── test-spec-retriever.ts
+│           ├── verify-db.ts              # Verify database contents
+│           ├── test-spec-retriever.ts    # Test spec retriever tool
+│           └── test-evaluate-in-engine262.ts  # Test evaluate tool
 ├── config.json               # API keys and endpoints (user-created)
 ├── spec-built/multipage/     # ECMAScript spec HTML files
 ├── engine262/src/            # JavaScript engine implementation
@@ -61,6 +63,8 @@ bun run lint:fix        # Fix auto-fixable issues
 bun run format:fix      # Format code with Biome
 bun run type-check      # TypeScript check (no emit)
 bun test                # Run all tests
+bun run test-evaluate   # Test evaluate in engine262 tool
+bun run test-spec-retriever "query"  # Test spec retriever tool with query
 bun run agent "Query"   # Run agent with question
 ```