{
  "project": "demo",
  "description": "Native core with Python and TypeScript frontends.",
  "exclude": ["dist/**", "build/**"],
  "layers": [
    {
      "name": "core",
      "role": "core",
      "language": "c",
      "globs": ["include/**/*.h", "src/**/*.c"],
      "public_headers": ["include/demo.h"],
      "import_roots": ["include", "src"]
    },
    {
      "name": "python",
      "role": "frontend",
      "language": "python",
      "globs": ["python/demo/**/*.py"],
      "import_roots": ["python"]
    },
    {
      "name": "javascript",
      "role": "frontend",
      "language": "typescript",
      "globs": ["js/src/**/*.ts"],
      "import_roots": ["js/src"]
    },
    {
      "name": "python-tests",
      "role": "test",
      "language": "python",
      "globs": ["python/tests/**/*.py"],
      "import_roots": ["python"]
    },
    {
      "name": "javascript-tests",
      "role": "test",
      "language": "typescript",
      "globs": ["js/test/**/*.ts"],
      "import_roots": ["js/src"]
    }
  ],
  "packages": [
    {
      "name": "python",
      "kind": "python",
      "path": "python/pyproject.toml",
      "layer": "python",
      "entries": ["python/demo/__init__.py"]
    },
    {
      "name": "npm",
      "kind": "npm",
      "path": "js/package.json",
      "layer": "javascript",
      "entries": ["js/src/index.ts"]
    }
  ],
  "builds": [
    {"name": "make", "kind": "make", "path": "Makefile"},
    {"name": "npm", "kind": "npm", "path": "js/package.json"}
  ],
  "tests": [
    {
      "name": "python",
      "language": "python",
      "globs": ["python/tests/test_*.py"],
      "route_to": ["python", "core"],
      "case_routes": [
        {
          "selector": "test_client_open",
          "paths": ["python/tests/test_client.py"],
          "to": "src/core.c",
          "target_symbols": ["demo_open"]
        }
      ]
    },
    {
      "name": "javascript",
      "language": "typescript",
      "globs": ["js/test/**/*.test.ts"],
      "route_to": ["javascript", "core"]
    }
  ],
  "components": [
    {"name": "native-core", "paths": ["include/**", "src/**"]},
    {"name": "python-api", "paths": ["python/demo/**"]},
    {"name": "javascript-api", "paths": ["js/src/**"]}
  ],
  "projections": {
    "public-core-api": {
      "select": "symbols",
      "layer": "core",
      "paths": ["include/demo.h"],
      "public_only": true
    }
  },
  "queries": {
    "public-api-impact": {
      "projection": "public-core-api",
      "direction": "upstream",
      "depth": 2,
      "context": {"profile": "change"}
    }
  },
  "constraints": {
    "CORE-PUBLIC-API": {
      "assert": "required_subset",
      "expected": {"literal": ["demo_close", "demo_open"]},
      "actual": {"projection": "public-core-api"},
      "severity": "error",
      "owner": "core",
      "requirement": "ARCH-CORE-001",
      "rationale": "Both supported native entrypoints must remain public."
    },
    "PYTHON-CORE-ROUTE": {
      "kind": "test_routes",
      "group": "python",
      "min": 1,
      "required_routes": ["src/core.c"],
      "severity": "error",
      "owner": "python",
      "requirement": "TEST-PY-001",
      "rationale": "At least one configured Python case must route to the core."
    }
  }
}