)]}'
{
  "commit": "586f28e03a608b86df0c07b6662009f352409fc3",
  "tree": "d15fcbe5f806449924e0ccb1c9953fec8ee9287f",
  "parents": [
    "b05c53fb01342873787b545359f443b5dbf2be7f"
  ],
  "author": {
    "name": "Sketch🕴️",
    "email": "skallywag@sketch.dev",
    "time": "Sat Feb 28 19:14:46 2026 +0400"
  },
  "committer": {
    "name": "Sketch🕴️",
    "email": "skallywag@sketch.dev",
    "time": "Sat Feb 28 19:14:46 2026 +0400"
  },
  "message": "Step 6: Implement evaluator with TDD\n\n- Eval(ast.Node) (float64, error) - recursive AST walker\n- Handles all 4 operators: +, -, *, /\n- Division by zero returns error\n- Error propagation from sub-expressions\n- 10 unit tests covering: single number, all operators, nested/deep\n  expressions, division by zero (direct and in sub-expr), floats\n",
  "tree_diff": [
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      "new_id": "447adbecc19f333c0b9e2fc026d47117f4b2e7f4",
      "new_mode": 33188,
      "new_path": "evaluator/evaluator.go"
    },
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      "new_path": "evaluator/evaluator_test.go"
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