[
  {
    "stage_index": 1,
    "name": "Environment Initialization",
    "action_type": "setup",
    "description": "Configure conda environment, activate target repository directory, setup bash subshell environment variables."
  },
  {
    "stage_index": 2,
    "name": "Issue Parsing & Repo Exploration",
    "action_type": "inspection",
    "description": "Read issue description, locate relevant files via search/find commands, inspect AST or symbol definitions."
  },
  {
    "stage_index": 3,
    "name": "Reproduce & Write Regression Test",
    "action_type": "test_generation",
    "description": "Write standalone reproducing test script reproducing the reported issue and assert failure."
  },
  {
    "stage_index": 4,
    "name": "Iterative File Editing",
    "action_type": "code_modification",
    "description": "Use dedicated line-oriented or regex editor to patch source files."
  },
  {
    "stage_index": 5,
    "name": "Test Execution & Stderr Verification",
    "action_type": "output_validation",
    "description": "Run pytest/compiler, parse exit code ($?), extract stack trace if non-zero."
  },
  {
    "stage_index": 6,
    "name": "Deterministic Termination",
    "action_type": "stop_evaluation",
    "description": "If tests pass (exit code 0) and regression verified, invoke submit action. If failed, iterate with stderr context."
  }
]