formula_id: WBS_10_DOTNET_PARITY_CONTRACT_V1
owner: QuantEngine
status: draft
source_of_truth:
  - src/dotnet/QuantEngine.Core/Domain/FormulaEngine.cs
  - src/dotnet/QuantEngine.Core/Domain/ExitDecisions.cs
  - src/dotnet/QuantEngine.Core/Domain/FactorCalculator.cs
  - src/dotnet/QuantEngine.Core.Tests/FormulaEngineTests.cs
  - src/dotnet/QuantEngine.Core.Tests/FactorCalculatorTests.cs
  - src/dotnet/QuantEngine.Core.Tests/ParityTests/DomainParityTests.cs

goal: "Python reference와 .NET domain 결과를 데이터 기반 parity 계약으로 고정한다."

targets:
  - target_id: formula_engine_timing
    symbol: FormulaEngine.ComputeTimingDecision
    tolerance:
      numeric: 0
      text: exact
    evidence:
      - src/dotnet/QuantEngine.Core.Tests/FormulaEngineTests.cs
      - src/dotnet/QuantEngine.Core.Tests/ParityTests/DomainParityTests.cs
    pass_condition: "timing action/reason이 reference와 동일"

  - target_id: formula_engine_sell
    symbol: FormulaEngine.ComputeSellDecision
    tolerance:
      numeric: 0
      text: exact
    evidence:
      - src/dotnet/QuantEngine.Core.Tests/FormulaEngineTests.cs
      - src/dotnet/QuantEngine.Core.Tests/ParityTests/DomainParityTests.cs
    pass_condition: "sell action/ratio/validation이 reference와 동일"

  - target_id: formula_engine_final
    symbol: FormulaEngine.ComputeFinalDecision
    tolerance:
      numeric: 0
      text: exact
    evidence:
      - src/dotnet/QuantEngine.Core.Tests/FormulaEngineTests.cs
      - src/dotnet/QuantEngine.Core.Tests/ParityTests/DomainParityTests.cs
    pass_condition: "final action/priority/source가 reference와 동일"

  - target_id: exit_stop_price
    symbol: ExitDecisions.ComputeStopPriceCore
    tolerance:
      numeric: 0.0001
      text: exact
    evidence:
      - src/dotnet/QuantEngine.Core.Tests/ParityTests/DomainParityTests.cs
    pass_condition: "stop price within tolerance"

  - target_id: exit_stop_ladder
    symbol: ExitDecisions.ComputeStopActionLadder
    tolerance:
      numeric: 0
      text: exact
    evidence:
      - src/dotnet/QuantEngine.Core.Tests/ParityTests/DomainParityTests.cs
    pass_condition: "exit action ladder exact match"

  - target_id: exit_heat_thresholds
    symbol: ExitDecisions.ComputeDynamicHeatThresholds
    tolerance:
      numeric: 0
      text: exact
    evidence:
      - src/dotnet/QuantEngine.Core.Tests/ParityTests/DomainParityTests.cs
    pass_condition: "heat thresholds exact match"

  - target_id: factor_calculator
    symbol: FactorCalculator.CalculateFactors
    tolerance:
      numeric: 0.000001
      text: exact
    evidence:
      - src/dotnet/QuantEngine.Core.Tests/FactorCalculatorTests.cs
    pass_condition: "factor outputs stable and deterministic"

execution_notes:
  - "Parity is a contract, not a guess."
  - "Do not add new parity targets without updating reference fixtures and tolerances."