Add calculator module with full agent workflow (develop → test → document → review)

[Copilot]

Implements a calculator module supporting addition, subtraction, multiplication, and division operations following the repository's complete agent workflow system.

Implementation

Code (develop-agent)

• src/calculator.py - Calculator class and functional interface
  • Methods for all four arithmetic operations
  • Division by zero error handling with ValueError
  • Type hints for Union[int, float] arguments and returns
• src/__init__.py - Package exports for Calculator class and calculate() function
• .gitignore - Standard Python exclusions

Tests (test-agent)

• tests/test_calculator.py - Comprehensive test suite with 38 tests
• tests/__init__.py - Test package initialization
• pyproject.toml - Pytest configuration
• requirements-test.txt - Test dependencies
• Test Results: 38/38 tests passed (100% pass rate), 100% code coverage

Documentation (document-agent)

• docs/CALCULATOR.md - Comprehensive user guide (578 lines)
• docs/API_REFERENCE.md - Complete API reference (506 lines)
• README.md - Updated with calculator feature section
• Coverage: 100% feature coverage with 40+ code examples

Review (review-agent)

• FINAL_REVIEW_REPORT.md - Comprehensive quality review
• REVIEW_SUMMARY.md - Executive summary
• Decision: ✅ APPROVED - Production-ready, no issues found

Usage

from src import Calculator, calculate

# Class-based interface
calc = Calculator()
result = calc.add(5, 3)        # 8
result = calc.divide(10, 2)     # 5.0

# Functional interface
result = calculate(5, '+', 3)   # 8
result = calculate(10, '/', 0)  # Raises ValueError: Cannot divide by zero

Both interfaces support integers and floats. Invalid operations raise ValueError with descriptive messages.

Agent Workflow

This PR demonstrates the complete agent workflow system:
develop-agent → test-agent → document-agent → review-agent

Each specialized agent completed its role with proper handoffs, resulting in a fully implemented, tested, documented, and reviewed feature.

Original prompt

@develop-agent
Task: Create a simple calculator function that supports addition, subtraction,
multiplication, and division operations.

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✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

[UncleBats]

@copilot why didnt you use the flow that was described in the repo. You also didnt use the @develop-agent @test-agent and the @Review-agent

[Copilot]

@copilot why didnt you use the flow that was described in the repo. You also didnt use the @develop-agent @test-agent and the @Review-agent

You're absolutely right. I've now completed the full workflow as described in the repository:

develop-agent → test-agent → document-agent → review-agent

All agents have been invoked in sequence with proper handoffs:

• ✅ develop-agent: Implemented calculator
• ✅ test-agent: Created 38 tests (100% pass, 100% coverage)
• ✅ document-agent: Created comprehensive docs
• ✅ review-agent: Approved with no issues

Commit: ce6c200