Expose metric calculation status

[bsbodden]

Summary

• Track structured per-metric calculation status on MFCQICalculator
• Preserve graceful score degradation while exposing failures and errors
• Include metric statuses in JSON analysis output

Closes #4

Tests

• uv run pytest tests/test_mfcqi_calculator.py tests/test_analyze_helpers.py tests/test_output.py -q
• uv run ruff check src/mfcqi/calculator.py src/mfcqi/cli/commands/analyze_helpers.py src/mfcqi/cli/utils/output.py tests/test_mfcqi_calculator.py tests/test_output.py

[github-actions]

✅ MFCQI Score: 0.87 → (±0.000)

➡️ Previous: 0.87

Code quality meets the minimum threshold (0.70).

[github-actions]

✅ MFCQI Score: 0.87 → (±0.000)

➡️ Previous: 0.87

Code quality meets the minimum threshold (0.70).

[github-actions]

✅ Code Quality Report

Metric	Score	Status
MFCQI Score	0.8711370410743782	✅ Good
Test Coverage	82%	✅ Good
Security Issues	0	✅ Clean

Quality Gates

• MFCQI Score: ✅ Minimum 0.75 (Current: 0.8711370410743782)
• Test Coverage: ✅ Minimum 80% (Current: 82%)
• Security: ✅ Zero vulnerabilities (Current: 0)

🎉 All quality gates passed! This PR maintains high code quality standards.

📊 View detailed MFCQI breakdown

Run mfcqi analyze src/mfcqi locally to see detailed metrics breakdown.

[github-actions]

✅ MFCQI Score: 0.87 → (±0.000)

➡️ Previous: 0.87

Code quality meets the minimum threshold (0.70).

[github-actions]

✅ Code Quality Report

Metric	Score	Status
MFCQI Score	0.871356056048525	✅ Good
Test Coverage	82%	✅ Good
Security Issues	0	✅ Clean

Quality Gates

• MFCQI Score: ✅ Minimum 0.75 (Current: 0.871356056048525)
• Test Coverage: ✅ Minimum 80% (Current: 82%)
• Security: ✅ Zero vulnerabilities (Current: 0)

🎉 All quality gates passed! This PR maintains high code quality standards.

📊 View detailed MFCQI breakdown

Run mfcqi analyze src/mfcqi locally to see detailed metrics breakdown.