docs(t-matrix): 🧩 Add summary metrics and enhance Traceability Matrix layout

[rodneyaquino]

🧩 Add Summary Metrics to Traceability Matrix

🎯 Summary

This PR enhances the strategy/TRACEABILITY_MATRIX.md by adding a top-level summary section and improving formatting for clarity and readability.

🔍 What Changed

• Added a summary metrics table at the top with pass/fail counts, rate %, and key highlights.
• Updated markdown layout for better scannability.
• Preserved all detailed test mappings and pulled in missing tests

📊 Summary Metrics

Metric	Value
✅ Passes	7 / 10
❌ Fails	3 / 10
📈 Agent Pass Rate	70 % (below rubric target ≥ 80 %)

🧾 Files Modified

• strategy/TRACEABILITY_MATRIX.md

💡 Rationale

This is a documentation-only improvement to make quality signals more visible at a glance.
No functional or test behavior changes were introduced.

✅ Validation

• Verified markdown rendering locally.
• Confirmed no code or schema files were affected.