Merge pull request #79 from QWED-AI/tembo/add-unit-tests-process-guard-coverage90

Add process_guard.py tests

Author: rahuldass19

.coverage

@@ -1,5 +1,6 @@
 
 import re
+from decimal import Decimal
 from typing import List, Dict, Any
 
 class ProcessVerifier:
@@ -38,9 +39,8 @@ def verify_irac_structure(self, reasoning_trace: str) -> Dict[str, Any]:
             else:
                 missing_steps.append(step)
 
-        # Calculate score (0.0 to 1.0)
-        # 4 steps total
-        score = (4 - len(missing_steps)) / 4.0
+        # Calculate score (0 to 1) using Decimal for deterministic arithmetic
+        score = float(Decimal(4 - len(missing_steps)) / Decimal(4))
 
         return {
             "verified": len(missing_steps) == 0,
@@ -73,8 +73,8 @@ def verify_trace(self, text: str, key_middle: List[str]) -> Dict[str, Any]:
             kw for kw in key_middle 
             if re.search(rf"\b{re.escape(kw.lower())}\b", text_lc)
         ]
-        process_rate = len(found_milestones) / len(key_middle)
-        
+        process_rate = float(Decimal(len(found_milestones)) / Decimal(len(key_middle)))
+
         return {
             "verified": process_rate == 1.0,
             "process_rate": process_rate,