fix: rename SIMILARITY_SCALE constant and fix terminology in docstrings

Author: Yogesh23-03

utils/recommender.py

@@ -111,9 +111,9 @@ def score_single_project(project, user_skills, level, interest, time_availabilit
     if project.get("time", "").lower() == time_availability.lower():
         bonus_score += WEIGHT_TIME
 
-    # Combine: skill similarity (scaled to 10) + bonus points
-    # Scaling skill_score to 10 keeps it comparable to bonus_score
-    final_score = (skill_score * 10) + bonus_score
+    SIMILARITY_SCALE = 10  # scales cosine similarity (0.0–1.0) to 0–10 range
+# so skill match weight is comparable to bonus_score (max 5 points)
+    final_score = (skill_score * SIMILARITY_SCALE) + bonus_score
 
     return final_score