fix: backward compatibility for focus_areas migration

- get_focus_areas now tries user_focus_preferences first (Migration 031)
- Falls back to old focus_areas table if Migration 031 not applied
- get_goals_grouped wraps focus_contributions loading in try/catch
- Graceful degradation until migrations run

backend/routers/goals.py

@@ -201,17 +201,32 @@ def get_focus_areas(session: dict = Depends(require_auth)):
     with get_db() as conn:
         cur = get_cursor(conn)
 
-        # Try to get custom focus areas
+        # Try to get custom focus areas (user_focus_preferences after Migration 031)
-        cur.execute("""
+        try:
-            SELECT weight_loss_pct, muscle_gain_pct, strength_pct,
+            cur.execute("""
-                   endurance_pct, flexibility_pct, health_pct,
+                SELECT weight_loss_pct, muscle_gain_pct, strength_pct,
-                   created_at, updated_at
+                       endurance_pct, flexibility_pct, health_pct,
-            FROM focus_areas
+                       created_at, updated_at
-            WHERE profile_id = %s AND active = true
+                FROM user_focus_preferences
-            LIMIT 1
+                WHERE profile_id = %s
-        """, (pid,))
+                LIMIT 1
-
+            """, (pid,))
-        row = cur.fetchone()
+            row = cur.fetchone()
+        except Exception as e:
+            # Migration 031 not applied yet, try old table name
+            print(f"[WARNING] user_focus_preferences not found, trying old focus_areas: {e}")
+            try:
+                cur.execute("""
+                    SELECT weight_loss_pct, muscle_gain_pct, strength_pct,
+                           endurance_pct, flexibility_pct, health_pct,
+                           created_at, updated_at
+                    FROM focus_areas
+                    WHERE profile_id = %s AND active = true
+                    LIMIT 1
+                """, (pid,))
+                row = cur.fetchone()
+            except:
+                row = None
 
         if row:
             return {