fix: Migration 027 - health mode missing dimensions

Fixed health mode calculation to include all 6 dimensions.
Simplified CASE statements (single CASE instead of multiple additions).

Before: health mode only set flexibility (15%) + health (55%) = 70% ❌
After:  health mode sets all dimensions = 100% ✅
  - weight_loss: 5%
  - muscle_gain: 0%
  - strength: 10%
  - endurance: 20%
  - flexibility: 15%
  - health: 50%

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/migrations/027_focus_areas_system.sql

@@ -57,10 +57,10 @@ INSERT INTO focus_areas (
 SELECT
     id AS profile_id,
     CASE goal_mode
-        WHEN 'weight_loss' THEN 60 ELSE 0
-    END +
-    CASE goal_mode
-        WHEN 'recomposition' THEN 30 ELSE 0
+        WHEN 'weight_loss' THEN 60
+        WHEN 'recomposition' THEN 30
+        WHEN 'health' THEN 5
+        ELSE 0
     END AS weight_loss_pct,
 
     CASE goal_mode
@@ -71,23 +71,19 @@ SELECT
     END AS muscle_gain_pct,
 
     CASE goal_mode
-        WHEN 'strength' THEN 50 ELSE 0
-    END +
-    CASE goal_mode
-        WHEN 'recomposition' THEN 25 ELSE 0
-    END +
-    CASE goal_mode
-        WHEN 'weight_loss' THEN 10 ELSE 0
+        WHEN 'strength' THEN 50
+        WHEN 'recomposition' THEN 25
+        WHEN 'weight_loss' THEN 10
+        WHEN 'health' THEN 10
+        ELSE 0
     END AS strength_pct,
 
     CASE goal_mode
-        WHEN 'endurance' THEN 70 ELSE 0
-    END +
-    CASE goal_mode
-        WHEN 'recomposition' THEN 10 ELSE 0
-    END +
-    CASE goal_mode
-        WHEN 'weight_loss' THEN 20 ELSE 0
+        WHEN 'endurance' THEN 70
+        WHEN 'recomposition' THEN 10
+        WHEN 'weight_loss' THEN 20
+        WHEN 'health' THEN 20
+        ELSE 0
     END AS endurance_pct,
 
     CASE goal_mode
@@ -104,16 +100,11 @@ SELECT
     END AS flexibility_pct,
 
     CASE goal_mode
-        WHEN 'health' THEN 55 ELSE 0
-    END +
-    CASE goal_mode
-        WHEN 'endurance' THEN 20 ELSE 0
-    END +
-    CASE goal_mode
-        WHEN 'strength' THEN 10 ELSE 0
-    END +
-    CASE goal_mode
-        WHEN 'weight_loss' THEN 5 ELSE 0
+        WHEN 'health' THEN 50
+        WHEN 'endurance' THEN 20
+        WHEN 'strength' THEN 10
+        WHEN 'weight_loss' THEN 5
+        ELSE 0
     END AS health_pct
 FROM profiles
 WHERE goal_mode IS NOT NULL