feat(dashboard, api): integrate BMI thresholds and enhance dashboard with health metrics

supabase/migrations/20250821213200_bmi_config.sql

@@ -0,0 +1,27 @@
+create table medreport.bmi_thresholds (
+  id bigserial primary key,
+  age_min int not null,
+  age_max int,
+  underweight_max numeric not null,
+  normal_min      numeric not null,
+  normal_max      numeric not null,
+  overweight_min  numeric not null,
+  strong_min      numeric not null,
+  obesity_min     numeric not null
+);
+
+insert into medreport.bmi_thresholds
+(age_min, age_max, underweight_max, normal_min, normal_max, overweight_min, strong_min, obesity_min)
+values
+(19, 24, 19, 19, 24, 24, 30, 35),
+(25, 34, 20, 20, 25, 25, 30, 35),
+(35, 44, 21, 21, 26, 26, 30, 35),
+(45, 54, 22, 22, 27, 27, 30, 35),
+(55, 64, 23, 23, 28, 28, 30, 35),
+(65, null, 24, 24, 29, 29, 30, 35);
+
+alter table medreport.bmi_thresholds enable row level security;
+
+grant select, insert, update, delete on table medreport.bmi_thresholds to authenticated;
+
+create policy "bmi_thresholds_select" on "medreport"."bmi_thresholds" for select to service_role using (true);