feat: add diet entity and user lifestyle habits with data seeding support

backend/src/db.rs

@@ -5,7 +5,7 @@ use sea_orm::sea_query::SqliteQueryBuilder;
 
 use crate::config::Config;
 use crate::models::bio::{biomarker, biomarker_category, biomarker_entry, biomarker_reference_rule};
-use crate::models::user::{role, session, user};
+use crate::models::user::{diet, role, session, user};
 
 /// Connect to the SQLite database.
 pub async fn connect(config: &Config) -> Result<DatabaseConnection, DbErr> {
@@ -27,6 +27,7 @@ pub async fn run_migrations(db: &DatabaseConnection) -> Result<(), DbErr> {
     // Create table statements (order matters for foreign keys)
     let statements = vec![
         schema.create_table_from_entity(role::Entity),
+        schema.create_table_from_entity(diet::Entity),
         schema.create_table_from_entity(user::Entity),
         schema.create_table_from_entity(session::Entity),
         schema.create_table_from_entity(biomarker_category::Entity),