fix(api): align categories table schema with model

The `categories` table schema in the database seeder was missing the `icon_url` column, which is present in the `Category` data model. This caused a mismatch between the model and the database layer.

This change adds the `icon_url` column to the `CREATE TABLE` and `INSERT` statements in the `DatabaseSeedingService`, ensuring the schema is fully synchronized with the model.

Author: fulleni

lib/src/services/database_seeding_service.dart

@@ -61,6 +61,7 @@ class DatabaseSeedingService {
             id TEXT PRIMARY KEY,
             name TEXT NOT NULL,
             description TEXT,
+            icon_url TEXT,
             status TEXT,
             type TEXT,
             created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
@@ -163,9 +164,9 @@ class DatabaseSeedingService {
           final category = Category.fromJson(data);
           await _connection.execute(
             Sql.named(
-              'INSERT INTO categories (id, name, description, status, '
-              'type, created_at, updated_at) VALUES (@id, @name, '
-              '@description, @status, @type, @created_at, @updated_at) '
+              'INSERT INTO categories (id, name, description, icon_url, '
+              'status, type, created_at, updated_at) VALUES (@id, @name, '
+              '@description, @iconUrl, @status, @type, @created_at, @updated_at) '
               'ON CONFLICT (id) DO NOTHING',
             ),
             parameters: category.toJson(),