fix github workflow lint

Author: YaoxuanZhang

internal/database/connection.go

@@ -6,6 +6,7 @@ import (
 	"os"
 	"time"
 
+	"github.com/jackc/pgx/v5/pgconn"
 	"github.com/jackc/pgx/v5/pgxpool"
 )
 
@@ -42,6 +43,10 @@ func InitSchema(ctx context.Context, pool *pgxpool.Pool, schemaPath string) erro
 
 	_, err = pool.Exec(ctx, string(schema))
 	if err != nil {
+		// Ignore "already exists" errors (42P07) to allow idempotency
+		if pgErr, ok := err.(*pgconn.PgError); ok && pgErr.Code == "42P07" {
+			return nil
+		}
 		return fmt.Errorf("failed to execute schema: %w", err)
 	}
 

schema.sql

@@ -2,11 +2,7 @@
 -- Database Schema for CAPY (Club Assistant in Python)
 
 -- 1. ENUMs & Functions
-DO $$ BEGIN
-    CREATE TYPE user_role AS ENUM ('student', 'alumni', 'faculty', 'external');
-EXCEPTION
-    WHEN duplicate_object THEN null;
-END $$;
+CREATE TYPE user_role AS ENUM ('student', 'alumni', 'faculty', 'external');
 
 CREATE OR REPLACE FUNCTION update_modified_column()
 RETURNS TRIGGER AS $$