Remove large binary file and update .gitignore

- Remove example/main binary (54MB) that was accidentally committed
- Update .gitignore to exclude binary files
- Prevent future binary commits with specific patterns

Author: greysquirr3l

.gitignore

@@ -4,6 +4,8 @@
 *.dll
 *.so
 *.dylib
+main
+example/main
 
 # Test binary, built with `go test -c`
 *.test

example/main

@@ -0,0 +1,27 @@
+
+package main
+
+import (
+"fmt"
+"log"
+"gorm.io/driver/duckdb"
+"gorm.io/gorm"
+)
+
+func main() {
+db, err := gorm.Open(duckdb.Open(":memory:"), &gorm.Config{})
+if err != nil {
+log.Fatal("Failed to connect:", err)
+}
+
+sqlDB, err := db.DB()
+if err != nil {
+log.Fatal("Failed to get *sql.DB:", err)
+}
+
+if err := sqlDB.Ping(); err != nil {
+log.Fatal("Failed to ping:", err)
+}
+
+fmt.Println("✅ db.DB() method works correctly!")
+}