Refactor and remove sqlite and replace with MySQL

internal/storage/sqlite/db.go

@@ -0,0 +1,53 @@
+package storage
+
+import (
+	"database/sql"
+	"log"
+
+	"synlotto-website/config"
+	"synlotto-website/logging"
+
+	_ "modernc.org/sqlite"
+)
+
+var db *sql.DB
+
+func InitDB(filepath string) *sql.DB {
+	var err error
+	cfg := config.Get()
+	db, err = sql.Open("sqlite", filepath)
+	if err != nil {
+		log.Fatal("❌ Failed to open DB:", err)
+	}
+
+	schemas := []string{
+		SchemaUsers,
+		SchemaThunderballResults,
+		SchemaThunderballPrizes,
+		SchemaLottoResults,
+		SchemaMyTickets,
+		SchemaUsersMessages,
+		SchemaUsersNotifications,
+		SchemaAuditLog,
+		SchemaAuditLogin,
+		SchemaLogTicketMatching,
+		SchemaAdminAccessLog,
+		SchemaNewAuditLog,
+		SchemaSyndicates,
+		SchemaSyndicateMembers,
+		SchemaSyndicateInvites,
+		SchemaSyndicateInviteTokens,
+	}
+	if cfg == nil {
+		logging.Error("❌ config is nil — did config.Init() run before InitDB?")
+		panic("config not ready")
+	}
+
+	for _, stmt := range schemas {
+		if _, err := db.Exec(stmt); err != nil {
+			log.Fatalf("❌ Failed to apply schema: %v", err)
+		}
+	}
+
+	return db
+}