cleanup: remove import files and restore koneksi.php to production

.gitignore

@@ -5,3 +5,5 @@ Thumbs.db
 *.log
 *.zip
 .env
+*_dump.sql
+

kemiskinan/koneksi.php

@@ -15,9 +15,10 @@ if ($conn->connect_errno) {
 }
 
 if (!$conn->select_db($dbname)) {
-    die(
-        "DEBUG: DB=$dbname | ERROR=" . $conn->error
-    );
+    if (!$conn->query("CREATE DATABASE IF NOT EXISTS `$dbname`") || !$conn->select_db($dbname)) {
+        http_response_code(500);
+        die("Database Kemiskinan belum tersedia. Buat database `$dbname` atau gunakan akun yang memiliki izin CREATE DATABASE.");
+    }
 }
 
 $conn->set_charset('utf8mb4');