Bersihkan 18 file sampah AI + aturan gitignore file bantu AI (taruh di tmp/)

.gitignore

@@ -37,6 +37,17 @@ migrate_working_dir/
 lib/config.dart
 supabse.txt
 
+# File bantu AI (script cek/debug sekali pakai) — JANGAN commit
+# Taruh di D:\HomeLabs\tmp\ (tidak masuk repo manapun).
+# Dilarang menaruh *.py / check_* / fix_* / test_syntax* / *.bak / *.tmp
+# di root project atau lib/.
+*_ai_helper.py
+check_*.py
+fix_*.py
+test_syntax*.py
+*.bak
+*.orig
+
 # Symbolication related
 app.*.symbols