initial commit

sql/migrations/001_add_bantuan_terakhir.sql

@@ -0,0 +1,12 @@
+-- Migration: Add bantuan_terakhir column to lokasi and populate from last_assisted_at
+-- Idempotent statements for MySQL
+
+ALTER TABLE lokasi ADD COLUMN IF NOT EXISTS bantuan_terakhir DATETIME NULL;
+
+-- Populate bantuan_terakhir for records that already have last_assisted_at
+UPDATE lokasi
+SET bantuan_terakhir = last_assisted_at
+WHERE bantuan_terakhir IS NULL AND last_assisted_at IS NOT NULL;
+
+-- Add index on assisted for performance (ignore error if exists)
+CREATE INDEX idx_lokasi_assisted ON lokasi (assisted);