chore: initial commit Dutra Store POS app

supabase/migrations/20240101_add_cancel_and_min_stock.sql

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+-- Migration: Add is_cancelled to sales and min_stock to products
+-- Run this in Supabase Dashboard > SQL Editor
+
+-- Add is_cancelled column to sales table
+ALTER TABLE sales
+  ADD COLUMN IF NOT EXISTS is_cancelled BOOLEAN DEFAULT false;
+
+-- Add min_stock column to products table
+ALTER TABLE products
+  ADD COLUMN IF NOT EXISTS min_stock INTEGER DEFAULT 5;
+
+-- Update existing products to have default min_stock if null
+UPDATE products
+  SET min_stock = 5
+  WHERE min_stock IS NULL;