Add Tiers and Game Prize

migrations/000048_create_customer_points_table.up.sql

@@ -0,0 +1,22 @@
+CREATE TABLE customer_points (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    customer_id UUID NOT NULL,
+    balance BIGINT DEFAULT 0 NOT NULL,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+    
+    CONSTRAINT fk_customer_points_customer
+        FOREIGN KEY (customer_id)
+        REFERENCES customers(id)
+        ON DELETE CASCADE,
+    
+    CONSTRAINT chk_customer_points_balance_non_negative
+        CHECK (balance >= 0)
+);
+
+-- Create indexes
+CREATE INDEX idx_customer_points_customer_id ON customer_points(customer_id);
+CREATE INDEX idx_customer_points_updated_at ON customer_points(updated_at);
+
+-- Create unique constraint to ensure one point record per customer
+CREATE UNIQUE INDEX idx_customer_points_unique_customer ON customer_points(customer_id);