Add checkout snapshot

backend/src/main/resources/db/migration/V5__password_reset_and_loyalty_points.sql

@@ -0,0 +1,25 @@
+CREATE TABLE IF NOT EXISTS passwordResetToken (
+    id BIGINT AUTO_INCREMENT PRIMARY KEY,
+    userId BIGINT NOT NULL,
+    tokenHash VARCHAR(64) NOT NULL,
+    expiresAt DATETIME NOT NULL,
+    usedAt DATETIME NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT uq_password_reset_token_hash UNIQUE (tokenHash),
+    CONSTRAINT fk_password_reset_token_user FOREIGN KEY (userId) REFERENCES users(id) ON DELETE CASCADE
+);
+
+CREATE INDEX idx_password_reset_token_user ON passwordResetToken(userId);
+CREATE INDEX idx_password_reset_token_expires ON passwordResetToken(expiresAt);
+
+ALTER TABLE sale
+    ADD COLUMN pointsUsed INT NOT NULL DEFAULT 0,
+    ADD COLUMN loyaltyDiscountAmount DECIMAL(10, 2) NOT NULL DEFAULT 0.00;
+
+ALTER TABLE cart
+    ADD COLUMN pointsApplied BOOLEAN NOT NULL DEFAULT FALSE,
+    ADD COLUMN pointsDiscountAmount DECIMAL(10, 2) NOT NULL DEFAULT 0.00,
+    ADD COLUMN checkoutPending BOOLEAN NOT NULL DEFAULT FALSE,
+    ADD COLUMN checkoutAmount DECIMAL(10, 2),
+    ADD COLUMN checkoutStartedAt DATETIME,
+    ADD COLUMN checkoutPaymentIntentId VARCHAR(255);