-- Subscription plans v2: per-plan allowed-time windows (tariff bridge), per-subscription -- car quantity, and a site toggle to reserve subscriber spots in the occupancy count. -- All additive ALTER ADD COLUMN — backward-compatible (existing rows take the defaults: -- timeframes null = 24/7, quantity 1, reserve off). SQLite ADD COLUMN is in-place. ALTER TABLE `subscription_plans` ADD `timeframes` text;--> statement-breakpoint ALTER TABLE `subscriptions` ADD `quantity` integer DEFAULT 1 NOT NULL;--> statement-breakpoint ALTER TABLE `site_config` ADD `reserve_subscriber_spots` integer DEFAULT 0 NOT NULL;