feat: Add Medication Refill feature with mobile UI improvements (#30)

* feat: Add Medication Refill feature with UI improvements

- Add refill functionality to medications (add packs/loose pills)
- Add refill API endpoint with history tracking
- Add refill section in edit forms (desktop & mobile)
- Add refill modal in medication detail view
- Add refill history display with expand/collapse
- Add schedule lightbox for clicking medication images
- Improve button styling with primary/info/success classes
- Move '+ New entry' button to medication list header
- Lightbox size: 50% desktop, 90% mobile
- Update selectedMed sync after stock changes
- Migrate from schema-sql.ts to Drizzle Kit migrations

* fix: Improve mobile tooltips and refill modal layout

- Center tooltips on screen for mobile devices (fixed position)
- Close tooltips automatically when scrolling on touch devices
- Use click-based tooltip activation instead of hover on mobile
- Fix refill modal buttons to display in two rows on mobile

backend/drizzle/0000_init.sql

@@ -0,0 +1,112 @@
+CREATE TABLE `dose_tracking` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`user_id` integer NOT NULL,
+	`dose_id` text(255) NOT NULL,
+	`taken_at` integer DEFAULT (strftime('%s','now')) NOT NULL,
+	`marked_by` text(100),
+	`dismissed` integer DEFAULT false NOT NULL,
+	FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON UPDATE no action ON DELETE cascade
+);
+--> statement-breakpoint
+CREATE TABLE `medications` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`user_id` integer NOT NULL,
+	`name` text(100) NOT NULL,
+	`generic_name` text(100),
+	`taken_by_json` text DEFAULT '[]' NOT NULL,
+	`pack_count` integer DEFAULT 1 NOT NULL,
+	`blisters_per_pack` integer DEFAULT 1 NOT NULL,
+	`pills_per_blister` integer DEFAULT 1 NOT NULL,
+	`loose_tablets` integer DEFAULT 0 NOT NULL,
+	`pill_weight_mg` integer,
+	`usage_json` text DEFAULT '[]' NOT NULL,
+	`every_json` text DEFAULT '[]' NOT NULL,
+	`start_json` text DEFAULT '[]' NOT NULL,
+	`image_url` text,
+	`expiry_date` text,
+	`notes` text,
+	`intake_reminders_enabled` integer DEFAULT false NOT NULL,
+	`updated_at` integer DEFAULT CURRENT_TIMESTAMP NOT NULL,
+	FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON UPDATE no action ON DELETE cascade
+);
+--> statement-breakpoint
+CREATE TABLE `refill_history` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`medication_id` integer NOT NULL,
+	`user_id` integer NOT NULL,
+	`packs_added` integer DEFAULT 0 NOT NULL,
+	`loose_pills_added` integer DEFAULT 0 NOT NULL,
+	`refill_date` integer DEFAULT (strftime('%s','now')) NOT NULL,
+	FOREIGN KEY (`medication_id`) REFERENCES `medications`(`id`) ON UPDATE no action ON DELETE cascade,
+	FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON UPDATE no action ON DELETE cascade
+);
+--> statement-breakpoint
+CREATE TABLE `refresh_tokens` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`user_id` integer NOT NULL,
+	`token_id` text(255) NOT NULL,
+	`expires_at` integer NOT NULL,
+	`rotated_at` integer,
+	`revoked` integer DEFAULT false NOT NULL,
+	`created_at` integer DEFAULT CURRENT_TIMESTAMP NOT NULL,
+	FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON UPDATE no action ON DELETE cascade
+);
+--> statement-breakpoint
+CREATE UNIQUE INDEX `refresh_tokens_token_id_unique` ON `refresh_tokens` (`token_id`);--> statement-breakpoint
+CREATE TABLE `share_tokens` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`user_id` integer NOT NULL,
+	`token` text(64) NOT NULL,
+	`taken_by` text(100) NOT NULL,
+	`schedule_days` integer DEFAULT 30 NOT NULL,
+	`created_at` integer DEFAULT CURRENT_TIMESTAMP NOT NULL,
+	`expires_at` integer,
+	FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON UPDATE no action ON DELETE cascade
+);
+--> statement-breakpoint
+CREATE UNIQUE INDEX `share_tokens_token_unique` ON `share_tokens` (`token`);--> statement-breakpoint
+CREATE TABLE `user_settings` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`user_id` integer NOT NULL,
+	`email_enabled` integer DEFAULT false NOT NULL,
+	`notification_email` text,
+	`email_stock_reminders` integer DEFAULT true NOT NULL,
+	`email_intake_reminders` integer DEFAULT true NOT NULL,
+	`shoutrrr_enabled` integer DEFAULT false NOT NULL,
+	`shoutrrr_url` text,
+	`shoutrrr_stock_reminders` integer DEFAULT true NOT NULL,
+	`shoutrrr_intake_reminders` integer DEFAULT true NOT NULL,
+	`reminder_days_before` integer DEFAULT 7 NOT NULL,
+	`repeat_daily_reminders` integer DEFAULT false NOT NULL,
+	`skip_reminders_for_taken_doses` integer DEFAULT false NOT NULL,
+	`repeat_reminders_enabled` integer DEFAULT false NOT NULL,
+	`reminder_repeat_interval_minutes` integer DEFAULT 30 NOT NULL,
+	`max_nagging_reminders` integer DEFAULT 5 NOT NULL,
+	`low_stock_days` integer DEFAULT 30 NOT NULL,
+	`normal_stock_days` integer DEFAULT 90 NOT NULL,
+	`high_stock_days` integer DEFAULT 180 NOT NULL,
+	`expiry_warning_days` integer DEFAULT 90 NOT NULL,
+	`language` text(10) DEFAULT 'en' NOT NULL,
+	`stock_calculation_mode` text(20) DEFAULT 'automatic' NOT NULL,
+	`last_auto_email_sent` text,
+	`last_notification_type` text,
+	`last_notification_channel` text,
+	`updated_at` integer DEFAULT CURRENT_TIMESTAMP NOT NULL,
+	FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON UPDATE no action ON DELETE cascade
+);
+--> statement-breakpoint
+CREATE UNIQUE INDEX `user_settings_user_id_unique` ON `user_settings` (`user_id`);--> statement-breakpoint
+CREATE TABLE `users` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`username` text(100) NOT NULL,
+	`password_hash` text(255),
+	`avatar_url` text(255),
+	`auth_provider` text(50) DEFAULT 'local' NOT NULL,
+	`oidc_subject` text(255),
+	`is_active` integer DEFAULT true NOT NULL,
+	`last_login_at` integer,
+	`created_at` integer DEFAULT CURRENT_TIMESTAMP NOT NULL,
+	`updated_at` integer DEFAULT CURRENT_TIMESTAMP NOT NULL
+);
+--> statement-breakpoint
+CREATE UNIQUE INDEX `users_username_unique` ON `users` (`username`);