feat: theme dropdown with system preference and comprehensive bottle-type fixes (#138)

- Replace dark/light toggle with Light/Dark/System dropdown menu
- System theme follows OS prefers-color-scheme setting
- Apply theme dropdown to shared schedule page
- Fix 7 packageType (bottle) bugs across stock calc, share, refills, export/import
- Fix planner bottle-type stock calculation and display
- Fix dailyRate double-counting with per-intake takenBy
- Fix About modal update check stale caching
- Fix intake reminder past-intake seeding and push title
- Fix phantom DB path in drizzle.config.ts
- Fix mobile dose field visibility
- Make medication name clickable in dashboard reminder bar
- Improve planner checkbox UX with inline tooltip
- Add 20+ new tests covering all fixes

backend/src/i18n/translations.ts

@@ -156,7 +156,7 @@ const translations: Record<Language, TranslationKeys> = {
 		push: {
 			stockTitle: "MedAssist-ng: 1 Medication Running Low",
 			stockTitleMultiple: "MedAssist-ng: {count} Medications Running Low",
-			intakeTitle: "💊 Medication Reminder in {minutes} min",
+			intakeTitle: "💊 Reminder: Medication intake in {minutes} min",
 			pillsLeft: "{count} pills",
 			daysLeft: "{count} days left",
 			pillsAt: "{count} pills at {time}",
@@ -210,7 +210,7 @@ const translations: Record<Language, TranslationKeys> = {
 		push: {
 			stockTitle: "MedAssist-ng: 1 Medikament wird knapp",
 			stockTitleMultiple: "MedAssist-ng: {count} Medikamente werden knapp",
-			intakeTitle: "💊 Einnahme-Erinnerung in {minutes} Min.",
+			intakeTitle: "💊 Erinnerung: Medikamenteneinnahme in {minutes} Min.",
 			pillsLeft: "{count} Tabletten",
 			daysLeft: "{count} Tage übrig",
 			pillsAt: "{count} Tabletten um {time}",