Update migrated js to ts and shadcn

src/locales/en.ts

@@ -0,0 +1,83 @@
+// English translations
+export const en = {
+  // App header and navigation
+  appTitle: "Medication Plan Assistant",
+  appSubtitle: "Simulation for Lisdexamfetamine (LDX) and d-Amphetamine (d-amph)",
+
+  // Chart view buttons
+  dAmphetamine: "d-Amphetamine",
+  lisdexamfetamine: "Lisdexamfetamine",
+  both: "Both",
+
+  // Language selector
+  language: "Language",
+  english: "English",
+  german: "Deutsch",
+
+  // Dose Schedule
+  myPlan: "My Plan",
+  morning: "Morning",
+  midday: "Midday",
+  afternoon: "Afternoon",
+  evening: "Evening",
+  night: "Night",
+
+  // Deviations
+  deviationsFromPlan: "Deviations from Plan",
+  addDeviation: "Add Deviation",
+  day: "Day",
+  additional: "Additional",
+  additionalTooltip: "Mark this if it was an extra dose instead of a replacement for a planned one.",
+
+  // Suggestions
+  whatIf: "What if?",
+  suggestion: "Suggestion",
+  instead: "instead",
+  at: "at",
+  applySuggestion: "Apply suggestion as deviation",
+  noSignificantCorrection: "No significant correction necessary.",
+  noSuitableNextDose: "No suitable next dose found for correction.",
+
+  // Chart
+  concentration: "Concentration (ng/ml)",
+  hour: "h",
+  min: "Min",
+  max: "Max",
+
+  // Settings
+  advancedSettings: "Advanced Settings",
+  show24hTimeAxis: "Show 24h time axis",
+  simulationDuration: "Simulation Duration",
+  days: "Days",
+  displayedDays: "Displayed Days",
+  yAxisRange: "Y-Axis Range",
+  yAxisRangeAutoButton: "A",
+  yAxisRangeAutoButtonTitle: "Determine range automatically based on data range",
+  auto: "Auto",
+  therapeuticRange: "Therapeutic Range",
+  dAmphetamineParameters: "d-Amphetamine Parameters",
+  halfLife: "Half-life",
+  hours: "h",
+  lisdexamfetamineParameters: "Lisdexamfetamine Parameters",
+  conversionHalfLife: "Conversion Half-life",
+  absorptionRate: "Absorption Rate",
+  faster: "(faster >)",
+  resetAllSettings: "Reset All Settings",
+
+  // Units
+  mg: "mg",
+  ngml: "ng/ml",
+
+  // Reset confirmation
+  resetConfirmation: "Are you sure you want to reset all settings to default values? This cannot be undone.",
+
+  // Footer disclaimer
+  importantNote: "Important Notice",
+  disclaimer: "This tool is for illustration and information purposes only. It is not a medical device and does not replace consultation with a doctor or pharmacist. All calculations are simulations based on general pharmacokinetic models and may differ significantly from individual factors. Please consult your treating physician before making adjustments to your medication.",
+
+  // Field validation
+  errorNumberRequired: "Please enter a valid number.",
+  errorTimeRequired: "Please enter a valid time."
+};
+
+export default en;