Fix Medical page header to match other pages, avoid Turbopack bug

- Header: align with Growth page pattern (p-4, back button left)
- Link: / → /menu
- Rename: Medical 💊 → Medical
- Fix: TT/Td → Tetanus and adult diphtheria (Td) to avoid Turbopack SWC parser error

Note: Apply fixes one change at a time between builds to avoid Turbopack caching issues.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/app/medical/page.tsx

@@ -61,7 +61,7 @@ const IAP_SCHEDULE = [
   { name: "Vitamin A-2", weeks: 96 },
   { name: "OPV-5", weeks: 96 },
   { name: "DPT-Booster-2", weeks: 208 }, // 4 years
-  { name: "TT/Td", weeks: 208 },
+  { name: "Tetanus and adult diphtheria (Td)", weeks: 208 },
 ];
 
 function calculateDueDate(birthDate: string, weeks: number): string {
@@ -409,10 +409,10 @@ const SUPPLEMENTS = [
 
   return (
     <div className="min-h-screen bg-gradient-to-br from-rose-50 to-amber-50">
-      <div className="container mx-auto px-4 py-8">
-        <div className="flex justify-between items-center mb-6">
-          <h1 className="text-2xl font-bold">Medical 💊</h1>
-          <a href="/" className="text-rose-500">← Home</a>
+      <div className="p-4">
+        <div className="flex justify-between items-center">
+          <a href="/menu" className="p-2">←</a>
+          <h1 className="text-xl font-bold">Medical</h1>
         </div>
 
         <div className="flex gap-2 mb-6 overflow-x-auto">