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

frontend/src/i18n/de.json

@@ -98,8 +98,8 @@
     }
   },
   "form": {
-    "editEntry": "Eintrag bearbeiten",
-    "newEntry": "Neuer Eintrag",
+    "editEntry": "Medikament bearbeiten",
+    "newEntry": "Neues Medikament",
     "badge": "Packungen + lose Tabletten",
     "commercialName": "Handelsname",
     "genericName": "Wirkstoff",
@@ -226,7 +226,7 @@
     "pillWeight": "Tablettengewicht",
     "expiryDate": "Ablaufdatum",
     "intakeSchedule": "Einnahmeplan",
-    "coverageStatus": "Reichweite",
+    "coverageStatus": "Bestand",
     "daysLeft": "Tage übrig",
     "runsOut": "Aufgebraucht",
     "notes": "Notizen",
@@ -383,5 +383,21 @@
     "importError": "Daten konnten nicht importiert werden",
     "invalidFile": "Ungültiges Dateiformat. Bitte wähle eine gültige MedAssist-Exportdatei.",
     "downloadFilename": "medassist-export"
+  },
+  "refill": {
+    "title": "Nachfüllen",
+    "packs": "Packungen hinzufügen",
+    "loosePills": "Lose Tabletten hinzufügen",
+    "pillsPerPack": "1 Packung = {{count}} Tabletten",
+    "addToStock": "Zum Bestand hinzufügen",
+    "adding": "Wird hinzugefügt...",
+    "success": "{{pills}} Tabletten zum Bestand hinzugefügt",
+    "history": "Nachfüll-Verlauf",
+    "noHistory": "Noch keine Nachfüllungen erfasst",
+    "packsAdded": "{{count}} Packung",
+    "packsAdded_other": "{{count}} Packungen",
+    "pillsAdded": "{{count}} Tablette",
+    "pillsAdded_other": "{{count}} Tabletten",
+    "button": "Nachfüllen"
   }
 }

frontend/src/i18n/en.json

@@ -100,8 +100,8 @@
     }
   },
   "form": {
-    "editEntry": "Edit entry",
-    "newEntry": "New entry",
+    "editEntry": "Edit medication",
+    "newEntry": "New medication",
     "badge": "Packs + loose pills",
     "commercialName": "Commercial Name",
     "genericName": "Generic Name",
@@ -385,5 +385,21 @@
     "importError": "Failed to import data",
     "invalidFile": "Invalid file format. Please select a valid MedAssist export file.",
     "downloadFilename": "medassist-export"
+  },
+  "refill": {
+    "title": "Refill",
+    "packs": "Packs to add",
+    "loosePills": "Loose pills to add",
+    "pillsPerPack": "1 pack = {{count}} pills",
+    "addToStock": "Add to Stock",
+    "adding": "Adding...",
+    "success": "Added {{pills}} pills to stock",
+    "history": "Refill History",
+    "noHistory": "No refills recorded yet",
+    "packsAdded": "{{count}} pack",
+    "packsAdded_other": "{{count}} packs",
+    "pillsAdded": "{{count}} pill",
+    "pillsAdded_other": "{{count}} pills",
+    "button": "Refill"
   }
 }