feat: improve medication detail modal layout and display (#258)

Widen detail modal on desktop (711px, up from 500px) with max-width
override to beat modals-base.css specificity. Limit fullscreen mode
to actual phones (<=500px) instead of all screens <=900px. Move intake
schedule section before prescription details. Show per-intake takenBy
person and bell icon with proper warning color. Right-align time in
schedule rows. Move notes icon after label text. Replace emoji bell
icons with Lucide Bell component in SchedulePage and MobileEditModal.
Add common.on/common.off i18n keys.

Closes #254

frontend/src/i18n/de.json

@@ -153,6 +153,7 @@
   },
   "form": {
     "editEntry": "Bearbeiten",
+    "editEntryWithName": "Bearbeiten: {{name}}",
     "viewEntry": "Ansehen",
     "newEntry": "Neues Medikament",
     "badge": "Packungen + lose Tabletten",
@@ -462,7 +463,9 @@
     "pillsTotal": "{{count}} Tabletten gesamt",
     "pillsTotal_one": "{{count}} Tablette gesamt",
     "pillsTotal_other": "{{count}} Tabletten gesamt",
-    "max": "max"
+    "max": "max",
+    "on": "An",
+    "off": "Aus"
   },
   "share": {
     "button": "Teilen",