Weekdays that fit the weather columns, the top bar's own abbreviation, tile texts that fit, and a check that measures them

- The CYD's weather columns hold two letters beside the icon: every language has its own two-letter days (the CLDR's
  short width, Polish nd pn wt); French mar became nar there. check fails on a longer one.
- The top bar takes the language's abbreviation (sam. 19 sept., Sa., 19. Sept.), English keeps Sa 19 Sep.
- The editor's clock and date follow the screens: 7:05 PM in the top bar, 7:05 on the clock card.
- A long weather word ends in an ellipsis before the days.
- Tile lines that were cut on a screen are shorter (Zum Öffnen, Ouvrir, Otwórz, Sin imagen, ...); check measures
  them with the screens' font against the tile width of both boards.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

screen_manager/translations/de.json

@@ -142,7 +142,7 @@
       "hours_minutes": "{h} Std. {m}"
     },
     "tile": {
-      "tap_to_open": "Zum Öffnen tippen",
+      "tap_to_open": "Zum Öffnen",
       "page": "Seite {n}",
       "refused": "Abgelehnt",
       "command_sent": "Befehl gesendet...",
@@ -214,7 +214,7 @@
     },
     "media": {
       "muted": "Stumm",
-      "not_playing": "Keine Wiedergabe",
+      "not_playing": "Nichts läuft",
       "loading": "Wird geladen"
     },
     "timer": {
@@ -245,7 +245,7 @@
       "loading": "Bild wird geladen",
       "live": "Live",
       "recording": "Aufnahme",
-      "tap_to_view": "Zum Ansehen tippen",
+      "tap_to_view": "Ansehen",
       "no_image_yet": "Noch kein Bild"
     },
     "calibration": {