KI-AGENT: Ergänze wiederholende Termine für Kalender und Plantafel

backend/db/migrations/0039_events_repeat_interval.sql

@@ -0,0 +1 @@
+ALTER TABLE "events" ADD COLUMN "repeatInterval" text DEFAULT 'Keine Wiederholung' NOT NULL;

backend/db/migrations/meta/_journal.json

@@ -274,6 +274,13 @@
       "when": 1779158400000,
       "tag": "0038_events_state",
       "breakpoints": true
+    },
+    {
+      "idx": 39,
+      "version": "7",
+      "when": 1779840000000,
+      "tag": "0039_events_repeat_interval",
+      "breakpoints": true
     }
   ]
 }