feat: T4 wave 5 - colony end cleanup, withdrawal chain, next steps, inspection takeover UI

- Colony end releases the queen in the same transaction; open
  suggestions become obsolete and a CLEANUP suggestion lists open
  tasks and the queen; apply-cleanup validates evidence and blocks
  reactivated colonies
- Withdrawal chain: plausibility warnings on harvest and bottling,
  conflict notifications also when a treatment is entered or corrected
  after the harvest (naming bottled lots), withdrawal spans in the
  calendar and M365 sync, Berlin-day end events
- Next 3 steps per colony and the "Heute" endpoint with ranking and an
  explicit merge table by intent
- Inspection-triggered rule suggestions follow the colony's latest
  inspection (resolve when the finding is gone, refresh when it stays)
- Frontend: colony card takeover in the inspection form, feed status as
  condition, occupied frames 0-40; legacy offline entries keep syncing
- Notifications and preferences are deleted with their user

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

ApiCore-Backend/prisma/schema.prisma

@@ -1391,7 +1391,7 @@ enum NotificationCategory {
 model Notification {
   id                  String               @id @default(cuid())
   userId              String
-  user                User                 @relation(fields: [userId], references: [id])
+  user                User                 @relation(fields: [userId], references: [id], onDelete: Cascade)
   priority            NotificationPriority
   category            NotificationCategory
   message             String
@@ -1410,7 +1410,7 @@ model Notification {
 // Einstellungen je Nutzer; Standard beim ersten Lesen angelegt.
 model NotificationPreference {
   userId             String                 @id
-  user               User                   @relation(fields: [userId], references: [id])
+  user               User                   @relation(fields: [userId], references: [id], onDelete: Cascade)
   taskDueEnabled     Boolean                @default(true)
   digestEnabled      Boolean                @default(true)
   digestTime         String                 @default("06:30")