feat: T4 wave 3 - notifications per user, suggestions API, varroa bands, split/queen events

- Schema III: per-user notifications (broadcast fan-out migration,
  category, link, requiredPermissions filter), notification preferences
  and settings endpoints, calendar withdrawal switch, occupiedFrames
- Suggestions API: list/summary with permission visibility and paging,
  accept/dismiss/reopen incl. bulk, SuggestionView on all responses
- Varroa traffic light by season and method, young colonies, treatment
  effect window, sample-based percentage; shared withdrawal-window helper
  on Berlin calendar days; GET /varroa-measurements/thresholds
- ColonySplit and QueenAssigned domain events with calendar and webhook
  handlers
- Outbox claims compare against now() rounded to timestamp(3); fixes the
  flaky e2e claims of rows written with SQL now()

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

ApiCore-Backend/prisma/migrations/20261014100500_t4_notification_fanout/migration.sql

@@ -0,0 +1,33 @@
+-- T4 migration 8/n: every notification belongs to exactly one user. A
+-- broadcast (userId IS NULL) is copied once per active user with its read
+-- flag and creation time, then the original is deleted. After that userId is
+-- NOT NULL; dedupeKey ("<prefix>:<userId>") makes repeated writes harmless.
+-- Check afterwards: SELECT count(*) FROM "Notification" WHERE "userId" IS NULL;
+-- must be 0 (the SET NOT NULL below fails otherwise).
+
+-- DropForeignKey (was ON DELETE SET NULL, impossible for a NOT NULL column)
+ALTER TABLE "Notification" DROP CONSTRAINT "Notification_userId_fkey";
+
+-- AlterTable
+ALTER TABLE "Notification" ADD COLUMN     "dedupeKey" TEXT;
+
+-- Fan-out of the broadcasts to ALL active users (isActive only, no role or
+-- permission filter): a broadcast was visible to every user before, so the
+-- copies keep exactly that visibility. With no active user, broadcasts are
+-- dropped. The copies get no dedupeKey and the default requiredPermissions.
+INSERT INTO "Notification" ("id", "userId", "priority", "message", "relatedType", "relatedId", "read", "createdAt")
+SELECT gen_random_uuid()::text, u."id", n."priority", n."message", n."relatedType", n."relatedId", n."read", n."createdAt"
+FROM "Notification" n
+CROSS JOIN "User" u
+WHERE n."userId" IS NULL AND u."isActive" = true;
+
+DELETE FROM "Notification" WHERE "userId" IS NULL;
+
+-- AlterTable
+ALTER TABLE "Notification" ALTER COLUMN "userId" SET NOT NULL;
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Notification_dedupeKey_key" ON "Notification"("dedupeKey");
+
+-- AddForeignKey
+ALTER TABLE "Notification" ADD CONSTRAINT "Notification_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

ApiCore-Backend/prisma/migrations/20261014100600_t4_calendar_withdrawal/migration.sql

@@ -0,0 +1,5 @@
+-- T4 migration 9/n: switch for the withdrawal-period entries of the calendar
+-- sync (on by default, like the other sources).
+
+-- AlterTable
+ALTER TABLE "CalendarSyncSettings" ADD COLUMN     "syncWithdrawal" BOOLEAN NOT NULL DEFAULT true;

ApiCore-Backend/prisma/migrations/20261014100700_t4_occupied_frames/migration.sql

@@ -0,0 +1,11 @@
+-- T4 migration 10/n: Colony.occupiedFrames, the number of occupied frames
+-- (0-40, same unit and bounds as Inspection.colonyStrength). Colony.strength
+-- (scale 1-10) is left untouched, nothing is converted.
+--
+-- Check BEFORE the deploy (hits must be clarified with the owner, never cut):
+--   SELECT count(*) FROM "Inspection" WHERE "colonyStrength" > 40;
+
+-- AlterTable
+ALTER TABLE "Colony" ADD COLUMN     "occupiedFrames" INTEGER;
+
+ALTER TABLE "Colony" ADD CONSTRAINT "Colony_occupiedFrames_range" CHECK ("occupiedFrames" BETWEEN 0 AND 40);

ApiCore-Backend/prisma/migrations/20261014100800_t4_notification_settings/migration.sql

@@ -0,0 +1,39 @@
+-- T4 migration 11/n (part category, link, permissions, preferences). Runs
+-- after migration 8. category of the old rows: job failures carry
+-- relatedType 'JobRun' (and rows without relatedType are system messages) ->
+-- SYSTEM, everything else -> SUGGESTION. Only then NOT NULL.
+
+-- CreateEnum
+CREATE TYPE "NotificationCategory" AS ENUM ('TASK_DUE', 'DIGEST', 'SUGGESTION', 'WITHDRAWAL', 'SEASON', 'SYSTEM');
+
+-- AlterTable
+ALTER TABLE "Notification" ADD COLUMN     "category" "NotificationCategory",
+ADD COLUMN     "link" TEXT,
+ADD COLUMN     "requiredPermissions" TEXT[] DEFAULT ARRAY[]::TEXT[];
+
+UPDATE "Notification"
+SET "category" = CASE
+  WHEN "relatedType" = 'JobRun' OR "relatedType" IS NULL THEN 'SYSTEM'::"NotificationCategory"
+  ELSE 'SUGGESTION'::"NotificationCategory"
+END;
+
+ALTER TABLE "Notification" ALTER COLUMN "category" SET NOT NULL;
+
+-- CreateTable
+CREATE TABLE "NotificationPreference" (
+    "userId" TEXT NOT NULL,
+    "taskDueEnabled" BOOLEAN NOT NULL DEFAULT true,
+    "digestEnabled" BOOLEAN NOT NULL DEFAULT true,
+    "digestTime" TEXT NOT NULL DEFAULT '06:30',
+    "quietFrom" TEXT DEFAULT '21:00',
+    "quietUntil" TEXT DEFAULT '06:30',
+    "telegramEnabled" BOOLEAN NOT NULL DEFAULT false,
+    "telegramCategories" "NotificationCategory"[] DEFAULT ARRAY['TASK_DUE', 'DIGEST']::"NotificationCategory"[],
+    "telegramDetail" BOOLEAN NOT NULL DEFAULT true,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "NotificationPreference_pkey" PRIMARY KEY ("userId")
+);
+
+-- AddForeignKey
+ALTER TABLE "NotificationPreference" ADD CONSTRAINT "NotificationPreference_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User"("id") ON DELETE RESTRICT ON UPDATE CASCADE;