feat: T4 wave 4 - rules suggest, takeover, chains, autopilot A1-A3, suggestions page, varroa bands UI

- Automation rules propose suggestions instead of creating tasks;
  notify per rule config; corrected varroa measurements refresh or
  resolve their suggestion
- Inspection values can be taken over into the colony card
  (occupiedFrames 0-40, strength deprecated); warning counts use the
  same visibility rule as the notification list
- Biotech chains: swarm check after queen cells, queen acceptance
  check, split schedules (raise own, queen cell, queen)
- Season autopilot core with A1 inspection due, A2 varroa measurement,
  A3 recheck after treatment; colony sync and daily step
- Frontend: suggestions page with groups, bulk accept, undo, paging,
  focus management and permission gating
- Frontend: varroa traffic light from seasonal bands, sample size,
  one range request for the colony chart
- Notifications: mark-read answers 404 for rows the user may no
  longer see

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

ApiCore-Backend/src/varroa/dto/varroa-thresholds.query.ts

@@ -26,4 +26,23 @@ export class VarroaThresholdsQuery {
   @IsString()
   @Matches(DAY_PATTERN, { message: 'date muss ein Tag (JJJJ-MM-TT) sein' })
   date?: string;
+
+  @ApiPropertyOptional({
+    description:
+      'Range form: first day (JJJJ-MM-TT); needs `to`, excludes `date`',
+    example: '2025-01-01',
+  })
+  @IsOptional()
+  @IsString()
+  @Matches(DAY_PATTERN, { message: 'from muss ein Tag (JJJJ-MM-TT) sein' })
+  from?: string;
+
+  @ApiPropertyOptional({
+    description: 'Range form: last day (JJJJ-MM-TT), at most 731 days',
+    example: '2026-12-31',
+  })
+  @IsOptional()
+  @IsString()
+  @Matches(DAY_PATTERN, { message: 'to muss ein Tag (JJJJ-MM-TT) sein' })
+  to?: string;
 }