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-Frontend/src/components/varroa/varroa-rate-light.spec.tsx

@@ -0,0 +1,54 @@
+import { describe, expect, it } from "vitest";
+import { render, screen } from "@testing-library/react";
+import { VarroaRateLight } from "./varroa-rate-light";
+import type { VarroaBands } from "@/lib/varroa/bands";
+
+const BANDS: VarroaBands = {
+  day: "2026-08-10",
+  bands: {
+    NATURAL_MITE_FALL: {
+      method: "NATURAL_MITE_FALL",
+      unit: "MITES_PER_DAY",
+      yellowFrom: 5,
+      redAbove: 10,
+      reason: "NATURAL_FALL_SEASON",
+      youngColony: false,
+    },
+  },
+  postTreatmentUntil: null,
+  active: true,
+};
+
+describe("VarroaRateLight", () => {
+  it("keeps one status element while the content changes", () => {
+    const { rerender } = render(<VarroaRateLight method="NATURAL_MITE_FALL" value={null} bands={BANDS} />);
+    const status = screen.getByRole("status");
+    expect(status).toHaveAttribute("aria-live", "polite");
+    expect(status).toBeEmptyDOMElement();
+
+    rerender(<VarroaRateLight method="NATURAL_MITE_FALL" value={12.4} bands={BANDS} />);
+    expect(screen.getByRole("status")).toBe(status);
+    expect(status).toHaveTextContent("12,4 Milben/Tag – Kritisch (Grenze 10, LWG)");
+
+    rerender(<VarroaRateLight method="NATURAL_MITE_FALL" value={3} bands={null} />);
+    expect(screen.getByRole("status")).toBe(status);
+    expect(status).toHaveTextContent(/^3,0 Milben\/Tag$/);
+    expect(screen.getAllByRole("status")).toHaveLength(1);
+  });
+
+  it("names every state in words, not by colour alone", () => {
+    const { rerender } = render(<VarroaRateLight method="NATURAL_MITE_FALL" value={1} bands={BANDS} />);
+    expect(screen.getByRole("status")).toHaveTextContent("Gut");
+    rerender(<VarroaRateLight method="NATURAL_MITE_FALL" value={6} bands={BANDS} />);
+    expect(screen.getByRole("status")).toHaveTextContent("Achtung");
+    rerender(
+      <VarroaRateLight method="NATURAL_MITE_FALL" value={6} bands={{ ...BANDS, postTreatmentUntil: "2026-08-16" }} />,
+    );
+    expect(screen.getByRole("status")).toHaveTextContent("Behandlungseffekt – Nachkontrolle ab 16.08.");
+  });
+
+  it("shows only the value for a method without a band", () => {
+    render(<VarroaRateLight method="POWDERED_SUGAR" value={2.4} bands={BANDS} />);
+    expect(screen.getByRole("status")).toHaveTextContent(/^2,4 %$/);
+  });
+});