feat: "Heute" start page with one next step, clear task states and motion levels

Start page (AuDHD-oriented, per the agreed "Heute zuerst" layout):
- One highlighted next step: started work first (easy re-entry after an
  interruption), then overdue, due today, then urgent undated tasks.
  Primary action "Erledigt", secondary "Beginnen", link to the related
  colony/apiary/queen.
- "Außerdem heute": at most five further tasks with a large honey-cell
  checkbox; undated automatic suggestions are included so a queenless
  colony does not sit unseen in the full list.
- Completing is the one authored motion moment: the cell fills, the tick
  draws, the row folds away and the next step arrives with a short focus
  pull. Every completion can be undone from the toast (10 s), restoring
  the previous status.
- Status is shown as icon plus word (never colour alone); tasks created by
  automation carry a "Vorschlag" badge, recurring and inspection tasks
  their own - a suggestion never looks like work already done.
- Friendly empty, loading and error states; key figures moved into a
  compact overview below; overdue tasks are no longer listed twice.

Motion: per-device setting Voll / Dezent / Aus in the profile (default
Voll); the OS reduce-motion setting always lowers Voll to Dezent.
New 44 px "touch" button size for gloves at the apiary; themed text
selection and caret.

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

ApiCore-Frontend/src/app/providers.tsx

@@ -1,12 +1,17 @@
 "use client";
 
 import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
-import { useState } from "react";
+import { useEffect, useState } from "react";
 import { AuthProvider } from "@/lib/auth/auth-context";
+import { applyMotionLevel, readMotionLevel } from "@/lib/motion/motion-preference";
 
 export function Providers({ children }: { children: React.ReactNode }) {
   const [queryClient] = useState(() => new QueryClient());
 
+  useEffect(() => {
+    applyMotionLevel(readMotionLevel());
+  }, []);
+
   return (
     <QueryClientProvider client={queryClient}>
       <AuthProvider>{children}</AuthProvider>