Feature: Sprint31 — 9 Features merged (Streak, Ausgaben, KI-Tierarzt, Rückrufe, Adoption, Vet+Befunde, Hundepass, Playdate, Rassenerkennung)

- Trainings-Streak: streak.py, DB training_streaks, Scheduler 19:00, Widget in welcome.js, Ping in uebungen.js
- Ausgaben-Tracker: expenses.py, expenses.js, DB expenses-Tabelle
- KI-Tierarztfragen: ki.py /tierarzt, health.js Button+Modal, DB ki_tierarzt_log
- Rückruf-Alarm: recalls.py, recalls.js, DB feed_recalls, Scheduler 08:00 RASFF
- Adoption: adoption.py, adoption.js, DB adoption_cache
- Tierarzt-Favorit + Befunde: tieraerzte.py /my-favorite+/favorite, health_docs.py, health.js, api.js, DB favorite_vets+health_documents
- Digitaler Hundepass: passport.py, dog-profile.js, main.py /pass/{token}, DB vaccinations+medications+dog_passport_meta+passport_shares, requirements.txt fpdf2
- Playdate-Matching: playdate.py, playdate.js, DB playdate_listings+playdate_requests
- Rassen-Erkennung: ki.py /rasse-erkennung (Claude Vision), dog-profile.js+wiki.js, CSS .rasse-result-card, DB ki_rasse_log

backend/static/js/pages/uebungen.js

@@ -1747,6 +1747,16 @@ window.Page_uebungen = (() => {
         _closeModal();
         if (!resp) { UI.toast.error('Speichern fehlgeschlagen.'); return; }
 
+        // Streak aktualisieren — fire-and-forget, Toast bei neuem Streak-Rekord
+        API.post(`/streak/${body.dog_id}/ping`).then(streak => {
+          if (!streak) return;
+          if (streak.current_streak > 1 && streak.current_streak === streak.longest_streak) {
+            setTimeout(() => UI.toast.success(`🔥 Neuer Rekord! ${streak.current_streak} Tage in Folge trainiert!`), 1500);
+          } else if (streak.current_streak > 1) {
+            setTimeout(() => UI.toast.info(`🔥 Streak: ${streak.current_streak} Tage in Folge!`), 1500);
+          }
+        }).catch(() => {});
+
         if (resp.ist_top) {
           UI.toast.success('🎉 Top-Training! Das war eine eurer besten Einheiten.');
         } else {