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/index.html

@@ -158,6 +158,9 @@
       <div class="sidebar-item" data-page="notes">
         <svg class="ph-icon" aria-hidden="true"><use href="/icons/phosphor.svg#note-pencil"></use></svg> Notizblock
       </div>
+      <div class="sidebar-item" data-page="expenses">
+        <svg class="ph-icon" aria-hidden="true"><use href="/icons/phosphor.svg#receipt"></use></svg> Ausgaben
+      </div>
 
       <span class="sidebar-section-label">Entdecken</span>
       <div class="sidebar-item" data-page="map">
@@ -172,12 +175,18 @@
       <div class="sidebar-item" data-page="jobs">
         <svg class="ph-icon" aria-hidden="true"><use href="/icons/phosphor.svg#sparkle"></use></svg> Jobs
       </div>
+      <div class="sidebar-item" data-page="adoption">
+        <svg class="ph-icon" aria-hidden="true"><use href="/icons/phosphor.svg#heart"></use></svg> Adoption
+      </div>
 
       <span class="sidebar-section-label">Soziales</span>
       <div class="sidebar-item" data-page="friends">
         <svg class="ph-icon" aria-hidden="true"><use href="/icons/phosphor.svg#users"></use></svg> Freunde
         <span class="sidebar-item-badge" id="friends-badge" style="display:none">0</span>
       </div>
+      <div class="sidebar-item" data-page="playdate">
+        <svg class="ph-icon" aria-hidden="true"><use href="/icons/phosphor.svg#paw-print"></use></svg> Playdate
+      </div>
       <div class="sidebar-item" data-page="chat">
         <svg class="ph-icon" aria-hidden="true"><use href="/icons/phosphor.svg#chat-circle-dots"></use></svg> Nachrichten
         <span class="sidebar-item-badge" id="chat-badge" style="display:none">0</span>
@@ -189,6 +198,9 @@
         <svg class="ph-icon" aria-hidden="true"><use href="/icons/phosphor.svg#warning-octagon"></use></svg> Giftköder
         <span class="sidebar-item-badge" id="poison-badge" style="display:none">0</span>
       </div>
+      <div class="sidebar-item" data-page="recalls">
+        <svg class="ph-icon" aria-hidden="true"><use href="/icons/phosphor.svg#warning"></use></svg> Rückrufe
+      </div>
       <div class="sidebar-item" data-page="walks">
         <svg class="ph-icon" aria-hidden="true"><use href="/icons/phosphor.svg#paw-print"></use></svg> Gassi-Treffen
       </div>
@@ -459,6 +471,22 @@
       <div class="page-body page-container"></div>
     </section>
 
+    <section class="page" id="page-expenses">
+      <div class="page-body page-container"></div>
+    </section>
+
+    <section class="page" id="page-recalls">
+      <div class="page-body page-container"></div>
+    </section>
+
+    <section class="page" id="page-adoption">
+      <div class="page-body page-container"></div>
+    </section>
+
+    <section class="page" id="page-playdate">
+      <div class="page-body page-container"></div>
+    </section>
+
   </main>
 
   <!-- MOBILE BOTTOM NAVIGATION -->