Feature: Tagebuch Ort/POI, Foto/Video-Edit, Modal-UX, iOS-Fixes

Tagebuch — Ort/POI (DayOne-ähnlich):
- diary.location_name Spalte, DiaryCreate/Update mit gps_lat/lon/location_name
- GET /api/dogs/{id}/diary/nearby: Overpass + Nominatim (vor {entry_id}-Route)
- Mini-Karte im Edit-Formular: Leaflet lazy, Edit-Modus, SVG-Pin
- Meilenstein-Toggle: Button statt Checkbox, Filter in Toolbar
- Datenmigration: 97 Ort-Einträge aus text → location_name

Tagebuch — Foto/Video:
- Foto/Video im Edit: Ersetzen + Löschen, DELETE media endpoint
- Media-Picker: Kamera/Mediathek/Datei Buttons
- Video-Wiedergabe (<video controls> in Detail + Edit)

Modal-UX (alle Edit-Karten vereinheitlicht):
- Footer-Pattern: [Speichern vollbreit] / [Löschen][Abbrechen]
- diary, dog-profile, events, health, places, walks, settings, sitting
- Löschen aus Detail-Modal → Edit-Form verschoben

iOS Mobile-Fixes:
- Auto-Zoom: input/select/textarea font-size 16px !important
- Scroll-Through: html.modal-open + touch-action:none auf Overlay
- Kein position:fixed mehr auf body (kein Scroll-Sprung)

PWA & Icons:
- icon-512-any.png + icon-192-any.png (quadratisch, maskable)
- manifest.json: purpose any/maskable getrennt
- Gesundheits-Icon: syringe → first-aid

Import-Fix:
- _HTMLStripper überspringt video/audio/script → kein "Video nicht gefunden" mehr

backend/static/js/pages/dog-profile.js

@@ -248,8 +248,10 @@ window.Page_dog_profile = (() => {
                  value="${_esc(dog.chip_nr || '')}" placeholder="z.B. 276009200123456" maxlength="20">
         </div>`,
       footer: `
-        <button class="btn btn-secondary" onclick="UI.modal.close()">Abbrechen</button>
-        <button class="btn btn-primary" id="chip-edit-save-btn">Speichern</button>`,
+        <div style="display:flex;flex-direction:column;gap:var(--space-2);width:100%">
+          <button class="btn btn-primary" id="chip-edit-save-btn" style="width:100%">Speichern</button>
+          <button class="btn btn-secondary" onclick="UI.modal.close()">Abbrechen</button>
+        </div>`,
     });
     document.getElementById('chip-edit-save-btn').addEventListener('click', async () => {
       const nr  = document.getElementById('chip-edit-input').value.trim() || null;
@@ -303,9 +305,13 @@ window.Page_dog_profile = (() => {
     `;
 
     const footer = `
-      ${hasPhoto ? `<button class="btn btn-danger" id="pe-delete-btn">${UI.icon('trash')} Löschen</button>` : ''}
-      <button class="btn btn-ghost" onclick="UI.modal.close()">Abbrechen</button>
-      ${hasPhoto ? `<button class="btn btn-primary" id="pe-save-btn">Speichern</button>` : ''}
+      <div style="display:flex;flex-direction:column;gap:var(--space-2);width:100%">
+        ${hasPhoto ? `<button class="btn btn-primary" id="pe-save-btn" style="width:100%">Speichern</button>` : ''}
+        <div style="display:flex;gap:var(--space-2)">
+          ${hasPhoto ? `<button class="btn btn-danger" id="pe-delete-btn">${UI.icon('trash')} Löschen</button>` : ''}
+          <button class="btn btn-secondary flex-1" onclick="UI.modal.close()">Abbrechen</button>
+        </div>
+      </div>
     `;
 
     UI.modal.open({ title: 'Foto bearbeiten', body, footer });
@@ -541,8 +547,10 @@ window.Page_dog_profile = (() => {
       title:  'Weiteren Hund anlegen',
       body:   _formHTML(null, true),
       footer: `
-        <button type="button" class="btn btn-secondary flex-1" id="dp-form-cancel">Abbrechen</button>
-        <button type="submit" form="dp-form" class="btn btn-primary flex-1">${UI.icon('dog')} Hund anlegen</button>
+        <div style="display:flex;flex-direction:column;gap:var(--space-2);width:100%">
+          <button type="submit" form="dp-form" class="btn btn-primary" style="width:100%">${UI.icon('dog')} Hund anlegen</button>
+          <button type="button" class="btn btn-secondary" id="dp-form-cancel">Abbrechen</button>
+        </div>
       `,
     });
     _bindForm(null, true);
@@ -556,8 +564,13 @@ window.Page_dog_profile = (() => {
       title:  `${dog.name} bearbeiten`,
       body:   _formHTML(dog, true),
       footer: `
-        <button type="button" class="btn btn-secondary flex-1" id="dp-form-cancel">Abbrechen</button>
-        <button type="submit" form="dp-form" class="btn btn-primary flex-1">Speichern</button>
+        <div style="display:flex;flex-direction:column;gap:var(--space-2);width:100%">
+          <button type="submit" form="dp-form" class="btn btn-primary" style="width:100%">Speichern</button>
+          <div style="display:flex;gap:var(--space-2)">
+            <button type="button" class="btn btn-danger" id="dp-delete-btn">Löschen</button>
+            <button type="button" class="btn btn-secondary flex-1" id="dp-form-cancel">Abbrechen</button>
+          </div>
+        </div>
       `,
     });
     _bindForm(dog, true);
@@ -664,15 +677,6 @@ window.Page_dog_profile = (() => {
           </button>
         </div>` : ''}
 
-        ${dog ? `
-          <div style="margin-top:var(--space-5);padding-top:var(--space-4);
-                      border-top:1px solid var(--c-border);text-align:center">
-            <button type="button" class="btn btn-ghost btn-sm" id="dp-delete-btn"
-                    style="color:var(--c-danger)">
-              ${dog.name} löschen
-            </button>
-          </div>
-        ` : ''}
 
       </form>
     `;