v0.7.0: kiskegyed.hu parser, dual measurements, site links as URLs

- New parser for kiskegyed.hu: ingredients (with groups, dual measurements),
  instructions (ol > li > div), tags (section.tags)
- Dual measurement handling: "3 ek (70 g)" extracts alternate measurement
  to comment field
- Cross-site linking: kiskegyed→sobors links are followed to get full recipe
  (mirrors existing sobors→kiskegyed support)
- Supported sites now shown as clickable URLs in the import page
- supported_sites() returns dicts with name and url

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/templates/import.html

@@ -326,7 +326,7 @@
     <!-- Single import tab -->
     <div id="tabSingle">
         <p style="font-size:0.85rem;color:var(--text-dim);margin-bottom:0.8rem;">
-            Támogatott oldalak: <span class="supported-sites">{{ supported_sites | join(', ') }}</span> + egyéb (schema.org)
+            Támogatott oldalak: <span class="supported-sites">{% for s in supported_sites %}<a href="{{ s.url }}" target="_blank" style="color:var(--accent-light);text-decoration:none;">{{ s.name }}</a>{% if not loop.last %}, {% endif %}{% endfor %}</span> + egyéb (schema.org)
         </p>
         <div class="flex">
             <input type="url" id="recipeUrl" class="grow" style="margin-bottom:0"
@@ -341,7 +341,7 @@
     <!-- Bulk import tab -->
     <div id="tabBulk" style="display:none">
         <p style="font-size:0.85rem;color:var(--text-dim);margin-bottom:0.8rem;">
-            Támogatott oldalak: <span class="supported-sites">{{ supported_sites | join(', ') }}</span> + egyéb (schema.org)
+            Támogatott oldalak: <span class="supported-sites">{% for s in supported_sites %}<a href="{{ s.url }}" target="_blank" style="color:var(--accent-light);text-decoration:none;">{{ s.name }}</a>{% if not loop.last %}, {% endif %}{% endfor %}</span> + egyéb (schema.org)
         </p>
 
         <label for="bulkUrls">URL-ek (soronként egy)</label>