enrichment: drop LLM for structured info, dedup images by sha + phash

Per user request, the LLM is no longer asked to extract rooms/size/rent/WBS —
those come from the inberlinwohnen.de scraper which is reliable. Haiku is now
used for one narrow job: pick which <img> URLs from the listing page are
actual flat photos (vs. logos, badges, ads, employee portraits). On any LLM
failure the unfiltered candidate list passes through.

Image dedup runs in two tiers:
1. SHA256 of bytes — drops different URLs that point to byte-identical files
2. Perceptual hash (Pillow + imagehash, Hamming distance ≤ 5) — drops the
   "same image at a different resolution" duplicates from srcset / CDN
   variants that were filling galleries with 2–4× copies

UI:
- Wohnungsliste falls back to scraper-only display (rooms/size/rent/wbs)
- Detail panel only shows images + "Zur Original-Anzeige →"; description /
  features / pros & cons / kv table are gone
- Per-row "erneut versuchen" link + the "analysiert…/?" status chips were
  tied to LLM extraction and are removed; the header "Bilder nachladen (N)"
  button still surfaces pending/failed batches for admins

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

web/templates/_wohnung_detail.html

@@ -1,14 +1,13 @@
-{# Expanded detail for a single flat, loaded into #flat-detail-<id> via HTMX. #}
+{# Expanded detail for a single flat — only shows downloaded images. #}
 {% if enrichment_status == 'pending' %}
-<div class="px-4 py-5 text-sm text-slate-500">Analyse läuft – kommt in wenigen Augenblicken zurück…</div>
+<div class="px-4 py-5 text-sm text-slate-500">Bilder werden abgerufen…</div>
 {% elif enrichment_status == 'failed' %}
 <div class="px-4 py-5 text-sm text-slate-500">
-    Detail-Analyse konnte nicht abgerufen werden.
-    <a href="{{ flat.link }}" target="_blank" rel="noopener">Zur Original-Anzeige →</a>
+    Bilder konnten nicht geladen werden.
+    <a href="{{ flat.link }}" target="_blank" rel="noopener" class="ml-1">Zur Original-Anzeige →</a>
 </div>
-{% else %}
-<div class="px-4 py-4 space-y-4">
-    {% if image_urls %}
+{% elif image_urls %}
+<div class="px-4 py-4 space-y-3">
     <div class="flat-gallery">
         {% for src in image_urls %}
         <a class="flat-gallery-tile" href="{{ src }}" target="_blank" rel="noopener">
@@ -16,67 +15,13 @@
         </a>
         {% endfor %}
     </div>
-    {% endif %}
-
-    {% if enrichment and enrichment.description %}
-    <p class="text-sm text-slate-700">{{ enrichment.description }}</p>
-    {% endif %}
-
-    {% if enrichment %}
-    <div class="grid grid-cols-2 md:grid-cols-3 gap-x-6 gap-y-1.5 text-xs">
-        {% macro kv(label, value) %}
-            {% if value is not none and value != '' %}
-            <div class="flex justify-between gap-3 border-b border-soft py-1">
-                <span class="text-slate-500">{{ label }}</span>
-                <span class="text-slate-800 text-right">{{ value }}</span>
-            </div>
-            {% endif %}
-        {% endmacro %}
-        {{ kv('Adresse', enrichment.address) }}
-        {{ kv('Zimmer', enrichment.rooms) }}
-        {{ kv('Größe', enrichment.size_sqm ~ ' m²' if enrichment.size_sqm else none) }}
-        {{ kv('Kaltmiete', enrichment.rent_cold ~ ' €' if enrichment.rent_cold else none) }}
-        {{ kv('Nebenkosten', enrichment.utilities ~ ' €' if enrichment.utilities else none) }}
-        {{ kv('Gesamtmiete', enrichment.rent_total ~ ' €' if enrichment.rent_total else none) }}
-        {{ kv('Kaution', enrichment.deposit ~ ' €' if enrichment.deposit else none) }}
-        {{ kv('Bezugsfrei ab', enrichment.available_from) }}
-        {{ kv('Etage', enrichment.floor) }}
-        {{ kv('Heizung', enrichment.heating) }}
-        {{ kv('Energieausweis', enrichment.energy_certificate) }}
-        {{ kv('Energiewert', enrichment.energy_value) }}
-        {{ kv('Baujahr', enrichment.year_built) }}
-        {{ kv('WBS', 'erforderlich' if enrichment.wbs_required else ('nicht erforderlich' if enrichment.wbs_required == false else none)) }}
-        {{ kv('WBS-Typ', enrichment.wbs_type) }}
-    </div>
-    {% endif %}
-
-    {% if enrichment and enrichment.features %}
-    <div class="flex flex-wrap gap-1.5">
-        {% for f in enrichment.features %}<span class="chip chip-info">{{ f }}</span>{% endfor %}
-    </div>
-    {% endif %}
-
-    <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
-        {% if enrichment and enrichment.pros %}
-        <div>
-            <div class="text-xs uppercase tracking-wide text-slate-500 mb-1">Pro</div>
-            <ul class="text-sm space-y-1">
-                {% for p in enrichment.pros %}<li>+ {{ p }}</li>{% endfor %}
-            </ul>
-        </div>
-        {% endif %}
-        {% if enrichment and enrichment.cons %}
-        <div>
-            <div class="text-xs uppercase tracking-wide text-slate-500 mb-1">Contra</div>
-            <ul class="text-sm space-y-1">
-                {% for c in enrichment.cons %}<li>− {{ c }}</li>{% endfor %}
-            </ul>
-        </div>
-        {% endif %}
-    </div>
-
     <div class="text-xs">
         <a href="{{ flat.link }}" target="_blank" rel="noopener">Zur Original-Anzeige →</a>
     </div>
 </div>
+{% else %}
+<div class="px-4 py-5 text-sm text-slate-500">
+    Keine Bilder gefunden.
+    <a href="{{ flat.link }}" target="_blank" rel="noopener" class="ml-1">Zur Original-Anzeige →</a>
+</div>
 {% endif %}