#20 Cross-Mindmap: lesbarere Defaults und Quote-Theme-Tags optional

- cross-claim-erweitert (282 Linien) ist mit Abstand der dichteste Strang;
  default off, damit die Erkenntnis-fokussierten Signale (debates, widerspricht,
  belegt, answers) nicht ueberdeckt werden.
- Neuer Quote-Theme-Tag-Layer analog zur Single-Mindmap aus #19: jeder Top-Quote
  bekommt zusaetzliche Verbindungen zu allen Theme-Tags aus seinem themes-Array,
  default off, per Toggle einblendbar.
- Force-Layout: Quote-Theme-Links bekommen sehr niedrige Strength (0.03), damit
  sie das Layout nicht ueber die Hierarchie kippen.

Effekt: Default-Sichtbarkeit von 1422 auf 835 Linien reduziert; per Toggle
laesst sich gezielt die jeweilige Erkenntnisachse einblenden.

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

webapp/index.html

@@ -1536,9 +1536,10 @@ const CrossMindmapView = {
     'cross-debate':           true,
     'cross-claim-belegt':     true,
     'cross-claim-widerspricht': true,
-    'cross-claim-erweitert':  false,
+    'cross-claim-erweitert':  false, // 282 Stueck — visuell zu dicht, opt-in
     'cross-answer':           true,
     'cross-similarity':       false,
+    'quote-theme':            false, // Quote-Tags zu allen Themen, opt-in
   },
   activeClusterId: null,
   _refs: null,
@@ -1550,6 +1551,7 @@ const CrossMindmapView = {
     'cross-claim-erweitert':  { stroke: '#60a5fa', dash: null,    width: 1.2, opacity: 0.7 },
     'cross-answer':           { stroke: '#fb923c', dash: null,    width: 1.4, opacity: 0.8 },
     'cross-similarity':       { stroke: '#7dd3fc', dash: '4,4',  width: 0.7, opacity: 0.4 },
+    'quote-theme':            { stroke: '#a3a3a3', dash: '1,3',  width: 0.5, opacity: 0.3 },
   },
 
   async show(fromUrl = false) {
@@ -1661,18 +1663,26 @@ const CrossMindmapView = {
       });
     });
 
-    // 4. Top-Quote-Knoten
+    // 4. Top-Quote-Knoten + optionale Quote-Theme-Tag-Links
     (d.top_quotes || []).forEach(q => {
       const epK = epIndex[`${q.podcast_id}:${q.episode_id}`];
       if (!epK) return;
       const ep = nodes.find(n => n.id === epK);
+      const qK = `q-${q.podcast_id}-${q.id}`;
       nodes.push({
-        id: `q-${q.podcast_id}-${q.id}`, type: 'quote',
+        id: qK, type: 'quote',
         podcast_id: q.podcast_id, episode_id: q.episode_id, quote_id: q.id,
         text: q.text, speaker: q.speaker, start_time: q.start_time,
         r: 3 * sc, color: ep ? ep.color : '#aaa',
       });
-      links.push({ source: epK, target: `q-${q.podcast_id}-${q.id}`, type: 'episode-quote' });
+      links.push({ source: epK, target: qK, type: 'episode-quote' });
+      // Quote ↔ Theme-Tags (default off)
+      (q.themes || []).forEach(tid => {
+        const tK = `t-${q.podcast_id}-${tid}`;
+        if (nodes.find(n => n.id === tK)) {
+          links.push({ source: qK, target: tK, type: 'quote-theme' });
+        }
+      });
     });
 
     // 5. Cross-Links (debates, claim_*, answers, similarity)
@@ -1696,12 +1706,14 @@ const CrossMindmapView = {
         if (l.type === 'cluster-theme') return 100 * sc;
         if (l.type === 'theme-episode') return 70 * sc;
         if (l.type === 'episode-quote') return 18 * sc;
+        if (l.type === 'quote-theme') return 50 * sc;
         if (l.type && l.type.startsWith('cross-')) return 220 * sc;
         return 60 * sc;
       }).strength(l => {
         if (l.type === 'cluster-theme') return 0.4;
         if (l.type === 'theme-episode') return 0.2;
         if (l.type === 'episode-quote') return 0.4;
+        if (l.type === 'quote-theme') return 0.03;
         if (l.type && l.type.startsWith('cross-')) return 0.04;
         return 0.2;
       }))
@@ -1816,6 +1828,7 @@ const CrossMindmapView = {
       'cross-claim-erweitert': 'Erweiterung (Claims)',
       'cross-answer': 'Frage→Antwort',
       'cross-similarity': 'semantische Ähnlichkeit',
+      'quote-theme': 'Quote-Theme-Tags',
     };
     panel.innerHTML = `<div style="font-weight:600;color:var(--text-muted);margin-bottom:2px">Cross-Verbindungen</div>`;
     Object.keys(labels).forEach(t => {