Feat: Gedächtnis-Tab überarbeitet — Sigma.js-Graph (skaliert), Liste als Default + gruppiert

Graph: reagraph (three.js, schwer, hing Renderer) → Sigma.js v3 + graphology (graph-optimiertes WebGL, skaliert auf tausende Knoten), im App-Look: Kategorie-Farben, Knotengröße nach Verknüpfungen, Hover-Highlight (Nachbarn hervor, Rest dimmt), Legende. Liste ist jetzt Default + nach Kategorie gruppierte Sektionen (statt flacher Wand). reagraph deinstalliert → leichteres Bundle. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-28 11:09:33 +02:00
parent 7bc20a6302
commit d832f90ad6
16 changed files with 958 additions and 4808 deletions
@@ -1,8 +1,13 @@
-import { useMemo, useState } from "react"
-import { GraphCanvas, darkTheme } from "reagraph"
+import { useEffect, useMemo, useRef, useState } from "react"
+import Graph from "graphology"
+import forceAtlas2 from "graphology-layout-forceatlas2"
+import Sigma from "sigma"
 import { Trash2, Sparkles, Share2 } from "lucide-react"
 import { type MemoryGraph } from "@/lib/api"

+// Sigma.js v3 + graphology: graph-optimiertes WebGL (kein three.js-Ballast) → skaliert auf tausende
+// Fakten flüssig. Im App-Look gestylt; Hover hebt den Knoten + seine Nachbarn hervor, der Rest dimmt.
+
 const CAT_COLOR: Record<string, string> = {
  identity: "#22d3ee", knowledge: "#6366f1", rules: "#a78bfa", events: "#fbbf24",
 }
@@ -10,9 +15,18 @@ const CAT_LABEL: Record<string, string> = {
  identity: "Identität", knowledge: "Wissen", rules: "Regeln", events: "Ereignisse",
 }
 const AUTO = new Set(["auto", "agent", "hermes"])
+const DIM_NODE = "#1f2937"
+const DIM_EDGE = "#0f172a"
+const EDGE = "#243044"
+const EDGE_HI = "#4b5563"

 export function GraphView({ data, onDelete }: { data: MemoryGraph; onDelete: (id: string) => void }) {
  const [selected, setSelected] = useState<string | null>(null)
+  const containerRef = useRef<HTMLDivElement>(null)
+  const sigmaRef = useRef<Sigma | null>(null)
+  const graphRef = useRef<Graph | null>(null)
+  const active = useRef<string | null>(null)        // hervorgehobener Knoten (hover oder Auswahl)
+  const selectedRef = useRef<string | null>(null)   // aktuelle Auswahl (für leaveNode ohne Effekt-Neulauf)

  const degree = useMemo(() => {
    const d: Record<string, number> = {}
@@ -20,19 +34,67 @@ export function GraphView({ data, onDelete }: { data: MemoryGraph; onDelete: (id
    return d
  }, [data])

-  const nodes = useMemo(() => data.nodes.map((n) => ({
-    id: n.id,
-    label: n.content.length > 26 ? n.content.slice(0, 25) + "…" : n.content,
-    fill: CAT_COLOR[n.category] || "#64748b",
-    size: 6 + Math.min(degree[n.id] || 0, 6) * 2,
-  })), [data, degree])
+  // Graph (neu)bauen + Layout + Sigma rendern, wenn sich die Daten ändern.
+  useEffect(() => {
+    if (!containerRef.current || !data.nodes.length) return
+    const graph = new Graph()
+    const N = data.nodes.length
+    data.nodes.forEach((n, i) => {
+      const a = (2 * Math.PI * i) / N
+      graph.addNode(n.id, {
+        x: Math.cos(a), y: Math.sin(a),                 // Startposition (Kreis) für ForceAtlas2
+        size: 4 + Math.min(degree[n.id] || 0, 12) * 1.4,
+        color: CAT_COLOR[n.category] || "#64748b",
+        label: n.content.length > 48 ? n.content.slice(0, 47) + "…" : n.content,
+      })
+    })
+    data.edges.forEach((e) => {
+      if (graph.hasNode(e.source) && graph.hasNode(e.target) && !graph.hasEdge(e.source, e.target))
+        graph.addEdge(e.source, e.target, { size: 0.6 + (e.weight || 0), color: EDGE })
+    })
+    forceAtlas2.assign(graph, { iterations: 220, settings: forceAtlas2.inferSettings(graph) })
+    graphRef.current = graph

-  const edges = useMemo(() => data.edges.map((e) => ({
-    id: `${e.source}->${e.target}`,
-    source: e.source,
-    target: e.target,
-    size: 0.4 + e.weight,
-  })), [data])
+    const renderer = new Sigma(graph, containerRef.current, {
+      renderLabels: true,
+      labelColor: { color: "#cbd5e1" },
+      labelSize: 11,
+      labelWeight: "500",
+      labelDensity: 0.6,
+      labelRenderedSizeThreshold: N > 120 ? 12 : 0,   // bei vielen Knoten nur große labeln (entklumpen)
+      defaultEdgeColor: EDGE,
+      minCameraRatio: 0.1,
+      maxCameraRatio: 4,
+      nodeReducer: (id, attrs) => {
+        const a = active.current
+        if (!a) return attrs
+        if (id === a || graph.areNeighbors(a, id)) return attrs
+        return { ...attrs, color: DIM_NODE, label: "" }
+      },
+      edgeReducer: (edge, attrs) => {
+        const a = active.current
+        if (!a) return attrs
+        const ext = graph.extremities(edge)
+        if (ext[0] === a || ext[1] === a) return { ...attrs, color: EDGE_HI, size: (attrs.size || 1) * 1.6 }
+        return { ...attrs, color: DIM_EDGE }
+      },
+    })
+    sigmaRef.current = renderer
+
+    renderer.on("clickNode", ({ node }) => setSelected(node))
+    renderer.on("clickStage", () => setSelected(null))
+    renderer.on("enterNode", ({ node }) => { active.current = node; renderer.refresh(); containerRef.current!.style.cursor = "pointer" })
+    renderer.on("leaveNode", () => { active.current = selectedRef.current; renderer.refresh(); containerRef.current!.style.cursor = "default" })
+
+    return () => { renderer.kill(); sigmaRef.current = null; graphRef.current = null }
+  }, [data, degree])
+
+  // Auswahl spiegelt die Hervorhebung (auch ohne Hover).
+  useEffect(() => {
+    selectedRef.current = selected
+    active.current = selected
+    sigmaRef.current?.refresh()
+  }, [selected])

  const sel = selected ? data.nodes.find((n) => n.id === selected) ?? null : null
  const neighbors = useMemo(() => {
@@ -56,17 +118,15 @@ export function GraphView({ data, onDelete }: { data: MemoryGraph; onDelete: (id
  return (
    <div className="grid grid-cols-1 lg:grid-cols-[1fr_280px] gap-3">
      <div className="relative h-[480px] rounded-2xl border border-border/60 bg-[#070a0f] overflow-hidden">
-        <GraphCanvas
-          nodes={nodes}
-          edges={edges}
-          theme={darkTheme}
-          layoutType="forceDirected2d"
-          labelType="nodes"
-          edgeArrowPosition="none"
-          draggable
-          onNodeClick={(n: any) => setSelected(n.id)}
-          onCanvasClick={() => setSelected(null)}
-        />
+        <div ref={containerRef} className="absolute inset-0" />
+        {/* Legende */}
+        <div className="absolute left-3 bottom-3 flex flex-wrap gap-2 rounded-lg bg-background/40 px-2.5 py-1.5 backdrop-blur-sm">
+          {Object.entries(CAT_LABEL).map(([k, l]) => (
+            <span key={k} className="flex items-center gap-1 text-[10px] text-muted-foreground">
+              <span className="h-2 w-2 rounded-full" style={{ background: CAT_COLOR[k] }} />{l}
+            </span>
+          ))}
+        </div>
      </div>

      <div className="rounded-2xl border border-border/60 bg-card/45 backdrop-blur-md p-4 min-h-[480px]">
@@ -87,20 +147,15 @@ export function GraphView({ data, onDelete }: { data: MemoryGraph; onDelete: (id
            </div>
            <div className="flex flex-col gap-1.5 mb-4">
              {neighbors.length ? neighbors.map((n) => (
-                <button
-                  key={n.id}
-                  onClick={() => setSelected(n.id)}
-                  className="flex items-center gap-2 text-[11px] text-muted-foreground hover:text-foreground text-left transition-colors"
-                >
+                <button key={n.id} onClick={() => setSelected(n.id)}
+                  className="flex items-center gap-2 text-[11px] text-muted-foreground hover:text-foreground text-left transition-colors">
                  <span className="w-1.5 h-1.5 rounded-full shrink-0" style={{ background: CAT_COLOR[n.category] }} />
                  <span className="truncate">{n.content}</span>
                </button>
              )) : <span className="text-[11px] text-muted-foreground/60">—</span>}
            </div>
-            <button
-              onClick={() => { onDelete(sel.id); setSelected(null) }}
-              className="flex items-center gap-1.5 text-[11px] text-red-400 border border-red-500/20 rounded-lg px-2.5 py-1.5 hover:bg-red-500/5 transition-all"
-            >
+            <button onClick={() => { onDelete(sel.id); setSelected(null) }}
+              className="flex items-center gap-1.5 text-[11px] text-red-400 border border-red-500/20 rounded-lg px-2.5 py-1.5 hover:bg-red-500/5 transition-all">
              <Trash2 className="h-3.5 w-3.5" /> vergessen
            </button>
          </>
@@ -108,7 +163,7 @@ export function GraphView({ data, onDelete }: { data: MemoryGraph; onDelete: (id
          <div className="h-full flex flex-col items-center justify-center text-center text-muted-foreground/70 gap-2 pt-24">
            <Share2 className="h-6 w-6" />
            <div className="text-xs max-w-[180px] leading-relaxed">
-              Einen Knoten wählen, um den Fakt und seine semantischen Nachbarn zu sehen.
+              Auf einen Knoten klicken, um den Fakt und seine semantischen Nachbarn zu sehen. Hover hebt das Netz hervor.
            </div>
          </div>
        )}