feat: Graphify integration — tenant codebase graph + support AI augmentation

- src/lib/graphify.ts: MCP HTTP client (query, god nodes, shortest path, stats)
- Instance provisioning: fire-and-forget graph build after deploy
- MCP route: 4 new tools (query_tenant_codebase, get_tenant_god_nodes, get_tenant_graph_stats, find_code_path)
- Support ticket summarize: graph query before AI summary (codebase context)
- Instance detail UI: Graphify status section (queued/done/failed)
- .env: GRAPHIFY_URL + GRAPHIFY_API_KEY (commented, opt-in)

src/components/aos/views/instances.tsx

@@ -797,6 +797,63 @@ function InstanceDetailSheet({
                 </dl>
               </section>
 
+              {/* Codebase Graph (Graphify) */}
+              <section className="space-y-2">
+                <h3 className="text-xs font-semibold uppercase tracking-wider text-muted-foreground">
+                  Codebase-Graph (Graphify)
+                </h3>
+                <div className="rounded-md border border-border bg-muted/20 p-3 text-xs">
+                  {(() => {
+                    const graphEvents = instance.events.filter(
+                      (e) => e.type.startsWith('graphify.')
+                    )
+                    const buildQueued = graphEvents.some(
+                      (e) => e.type === 'graphify.build.queued'
+                    )
+                    const buildDone = graphEvents.some(
+                      (e) => e.type === 'graphify.build.ok'
+                    )
+                    const buildFailed = graphEvents.some(
+                      (e) => e.type === 'graphify.build.error'
+                    )
+                    if (buildDone) {
+                      return (
+                        <div className="flex items-center gap-2">
+                          <CheckCircle2 className="size-3.5 text-foreground" />
+                          <span>Graph erstellt — Support-AI kann Codebasis analysieren.</span>
+                        </div>
+                      )
+                    }
+                    if (buildFailed) {
+                      return (
+                        <div className="flex items-center gap-2">
+                          <AlertTriangle className="size-3.5 text-muted-foreground" />
+                          <span>Graph-Erstellung fehlgeschlagen. Siehe Ereignisverlauf.</span>
+                        </div>
+                      )
+                    }
+                    if (buildQueued) {
+                      return (
+                        <div className="flex items-center gap-2">
+                          <Loader2 className="size-3.5 animate-spin text-muted-foreground" />
+                          <span>Graph wird im Hintergrund erstellt…</span>
+                        </div>
+                      )
+                    }
+                    return (
+                      <div className="flex items-center gap-2">
+                        <CircleDashed className="size-3.5 text-muted-foreground" />
+                        <span>Kein Graphify-Graph vorhanden.</span>
+                      </div>
+                    )
+                  })()}
+                  <p className="mt-2 text-[10px] text-muted-foreground">
+                    Der Codebase-Graph ermöglicht der Support-AI, relevante
+                    Code-Stellen zu finden, wenn ein Ticket erstellt wird.
+                  </p>
+                </div>
+              </section>
+
               {/* Status timeline (events) */}
               <section className="space-y-2">
                 <h3 className="text-xs font-semibold uppercase tracking-wider text-muted-foreground">