feat: Regulatory News Dashboard — proaktive Compliance-Alerts

Zeigt anstehende regulatorische Fristen im Dashboard an, abgeleitet
aus den bestehenden Obligation v2 JSON-Dateien. Keine neue DB-Tabelle.

Erster News-Eintrag: Widerrufsbutton-Pflicht ab 19.06.2026
(EU-RL 2023/2673, §356a BGB) — eigener Text, keine externe Quelle.

Features:
- Go Service: scannt Obligations nach Fristen, berechnet Urgency
- API: GET /sdk/v1/regulatory-news mit Countdown + Farbcodierung
- Dashboard: RegulatoryNewsFeed Sektion mit Countdown-Badges
- Vorlage: news-Feld in v2 JSON fuer zukuenftige regulatorische Updates
- 11 Tests (Sortierung, Urgency, Deadline-Parsing, Real-File-Test)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

admin-compliance/app/api/sdk/v1/regulatory-news/route.ts

@@ -0,0 +1,26 @@
+import { NextRequest, NextResponse } from 'next/server'
+
+const SDK_URL = process.env.SDK_URL || 'http://ai-compliance-sdk:8090'
+const DEFAULT_TENANT_ID = process.env.DEFAULT_TENANT_ID || '9282a473-5c95-4b3a-bf78-0ecc0ec71d3e'
+
+export async function GET(request: NextRequest) {
+  try {
+    const { searchParams } = new URL(request.url)
+    const qs = searchParams.toString()
+    const url = `${SDK_URL}/sdk/v1/regulatory-news${qs ? `?${qs}` : ''}`
+
+    const response = await fetch(url, {
+      headers: {
+        'Content-Type': 'application/json',
+        'X-Tenant-ID': request.headers.get('X-Tenant-ID') || DEFAULT_TENANT_ID,
+      },
+    })
+
+    if (!response.ok) {
+      return NextResponse.json({ error: 'SDK error' }, { status: response.status })
+    }
+    return NextResponse.json(await response.json())
+  } catch {
+    return NextResponse.json({ error: 'Connection failed' }, { status: 503 })
+  }
+}