feat(advisor): Evidence Workspace — structured panes, markdown, sources as knowledge units

Rebuilds the Compliance Advisor floating widget from a plain chat into an Evidence
Workspace: pinned last question, markdown-rendered answer (clean prose), and separate
panes for Sources (hierarchical Knowledge Units), Figures (C8, conditional) and
Footnotes (C-FN), plus a stats bar (Quellen/Regelwerke/Diagramme/Fußnoten). Scrollable
turn history; stays a floating icon on every SDK page.

Architecture (user direction): the frontend renders ONLY structured evidence and NEVER
parses the answer text. The proxy now returns a JSON AdvisorEvidenceMeta line followed
by the streamed markdown answer; advisor-rag exposes structured results; an adapter maps
RAG/compiler output to the frontend envelope. Figures/footnotes wire in once the
RAG-ingestion contract lands (requested on the board) — figures pane is conditional.

- lib/sdk/advisor/{evidence,evidence-adapter}.ts (+ adapter test, 7 cases)
- components/sdk/advisor/* panes + in-house safe Markdown (no new dep, no dangerouslySetInnerHTML) + test
- useAdvisorStream (meta-line parse + streamed answer) + useAdvisorEmail (escaped)
- proxy: evidence-meta-v1 envelope + clean-prose prompt (no inline citations)
- tsc clean, 11 vitest pass, check-loc 0. ESLint not installed in this node_modules -> CI lints on push.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

admin-compliance/components/sdk/advisor/StatsBar.tsx

@@ -0,0 +1,52 @@
+'use client'
+
+import { FileText, Library, Image as ImageIcon, Hash } from 'lucide-react'
+import type { AdvisorStats } from '@/lib/sdk/advisor/evidence'
+
+function Chip({
+  icon,
+  label,
+  value,
+  dim,
+}: {
+  icon: React.ReactNode
+  label: string
+  value: number
+  dim?: boolean
+}) {
+  return (
+    <div
+      className={`flex items-center gap-1 rounded-md border px-1.5 py-0.5 text-[11px] ${
+        dim ? 'border-gray-100 bg-gray-50 text-gray-400' : 'border-gray-200 bg-white text-gray-600'
+      }`}
+      title={`${label}: ${value}`}
+    >
+      {icon}
+      <span className="font-semibold text-gray-900">{value}</span>
+      <span>{label}</span>
+    </div>
+  )
+}
+
+/** Compact evidence summary: "Diese Antwort basiert auf N Quellen / M Regelwerken ...". */
+export function StatsBar({ stats }: { stats: AdvisorStats }) {
+  const cls = 'h-3 w-3'
+  return (
+    <div className="flex flex-wrap items-center gap-1.5">
+      <Chip icon={<FileText className={cls} />} label="Quellen" value={stats.sources} />
+      <Chip icon={<Library className={cls} />} label="Regelwerke" value={stats.regulations} />
+      <Chip
+        icon={<ImageIcon className={cls} />}
+        label="Diagramme"
+        value={stats.figures}
+        dim={stats.figures === 0}
+      />
+      <Chip
+        icon={<Hash className={cls} />}
+        label="Fußnoten"
+        value={stats.footnotes}
+        dim={stats.footnotes === 0}
+      />
+    </div>
+  )
+}