feat(advisor): topic threads, per-question delete/copy, fullscreen

Adds case management to the Compliance Advisor widget.

- topic threads: cases group into threads; the left menu shows each
  thread's first question as the Thema with expandable follow-ups.
  Send = follow-up to the active thread (carries the thread's prior Q&A
  as history for contextual answers); "+" starts a new topic.
- delete: a trash action per question (menu + stacked view).
- copy: single Q&A (question + answer + evidence + footnotes) or a whole
  thread, as Markdown to the clipboard (pure formatters in copy.ts).
- fullscreen: compact -> panel -> fullscreen view.
- route.ts consumes an optional bounded `history` so follow-ups are
  contextual for both the widget and the workspace consumer.

Tests: copy formatter unit tests + Playwright specs (threads/new-topic,
delete, fullscreen, copy affordance). No deploy.

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

admin-compliance/lib/sdk/__tests__/advisor-copy.test.ts

@@ -0,0 +1,65 @@
+import { describe, it, expect } from 'vitest'
+import { formatCaseForCopy, formatThreadForCopy } from '../advisor/copy'
+import type { AdvisorResponse } from '../advisor/contract'
+
+const answer: AdvisorResponse = {
+  mode: 'answer',
+  question: 'CRA Meldefrist',
+  clarity: { is_underspecified: false, concentration: 0.9 },
+  general_answer: null,
+  answer: 'Unverzüglich melden [1].',
+  scoped_query: 'cyber',
+  evidence: [{ evidence_id: 'e1', document: 'CRA', section: 'Art. 14', paragraph: 'Abs. 1', url: 'https://x' }],
+  citations: [],
+  visual_evidence: [],
+  footnotes: [{ footnote_id: 'f1', ref: 'Fußnote 3', document: 'EDPB', section: 'Kap III', text: 'Detail' }],
+}
+
+const clarify: AdvisorResponse = {
+  mode: 'clarify',
+  question: 'Was ist PDCA?',
+  clarity: { is_underspecified: true, concentration: 0.3 },
+  general_answer: 'PDCA = Plan-Do-Check-Act.',
+  answer: null,
+  scoped_query: null,
+  evidence: [],
+  citations: [],
+  visual_evidence: [],
+  footnotes: [],
+}
+
+describe('formatCaseForCopy', () => {
+  it('includes question, answer, resolved evidence and footnotes', () => {
+    const s = formatCaseForCopy({ question: 'CRA Meldefrist', response: answer })
+    expect(s).toContain('### Frage\nCRA Meldefrist')
+    expect(s).toContain('### Antwort\nUnverzüglich melden [1].')
+    expect(s).toContain('### Belege')
+    expect(s).toContain('Cyber Resilience Act (CRA), Art. 14 Abs. 1 (https://x)')
+    expect(s).toContain('### Fußnoten')
+    expect(s).toContain('Fußnote 3 — EDPB / Kap III: Detail')
+  })
+
+  it('falls back to the general definition for a clarify case', () => {
+    const s = formatCaseForCopy({ question: 'Was ist PDCA?', response: clarify })
+    expect(s).toContain('### Antwort\nPDCA = Plan-Do-Check-Act.')
+    expect(s).not.toContain('### Belege')
+  })
+
+  it('handles a case without a response', () => {
+    const s = formatCaseForCopy({ question: 'offen', response: null })
+    expect(s).toContain('### Antwort\n(keine Antwort)')
+  })
+})
+
+describe('formatThreadForCopy', () => {
+  it('renders a title heading + every case separated by a rule', () => {
+    const s = formatThreadForCopy('CRA Meldefrist', [
+      { question: 'CRA Meldefrist', response: answer },
+      { question: 'Und für KMU?', response: clarify },
+    ])
+    expect(s.startsWith('# CRA Meldefrist')).toBe(true)
+    expect(s).toContain('\n---\n')
+    expect(s).toContain('CRA Meldefrist')
+    expect(s).toContain('Und für KMU?')
+  })
+})

admin-compliance/lib/sdk/advisor/copy.ts

@@ -0,0 +1,48 @@
+// Pure formatters for "copy to clipboard": a single case (Q + answer + evidence) or a whole thread.
+// No DOM/clipboard here (that is the caller's side effect) so this stays testable.
+
+import type { AdvisorResponse, EvidenceUnit } from './contract'
+import { resolveRegulation } from './regulation-display'
+
+export interface CopyableCase {
+  question: string
+  response: AdvisorResponse | null
+}
+
+function evidenceLine(e: EvidenceUnit): string {
+  const { familyLabel } = resolveRegulation({ code: e.regulation_code || e.document, short: e.document })
+  const loc = [e.section, e.paragraph].filter(Boolean).join(' ')
+  const ref = [familyLabel, loc].filter(Boolean).join(', ')
+  return e.url ? `- ${ref} (${e.url})` : `- ${ref}`
+}
+
+/** One case as portable Markdown: question, answer (or general definition), and its evidence. */
+export function formatCaseForCopy(c: CopyableCase): string {
+  const parts: string[] = [`### Frage`, c.question.trim()]
+  const r = c.response
+  const answer = (r?.answer || r?.general_answer || '').trim()
+  parts.push('', '### Antwort', answer || '(keine Antwort)')
+
+  if (r && r.evidence.length > 0) {
+    parts.push('', '### Belege', ...r.evidence.map(evidenceLine))
+  }
+  if (r && r.footnotes.length > 0) {
+    parts.push(
+      '',
+      '### Fußnoten',
+      ...r.footnotes.map((f, i) => {
+        const head = f.ref || `Fußnote ${i + 1}`
+        const src = [f.document, f.section].filter(Boolean).join(' / ')
+        return `- ${[head, src].filter(Boolean).join(' — ')}${f.text ? `: ${f.text}` : ''}`
+      }),
+    )
+  }
+  return parts.join('\n')
+}
+
+/** A whole topic thread: a title heading followed by every case, separated by rules. */
+export function formatThreadForCopy(title: string, cases: CopyableCase[]): string {
+  const header = `# ${title.trim() || 'Compliance-Advisor-Verlauf'}`
+  const body = cases.map(formatCaseForCopy).join('\n\n---\n\n')
+  return `${header}\n\n${body}`
+}