refactor(compliance-sdk): split client/provider/embed/state under 500 LOC

Phase 4 continuation. All touched files now under the file-size cap, and
drive-by fixes unblock the types/core/react/vanilla builds which were broken
at baseline.

Splits
- packages/types/src/state 505 -> 31 LOC barrel + state-flow/-assessment/-core
- packages/core/src/client 521 -> 395 LOC + client-http 187 LOC (HTTP transport)
- packages/react/src/provider 539 -> 460 LOC + provider-context 101 LOC
- packages/vanilla/src/embed 611 -> 290 LOC + embed-banner 321 + embed-translations 78

Drive-by fixes (pre-existing typecheck/build failures)
- types/rag.ts: rename colliding LegalDocument export to RagLegalDocument
  (the `export *` chain in index.ts was ambiguous; two consumers updated
  - core/modules/rag.ts drops unused import, vue/composables/useRAG.ts
  switches to the renamed symbol).
- core/modules/rag.ts: wrap client searchRAG response to add the missing
  `query` field so the declared SearchResponse return type is satisfied.
- react/provider.tsx: re-export useCompliance so ComplianceDashboard /
  ConsentBanner / DSRPortal legacy `from '../provider'` imports resolve.
- vanilla/embed.ts + web-components/base.ts: default tenantId to ''
  so ComplianceClient construction typechecks.
- vanilla/web-components/consent-banner.ts: tighten categories literal to
  `as const` so t.categories indexing narrows correctly.

Verification: packages/types + core + react + vanilla all `pnpm build`
clean with DTS emission. consent-sdk unaffected (still green).

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

breakpilot-compliance-sdk/packages/vanilla/src/embed-translations.ts

@@ -0,0 +1,78 @@
+/**
+ * i18n string catalog for the vanilla embed SDK cookie banner.
+ *
+ * Phase 4: extracted from embed.ts.
+ */
+
+import type { ConsentPurpose } from '@breakpilot/compliance-sdk-types'
+
+export type BannerLanguage = 'de' | 'en'
+
+export interface CategoryCopy {
+  name: string
+  description: string
+}
+
+export interface BannerCopy {
+  title: string
+  description: string
+  acceptAll: string
+  rejectAll: string
+  settings: string
+  save: string
+  privacy: string
+  imprint: string
+  categories: Record<ConsentPurpose, CategoryCopy>
+}
+
+export const TRANSLATIONS: Record<BannerLanguage, BannerCopy> = {
+  de: {
+    title: 'Cookie-Einwilligung',
+    description:
+      'Wir verwenden Cookies, um Ihre Erfahrung zu verbessern. Weitere Informationen finden Sie in unserer Datenschutzerklärung.',
+    acceptAll: 'Alle akzeptieren',
+    rejectAll: 'Nur notwendige',
+    settings: 'Einstellungen',
+    save: 'Speichern',
+    privacy: 'Datenschutz',
+    imprint: 'Impressum',
+    categories: {
+      ESSENTIAL: { name: 'Notwendig', description: 'Erforderlich für die Grundfunktionen' },
+      FUNCTIONAL: { name: 'Funktional', description: 'Verbesserte Funktionen' },
+      ANALYTICS: { name: 'Analyse', description: 'Nutzungsstatistiken' },
+      MARKETING: { name: 'Marketing', description: 'Personalisierte Werbung' },
+      PERSONALIZATION: { name: 'Personalisierung', description: 'Angepasste Inhalte' },
+      THIRD_PARTY: { name: 'Drittanbieter', description: 'Externe Dienste' },
+    },
+  },
+  en: {
+    title: 'Cookie Consent',
+    description:
+      'We use cookies to improve your experience. For more information, please see our privacy policy.',
+    acceptAll: 'Accept All',
+    rejectAll: 'Reject Non-Essential',
+    settings: 'Settings',
+    save: 'Save',
+    privacy: 'Privacy Policy',
+    imprint: 'Imprint',
+    categories: {
+      ESSENTIAL: { name: 'Essential', description: 'Required for basic functionality' },
+      FUNCTIONAL: { name: 'Functional', description: 'Enhanced features' },
+      ANALYTICS: { name: 'Analytics', description: 'Usage statistics' },
+      MARKETING: { name: 'Marketing', description: 'Personalized advertising' },
+      PERSONALIZATION: { name: 'Personalization', description: 'Customized content' },
+      THIRD_PARTY: { name: 'Third Party', description: 'External services' },
+    },
+  },
+}
+
+export function createElement<K extends keyof HTMLElementTagNameMap>(
+  tag: K,
+  styles: Partial<CSSStyleDeclaration> = {},
+  attributes: Record<string, string> = {}
+): HTMLElementTagNameMap[K] {
+  const el = document.createElement(tag)
+  Object.assign(el.style, styles)
+  Object.entries(attributes).forEach(([key, value]) => el.setAttribute(key, value))
+  return el
+}