feat: Add Compliance Wiki as internal admin knowledge base

Migration 040 with wiki_categories + wiki_articles tables, 10 seed
articles across 8 categories (DSGVO, Art. 9, AVV, HinSchG etc.).
Read-only FastAPI API, Next.js proxy, and two-column frontend with
full-text search.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

admin-compliance/lib/sdk/api-client.ts

@@ -5,7 +5,7 @@
  * retry logic, and optimistic locking support.
  */
 
-import { SDKState, CheckpointStatus, ProjectInfo } from './types'
+import { SDKState, CheckpointStatus, ProjectInfo, WikiCategory, WikiArticle, WikiSearchResult } from './types'
 
 // =============================================================================
 // TYPES
@@ -730,6 +730,110 @@ export class SDKApiClient {
     )
   }
 
+  // ===========================================================================
+  // WIKI (read-only knowledge base)
+  // ===========================================================================
+
+  /**
+   * List all wiki categories with article counts
+   */
+  async listWikiCategories(): Promise<WikiCategory[]> {
+    const data = await this.fetchWithRetry<{ categories: Array<{
+      id: string; name: string; description: string; icon: string;
+      sort_order: number; article_count: number
+    }> }>(
+      `${this.baseUrl}/wiki?endpoint=categories`,
+      { method: 'GET' }
+    )
+    return (data.categories || []).map(c => ({
+      id: c.id,
+      name: c.name,
+      description: c.description,
+      icon: c.icon,
+      sortOrder: c.sort_order,
+      articleCount: c.article_count,
+    }))
+  }
+
+  /**
+   * List wiki articles, optionally filtered by category
+   */
+  async listWikiArticles(categoryId?: string): Promise<WikiArticle[]> {
+    const params = new URLSearchParams({ endpoint: 'articles' })
+    if (categoryId) params.set('category_id', categoryId)
+    const data = await this.fetchWithRetry<{ articles: Array<{
+      id: string; category_id: string; category_name: string; title: string;
+      summary: string; content: string; legal_refs: string[]; tags: string[];
+      relevance: string; source_urls: string[]; version: number; updated_at: string
+    }> }>(
+      `${this.baseUrl}/wiki?${params.toString()}`,
+      { method: 'GET' }
+    )
+    return (data.articles || []).map(a => ({
+      id: a.id,
+      categoryId: a.category_id,
+      categoryName: a.category_name,
+      title: a.title,
+      summary: a.summary,
+      content: a.content,
+      legalRefs: a.legal_refs || [],
+      tags: a.tags || [],
+      relevance: a.relevance as WikiArticle['relevance'],
+      sourceUrls: a.source_urls || [],
+      version: a.version,
+      updatedAt: a.updated_at,
+    }))
+  }
+
+  /**
+   * Get a single wiki article by ID
+   */
+  async getWikiArticle(id: string): Promise<WikiArticle> {
+    const data = await this.fetchWithRetry<{
+      id: string; category_id: string; category_name: string; title: string;
+      summary: string; content: string; legal_refs: string[]; tags: string[];
+      relevance: string; source_urls: string[]; version: number; updated_at: string
+    }>(
+      `${this.baseUrl}/wiki?endpoint=article&id=${encodeURIComponent(id)}`,
+      { method: 'GET' }
+    )
+    return {
+      id: data.id,
+      categoryId: data.category_id,
+      categoryName: data.category_name,
+      title: data.title,
+      summary: data.summary,
+      content: data.content,
+      legalRefs: data.legal_refs || [],
+      tags: data.tags || [],
+      relevance: data.relevance as WikiArticle['relevance'],
+      sourceUrls: data.source_urls || [],
+      version: data.version,
+      updatedAt: data.updated_at,
+    }
+  }
+
+  /**
+   * Full-text search across wiki articles
+   */
+  async searchWiki(query: string): Promise<WikiSearchResult[]> {
+    const data = await this.fetchWithRetry<{ results: Array<{
+      id: string; title: string; summary: string; category_name: string;
+      relevance: string; highlight: string
+    }> }>(
+      `${this.baseUrl}/wiki?endpoint=search&q=${encodeURIComponent(query)}`,
+      { method: 'GET' }
+    )
+    return (data.results || []).map(r => ({
+      id: r.id,
+      title: r.title,
+      summary: r.summary,
+      categoryName: r.category_name,
+      relevance: r.relevance,
+      highlight: r.highlight,
+    }))
+  }
+
   /**
    * Health check
    */