refactor: Admin-Layout komplett entfernt — SDK als einziges Layout

Kaputtes (admin) Layout geloescht (Role-Selection, 404-Sidebar, localhost-Dashboard).
SDK-Flow nach /sdk/sdk-flow verschoben. Route-Gruppe (sdk) aufgeloest.
Root-Seite redirected auf /sdk. ~25 ungenutzte Dateien/Verzeichnisse entfernt.

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

admin-compliance/app/api/development/content/route.ts

@@ -1,68 +0,0 @@
-/**
- * Content API Route
- *
- * GET: Load current website content
- * POST: Save changed content (Admin only)
- */
-
-import { NextRequest, NextResponse } from 'next/server'
-import { getContent, saveContent } from '@/lib/content'
-import type { WebsiteContent } from '@/lib/content-types'
-
-// GET - Load content
-export async function GET() {
-  try {
-    const content = getContent()
-    return NextResponse.json(content)
-  } catch (error) {
-    console.error('Error loading content:', error)
-    return NextResponse.json(
-      { error: 'Failed to load content' },
-      { status: 500 }
-    )
-  }
-}
-
-// POST - Save content
-export async function POST(request: NextRequest) {
-  try {
-    // Simple admin check via header or query
-    // In production: JWT/Session-based auth
-    const adminKey = request.headers.get('x-admin-key')
-    const expectedKey = process.env.ADMIN_API_KEY || 'breakpilot-admin-2024'
-
-    if (adminKey !== expectedKey) {
-      return NextResponse.json(
-        { error: 'Unauthorized' },
-        { status: 401 }
-      )
-    }
-
-    const content: WebsiteContent = await request.json()
-
-    // Validation
-    if (!content.hero || !content.features || !content.faq || !content.pricing) {
-      return NextResponse.json(
-        { error: 'Invalid content structure' },
-        { status: 400 }
-      )
-    }
-
-    const result = saveContent(content)
-
-    if (result.success) {
-      return NextResponse.json({ success: true, message: 'Content saved' })
-    } else {
-      return NextResponse.json(
-        { error: result.error || 'Failed to save content' },
-        { status: 500 }
-      )
-    }
-  } catch (error) {
-    console.error('Error saving content:', error)
-    return NextResponse.json(
-      { error: error instanceof Error ? error.message : 'Failed to save content' },
-      { status: 500 }
-    )
-  }
-}