refactor: clean up codebase, remove dead code and obsolete docs

Remove influencer-era documentation, unused components, boilerplate
assets, and ghost tiktok cron job. Add supplier invoice management,
document API routes, and PWA icons. Replace boilerplate README.

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

app/api/extensions/receipt-ocr/upload/route.ts

@@ -4,6 +4,7 @@ import { analyzeReceipt } from '@/extensions/receipt-ocr/lib/receipt-analyzer'
 import { processLineItems } from '@/extensions/receipt-ocr/lib/receipt-categorizer'
 import { eventBus } from '@/lib/events/bus'
 import { ensureInitialized } from '@/lib/init'
+import { uploadDocument } from '@/lib/core/documents/document-service'
 
 ensureInitialized()
 
@@ -63,6 +64,17 @@ export async function POST(request: Request) {
       return NextResponse.json({ error: 'Failed to upload image' }, { status: 500 })
     }
 
+    // WORM archive copy (non-blocking — receipt flow continues even if this fails)
+    try {
+      await uploadDocument(user.id, {
+        name: imageFile.name,
+        buffer: arrayBuffer,
+        type: imageFile.type,
+      }, { upload_source: 'camera' })
+    } catch (archiveErr) {
+      console.error('[receipt-upload] WORM archive copy failed:', archiveErr)
+    }
+
     // Get public URL
     const { data: urlData } = supabase.storage.from('receipts').getPublicUrl(filename)
     const imageUrl = urlData.publicUrl