diff --git a/app/api/extensions/toggles/[sector]/[slug]/route.ts b/app/api/extensions/toggles/[sector]/[slug]/route.ts
index 7b326dc8..3c8df51d 100644
--- a/app/api/extensions/toggles/[sector]/[slug]/route.ts
+++ b/app/api/extensions/toggles/[sector]/[slug]/route.ts
@@ -1,6 +1,15 @@
 import { createClient } from '@/lib/supabase/server'
 import { NextResponse } from 'next/server'
 
+// Legacy general extensions default to enabled when no toggle row exists
+const LEGACY_GENERAL_EXTENSIONS = [
+  'receipt-ocr',
+  'ai-categorization',
+  'ai-chat',
+  'push-notifications',
+  'enable-banking',
+]
+
 export async function GET(
   _request: Request,
   { params }: { params: Promise<{ sector: string; slug: string }> }
@@ -21,7 +30,14 @@ export async function GET(
     .eq('extension_slug', slug)
     .single()
 
-  return NextResponse.json({ data: data ?? { enabled: false } })
+  if (data) {
+    return NextResponse.json({ data })
+  }
+
+  // No toggle row: legacy general extensions default to enabled
+  const defaultEnabled =
+    sector === 'general' && LEGACY_GENERAL_EXTENSIONS.includes(slug)
+  return NextResponse.json({ data: { enabled: defaultEnabled } })
 }
 
 export async function DELETE(
diff --git a/app/api/supplier-invoices/__tests__/route.test.ts b/app/api/supplier-invoices/__tests__/route.test.ts
index 1c9d3c9a..d23e8631 100644
--- a/app/api/supplier-invoices/__tests__/route.test.ts
+++ b/app/api/supplier-invoices/__tests__/route.test.ts
@@ -12,6 +12,10 @@ vi.mock('@/lib/supabase/server', () => ({
   createClient: () => Promise.resolve(mockSupabase),
 }))
 
+vi.mock('@/lib/init', () => ({
+  ensureInitialized: vi.fn(),
+}))
+
 const mockFindFiscalPeriod = vi.fn()
 vi.mock('@/lib/bookkeeping/engine', () => ({
   findFiscalPeriod: (...args: unknown[]) => mockFindFiscalPeriod(...args),
diff --git a/app/api/supplier-invoices/route.ts b/app/api/supplier-invoices/route.ts
index 564c4428..e702d6e3 100644
--- a/app/api/supplier-invoices/route.ts
+++ b/app/api/supplier-invoices/route.ts
@@ -1,8 +1,11 @@
 import { createClient } from '@/lib/supabase/server'
 import { NextResponse } from 'next/server'
 import { createSupplierInvoiceRegistrationEntry } from '@/lib/bookkeeping/supplier-invoice-entries'
+import { ensureInitialized } from '@/lib/init'
 import type { CreateSupplierInvoiceInput, SupplierInvoice, SupplierInvoiceItem } from '@/types'
 
+ensureInitialized()
+
 export async function GET(request: Request) {
   const supabase = await createClient()
 
diff --git a/app/page.tsx b/app/page.tsx
index 39b0883f..9143e22a 100644
--- a/app/page.tsx
+++ b/app/page.tsx
@@ -3,6 +3,7 @@ import { redirect } from 'next/navigation'
 import DashboardNav from '@/components/dashboard/DashboardNav'
 import DashboardContent from '@/components/dashboard/DashboardContent'
 import type { Deadline, ReceiptQueueSummary } from '@/types'
+import { ChatWidget } from '@/components/chat'
 
 export default async function RootPage() {
   const supabase = await createClient()
@@ -190,6 +191,7 @@ export default async function RootPage() {
             }}
           />
         </div>
+        <ChatWidget />
       </main>
     </div>
   )
diff --git a/components/chat/ChatWidget.tsx b/components/chat/ChatWidget.tsx
index ad50594a..c74ea0c0 100644
--- a/components/chat/ChatWidget.tsx
+++ b/components/chat/ChatWidget.tsx
@@ -10,7 +10,6 @@ export function ChatWidget() {
   const [isOpen, setIsOpen] = useState(false)
   // Default to true for legacy compatibility (ai-chat defaults to enabled)
   const [enabled, setEnabled] = useState(true)
-  const [loaded, setLoaded] = useState(false)
 
   // Fetch initial toggle state
   useEffect(() => {
@@ -22,8 +21,8 @@ export function ChatWidget() {
           // Legacy: enabled by default when no toggle row exists
           setEnabled(data?.enabled ?? true)
         }
-      } finally {
-        setLoaded(true)
+      } catch {
+        // Keep default (enabled) on fetch failure
       }
     }
     check()
@@ -42,7 +41,14 @@ export function ChatWidget() {
     return () => window.removeEventListener('extension-toggle-changed', handler)
   }, [])
 
-  if (!loaded || !enabled) return null
+  // Allow other components to open the chat via custom event
+  useEffect(() => {
+    const handler = () => setIsOpen(true)
+    window.addEventListener('open-ai-chat', handler)
+    return () => window.removeEventListener('open-ai-chat', handler)
+  }, [])
+
+  if (!enabled) return null
 
   return (
     <>
diff --git a/components/dashboard/DashboardContent.tsx b/components/dashboard/DashboardContent.tsx
index ce280b6c..97a1362d 100644
--- a/components/dashboard/DashboardContent.tsx
+++ b/components/dashboard/DashboardContent.tsx
@@ -27,6 +27,7 @@ import {
   Landmark,
   CheckCircle2,
   ClipboardList,
+  MessageCircle,
 } from 'lucide-react'
 import type { CompanySettings, EntityType, Deadline, ReceiptQueueSummary, OnboardingProgress } from '@/types'
 
@@ -179,6 +180,8 @@ export default function DashboardContent({ firstName, settings, summary, onboard
   const visibleAlerts = showAllAlerts ? alertItems : alertItems.slice(0, MAX_VISIBLE_ALERTS)
   const hasMoreAlerts = alertItems.length > MAX_VISIBLE_ALERTS
 
+  const openAiChat = () => window.dispatchEvent(new Event('open-ai-chat'))
+
   // Quick action items
   const quickActions = [
     { href: '/invoices/new', icon: Receipt, label: 'Ny faktura', desc: 'Skapa och skicka', accent: true },
@@ -400,6 +403,18 @@ export default function DashboardContent({ firstName, settings, summary, onboard
               </Link>
             )
           })}
+          {/* AI assistant quick action */}
+          <button onClick={openAiChat} className="group text-left">
+            <div className="flex items-center gap-3 px-4 py-3 rounded-xl border border-border/40 hover:bg-muted/30 transition-colors duration-150">
+              <div className="p-2 rounded-lg bg-muted/50">
+                <MessageCircle className="h-4 w-4 text-muted-foreground" />
+              </div>
+              <div className="min-w-0">
+                <p className="text-sm font-medium truncate">AI-assistent</p>
+                <p className="text-xs text-muted-foreground truncate hidden md:block">Fråga om bokföring</p>
+              </div>
+            </div>
+          </button>
         </div>
       </section>
 
diff --git a/lib/core/documents/__tests__/document-service.test.ts b/lib/core/documents/__tests__/document-service.test.ts
index 3168f4d6..916b36cc 100644
--- a/lib/core/documents/__tests__/document-service.test.ts
+++ b/lib/core/documents/__tests__/document-service.test.ts
@@ -25,6 +25,8 @@ function makeClient(storageOverrides: Record<string, unknown> = {}) {
     from: vi.fn().mockImplementation(() => makeBuilder()),
     rpc: vi.fn().mockImplementation(async () => results[resultIdx++] ?? { data: null, error: null }),
     storage: {
+      getBucket: vi.fn().mockResolvedValue({ data: { id: 'documents' }, error: null }),
+      createBucket: vi.fn().mockResolvedValue({ data: { name: 'documents' }, error: null }),
       from: vi.fn().mockReturnValue({
         upload: vi.fn().mockResolvedValue({ data: {}, error: null }),
         download: vi.fn().mockResolvedValue({
@@ -43,14 +45,16 @@ function makeClient(storageOverrides: Record<string, unknown> = {}) {
 
 vi.mock('@/lib/supabase/server', () => ({
   createClient: vi.fn(async () => makeClient()),
+  createServiceClient: vi.fn(async () => makeClient()),
 }))
 
-import { uploadDocument, createNewVersion, verifyIntegrity } from '../document-service'
+import { uploadDocument, createNewVersion, verifyIntegrity, _resetBucketVerified } from '../document-service'
 import { createClient } from '@/lib/supabase/server'
 
 beforeEach(() => {
   vi.clearAllMocks()
   eventBus.clear()
+  _resetBucketVerified()
   resultIdx = 0
   results = []
   // Reset the mock to use default makeClient
diff --git a/lib/core/documents/document-service.ts b/lib/core/documents/document-service.ts
index 01a3afc8..1a307b90 100644
--- a/lib/core/documents/document-service.ts
+++ b/lib/core/documents/document-service.ts
@@ -1,4 +1,4 @@
-import { createClient } from '@/lib/supabase/server'
+import { createClient, createServiceClient } from '@/lib/supabase/server'
 import { eventBus } from '@/lib/events'
 import type { DocumentAttachment, CreateDocumentAttachmentInput, DocumentUploadSource } from '@/types'
 
@@ -10,6 +10,33 @@ import type { DocumentAttachment, CreateDocumentAttachmentInput, DocumentUploadS
  * for documents linked to committed entries.
  */
 
+let bucketVerified = false
+
+/** @internal Reset bucket verification flag — for testing only */
+export function _resetBucketVerified() {
+  bucketVerified = false
+}
+
+/**
+ * Ensure the 'documents' storage bucket exists, creating it if missing.
+ * Runs once per process lifetime (same pattern as ensureInitialized).
+ */
+async function ensureDocumentsBucket(): Promise<void> {
+  if (bucketVerified) return
+
+  const supabase = await createServiceClient()
+  const { data: bucket } = await supabase.storage.getBucket('documents')
+
+  if (!bucket) {
+    await supabase.storage.createBucket('documents', {
+      public: false,
+      fileSizeLimit: 52428800, // 50 MB
+    })
+  }
+
+  bucketVerified = true
+}
+
 /**
  * Compute SHA-256 hash of a file buffer
  */
@@ -31,6 +58,7 @@ export async function uploadDocument(
     journal_entry_line_id?: string
   } = {}
 ): Promise<DocumentAttachment> {
+  await ensureDocumentsBucket()
   const supabase = await createClient()
 
   // Compute SHA-256 hash
@@ -102,6 +130,7 @@ export async function createNewVersion(
   originalId: string,
   file: { name: string; buffer: ArrayBuffer; type?: string }
 ): Promise<DocumentAttachment> {
+  await ensureDocumentsBucket()
   const supabase = await createClient()
 
   // Compute SHA-256 hash