Delete features (#218)

* Implement company and account deletion features

- Add event types for company and account deletion to CoreEvent.
- Enhance Supabase middleware to handle company context resolution and cookie management for archived companies.
- Create API routes for deleting accounts and companies, including necessary validations and event emissions.
- Implement tests for account and company deletion endpoints to ensure proper functionality and error handling.
- Add retention notice component to inform users about bookkeeping data retention during destructive actions.
- Create database migrations to support soft deletion of companies and anonymization of user accounts, ensuring compliance with retention laws.

* feat: enhance account deletion process and update user notifications

* Add service client for onboarding completion check and update escape hatch visibility

* Enhance invite flow and email handling for company members

* Refactor company context and RLS policies for active company isolation

- Update `switchCompany` to remove unnecessary revalidation as client handles navigation.
- Revise `getActiveCompanyId` to prioritize `user_preferences` and validate against non-archived memberships.
- Modify `setActiveCompany` to ensure `user_preferences` is the authoritative source while maintaining cookie compatibility.
- Enhance middleware to resolve active company using `user_preferences` and fallback to first non-archived membership.
- Introduce new API route `/api/company/current` to fetch the active company ID for cross-tab synchronization.
- Implement `CompanyTabSync` component for real-time active company enforcement across tabs.
- Create migration for RLS policies to enforce single-active-company isolation using `current_active_company_id()`.

* feat: implement viewer role enforcement for write permissions

- Added `useCanWrite` hook to determine if the current user has write permissions based on their role in the active company.
- Updated various components (JournalEntryForm, CustomerForm, DeadlineForm, etc.) to disable write actions and show a lock icon with a tooltip for users without write permissions.
- Introduced `requireWritePermission` function to enforce write permissions at the API level, returning a 403 response for viewers.
- Created tests to verify the behavior of the viewer role and write permissions.
- Added database migration to enforce read-only access for viewers at the database level.

components/import/BankFileConfirmStep.tsx

@@ -10,8 +10,10 @@ import {
   FileText,
   Link2,
   Calendar,
+  Lock,
 } from 'lucide-react'
 import { formatCurrency } from '@/lib/utils'
+import { useCanWrite } from '@/lib/hooks/use-can-write'
 import type { BankFileParseResult } from '@/lib/import/bank-file/types'
 
 interface BankFileConfirmStepProps {
@@ -27,6 +29,7 @@ export default function BankFileConfirmStep({
   onBack,
   isLoading,
 }: BankFileConfirmStepProps) {
+  const { canWrite } = useCanWrite()
   const { transactions, stats, date_from, date_to } = parseResult
   const refsCount = transactions.filter((t) => t.reference).length
 
@@ -123,13 +126,19 @@ export default function BankFileConfirmStep({
             skip_duplicates: true,
             auto_categorize: false,
           })}
-          disabled={isLoading}
+          disabled={isLoading || !canWrite}
+          title={!canWrite ? 'Du har endast läsbehörighet i detta företag' : undefined}
         >
           {isLoading ? (
             <>
               <Loader2 className="mr-2 h-4 w-4 animate-spin" />
               Importerar...
             </>
+          ) : !canWrite ? (
+            <>
+              <Lock className="mr-2 h-4 w-4" />
+              Importera {stats.parsed_rows} transaktioner
+            </>
           ) : (
             <>
               <Play className="mr-2 h-4 w-4" />

components/import/ImportReviewStep.tsx

@@ -21,8 +21,10 @@ import {
   Calendar,
   FileText,
   Database,
+  Lock,
 } from 'lucide-react'
 import { useUnsavedChanges } from '@/lib/hooks/use-unsaved-changes'
+import { useCanWrite } from '@/lib/hooks/use-can-write'
 import type { ImportPreview, AccountMapping } from '@/lib/import/types'
 
 interface ImportReviewStepProps {
@@ -47,6 +49,7 @@ export default function ImportReviewStep({
   onBack,
   isLoading,
 }: ImportReviewStepProps) {
+  const { canWrite } = useCanWrite()
   const [options, setOptions] = useState<ImportExecuteOptions>({
     createFiscalPeriod: true,
     importOpeningBalances: true,
@@ -295,9 +298,15 @@ export default function ImportReviewStep({
         <Button variant="outline" className="min-h-11" onClick={onBack}>
           Tillbaka
         </Button>
-        <Button className="min-h-11" onClick={handleExecute}>
+        <Button
+          className="min-h-11"
+          onClick={handleExecute}
+          disabled={!canWrite || isLoading}
+          title={!canWrite ? 'Du har endast läsbehörighet i detta företag' : undefined}
+        >
+          {!canWrite && <Lock className="mr-2 h-4 w-4" />}
           Starta import
-          <ArrowRight className="ml-2 h-4 w-4" />
+          {canWrite && <ArrowRight className="ml-2 h-4 w-4" />}
         </Button>
       </div>
     </div>