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/deadlines/DeadlineForm.tsx

@@ -21,6 +21,8 @@ import {
 } from '@/components/ui/select'
 import { Deadline, DeadlineType, DeadlinePriority } from '@/types'
 import { formatDateISO, DEADLINE_TYPE_LABELS, PRIORITY_LABELS } from '@/lib/calendar/utils'
+import { useCanWrite } from '@/lib/hooks/use-can-write'
+import { Lock } from 'lucide-react'
 
 interface DeadlineFormProps {
   open: boolean
@@ -41,6 +43,7 @@ export function DeadlineForm({
   initialDate,
   customers,
 }: DeadlineFormProps) {
+  const { canWrite } = useCanWrite()
   const [confirmDelete, setConfirmDelete] = useState(false)
   const [isLoading, setIsLoading] = useState(false)
   const [formData, setFormData] = useState({
@@ -300,7 +303,12 @@ export function DeadlineForm({
               >
                 Avbryt
               </Button>
-              <Button type="submit" disabled={isLoading || !formData.title}>
+              <Button
+                type="submit"
+                disabled={isLoading || !formData.title || !canWrite}
+                title={!canWrite ? 'Du har endast läsbehörighet i detta företag' : undefined}
+              >
+                {!canWrite && <Lock className="mr-2 h-4 w-4" />}
                 {isLoading ? 'Sparar...' : initialData?.id ? 'Spara' : 'Skapa'}
               </Button>
             </div>

components/deadlines/DeadlineList.tsx

@@ -7,7 +7,8 @@ import { DeadlineCard } from './DeadlineCard'
 import { DeadlineFilters } from './DeadlineFilters'
 import { DeadlineForm } from './DeadlineForm'
 import { isDeadlineOverdue } from '@/lib/calendar/utils'
-import { Plus } from 'lucide-react'
+import { Plus, Lock } from 'lucide-react'
+import { useCanWrite } from '@/lib/hooks/use-can-write'
 
 interface DeadlineListProps {
   deadlines: Deadline[]
@@ -26,6 +27,7 @@ export function DeadlineList({
   onDeadlineEdit,
   onDeadlineDelete,
 }: DeadlineListProps) {
+  const { canWrite } = useCanWrite()
   const [statusFilter, setStatusFilter] = useState<'all' | 'pending' | 'completed'>('pending')
   const [typeFilter, setTypeFilter] = useState<DeadlineType | 'all'>('all')
   const [showForm, setShowForm] = useState(false)
@@ -105,8 +107,16 @@ export function DeadlineList({
           onTypeChange={setTypeFilter}
           onReset={handleResetFilters}
         />
-        <Button onClick={() => setShowForm(true)}>
-          <Plus className="h-4 w-4 mr-2" />
+        <Button
+          onClick={() => setShowForm(true)}
+          disabled={!canWrite}
+          title={!canWrite ? 'Du har endast läsbehörighet i detta företag' : undefined}
+        >
+          {canWrite ? (
+            <Plus className="h-4 w-4 mr-2" />
+          ) : (
+            <Lock className="h-4 w-4 mr-2" />
+          )}
           Ny deadline
         </Button>
       </div>
@@ -124,8 +134,14 @@ export function DeadlineList({
             size="sm"
             className="mt-4"
             onClick={() => setShowForm(true)}
+            disabled={!canWrite}
+            title={!canWrite ? 'Du har endast läsbehörighet i detta företag' : undefined}
           >
-            <Plus className="h-3.5 w-3.5 mr-1.5" />
+            {canWrite ? (
+              <Plus className="h-3.5 w-3.5 mr-1.5" />
+            ) : (
+              <Lock className="h-3.5 w-3.5 mr-1.5" />
+            )}
             Skapa en deadline
           </Button>
         </div>