feat: UI polish, lint fixes, onboarding redesign, help page expansion, and test improvements

Broad update across dashboard pages, components, extensions, and lib code. Includes ESLint config additions, onboarding flow redesign, settings page refactor, help page content expansion, dead code removal, and test mock fixes. Adds dev docs and public assets.

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

app/api/ai-consent/__tests__/route.test.ts

@@ -31,6 +31,7 @@ function mockAuth(userId: string | null) {
         data: { user: userId ? { id: userId } : null },
       }),
     },
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
   } as any)
 }
 

app/api/audit-trail/__tests__/route.test.ts

@@ -23,6 +23,7 @@ function mockAuth(userId: string | null) {
         data: { user: userId ? { id: userId } : null },
       }),
     },
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
   } as any)
 }
 
@@ -45,9 +46,11 @@ describe('GET /api/audit-trail', () => {
       { id: '1', action: 'INSERT', table_name: 'journal_entries', created_at: '2024-01-01T00:00:00Z' },
       { id: '2', action: 'COMMIT', table_name: 'journal_entries', created_at: '2024-01-02T00:00:00Z' },
     ]
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
     mockGetAuditLog.mockResolvedValue({ data: entries as any, count: 2 })
 
     const req = createMockRequest('/api/audit-trail')
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
     const { status, body } = await parseJsonResponse<{ data: any[]; count: number }>(await GET(req))
 
     expect(status).toBe(200)

app/api/deadlines/[id]/route.ts

@@ -60,7 +60,7 @@ export async function PUT(
   const body: Partial<CreateDeadlineInput> = await request.json()
 
   // First, get existing deadline to verify ownership
-  const { data: existing, error: fetchError } = await supabase
+  const { data: _existing, error: fetchError } = await supabase
     .from('deadlines')
     .select('*')
     .eq('id', id)

app/api/import/bank-file/execute/route.ts

@@ -34,7 +34,7 @@ export async function POST(request: Request) {
   }
 
   const body: ExecuteRequest = await request.json()
-  const { transactions, format, filename, file_hash, skip_duplicates = true, auto_categorize = true } = body
+  const { transactions, format, filename, file_hash, skip_duplicates: _skip_duplicates = true, auto_categorize: _auto_categorize = true } = body
 
   if (!transactions || transactions.length === 0) {
     return NextResponse.json({ error: 'No transactions to import' }, { status: 400 })

app/api/invoices/[id]/mark-paid/__tests__/route.test.ts

@@ -89,7 +89,7 @@ describe('POST /api/invoices/[id]/mark-paid', () => {
 
     const request = createMockRequest('/api/invoices/inv-1/mark-paid', { method: 'POST' })
     const response = await POST(request, createMockRouteParams({ id: 'inv-1' }))
-    const { status, body } = await parseJsonResponse<{ error: string }>(response)
+    const { status, body: _body } = await parseJsonResponse<{ error: string }>(response)
 
     expect(status).toBe(400)
   })

app/api/invoices/route.ts

@@ -4,7 +4,7 @@ import { eventBus } from '@/lib/events'
 import { ensureInitialized } from '@/lib/init'
 import { CreateInvoiceSchema, CreateCreditNoteSchema } from '@/lib/api/schemas'
 import type { EntityType, AccountingMethod, Invoice, CreditNote, InvoiceDocumentType } from '@/types'
-import { getVatRules, calculateVat, calculateTotal, getAvailableVatRates, getVatTreatmentForRate } from '@/lib/invoices/vat-rules'
+import { getVatRules, getAvailableVatRates } from '@/lib/invoices/vat-rules'
 import { fetchExchangeRate, convertToSEK } from '@/lib/currency/riksbanken'
 import {
   createCreditNoteJournalEntry,

app/api/reports/audit-trail/__tests__/route.test.ts

@@ -23,6 +23,7 @@ function mockAuth(userId: string | null) {
         data: { user: userId ? { id: userId } : null },
       }),
     },
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
   } as any)
 }
 
@@ -67,6 +68,7 @@ describe('GET /api/reports/audit-trail', () => {
 
   it('returns CSV format with correct headers', async () => {
     mockAuth('user-1')
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
     mockGetAuditLog.mockResolvedValue({ data: sampleEntries as any, count: 2 })
 
     const req = createMockRequest('/api/reports/audit-trail', {
@@ -88,6 +90,7 @@ describe('GET /api/reports/audit-trail', () => {
 
   it('returns JSON format as downloadable file', async () => {
     mockAuth('user-1')
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
     mockGetAuditLog.mockResolvedValue({ data: sampleEntries as any, count: 2 })
 
     const req = createMockRequest('/api/reports/audit-trail', {
@@ -118,7 +121,9 @@ describe('GET /api/reports/audit-trail', () => {
     }))
 
     mockGetAuditLog
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
       .mockResolvedValueOnce({ data: bigPage as any, count: 600 })
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
       .mockResolvedValueOnce({ data: lastPage as any, count: 600 })
 
     const req = createMockRequest('/api/reports/audit-trail', {

app/api/transactions/[id]/match-supplier-invoice/route.ts

@@ -1,6 +1,5 @@
 import { createClient } from '@/lib/supabase/server'
 import { NextResponse } from 'next/server'
-import { findFiscalPeriod } from '@/lib/bookkeeping/engine'
 import {
   createSupplierInvoicePaymentEntry,
   createSupplierInvoiceCashEntry,
@@ -9,41 +8,6 @@ import { validateBody } from '@/lib/api/validate'
 import { MatchSupplierInvoiceSchema } from '@/lib/api/schemas'
 import type { SupplierInvoice, SupplierInvoiceItem } from '@/types'
 
-/**
- * Ensure a fiscal period exists for the given date
- */
-async function ensureFiscalPeriod(
-  supabase: Awaited<ReturnType<typeof createClient>>,
-  userId: string,
-  date: string
-): Promise<string | null> {
-  const existingPeriodId = await findFiscalPeriod(supabase, userId, date)
-  if (existingPeriodId) return existingPeriodId
-
-  const transactionDate = new Date(date)
-  const year = transactionDate.getFullYear()
-
-  const { data, error } = await supabase
-    .from('fiscal_periods')
-    .upsert({
-      user_id: userId,
-      name: `Räkenskapsår ${year}`,
-      period_start: `${year}-01-01`,
-      period_end: `${year}-12-31`,
-    }, {
-      onConflict: 'user_id,period_start,period_end',
-    })
-    .select('id')
-    .single()
-
-  if (error) {
-    console.error('Failed to create fiscal period:', error)
-    return null
-  }
-
-  return data?.id || null
-}
-
 /**
  * POST /api/transactions/[id]/match-supplier-invoice
  *

app/api/transactions/suggest-categories/route.ts

@@ -1,7 +1,7 @@
 import { createClient } from '@/lib/supabase/server'
 import { NextResponse } from 'next/server'
 import { getSuggestedCategories, mergeAiSuggestions, getSuggestedTemplates, type SuggestedCategory, type SuggestedTemplate } from '@/lib/transactions/category-suggestions'
-import type { Transaction, TransactionCategory, EntityType } from '@/types'
+import type { Transaction, EntityType } from '@/types'
 
 /**
  * POST /api/transactions/suggest-categories