Fix all ESLint errors: remove unused imports, replace any types

- Remove ~60 unused imports and variables across 88 files
- Replace ~80 `any` type annotations with proper types (unknown,
  Record<string, unknown>, or specific types)
- Prefix unused callback args with underscore
- Fix unescaped JSX entities
- Lint now passes cleanly (0 errors, 2 intentional img warnings)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/app/(dashboard)/[portSlug]/documents/page.tsx

@@ -1,7 +1,6 @@
 'use client';
 
 import { useState } from 'react';
-import { useParams } from 'next/navigation';
 import { Grid, List, Upload } from 'lucide-react';
 import { useQueryClient } from '@tanstack/react-query';
 
@@ -19,13 +18,12 @@ import { apiFetch } from '@/lib/api/client';
 import type { FileRow } from '@/components/files/file-grid';
 
 export default function DocumentsPage() {
-  const params = useParams<{ portSlug: string }>();
   const queryClient = useQueryClient();
 
   const { viewMode, setViewMode, currentFolder, setCurrentFolder } = useFileBrowserStore();
   const [showUpload, setShowUpload] = useState(false);
   const [previewFile, setPreviewFile] = useState<FileRow | null>(null);
-  const [renameFile, setRenameFile] = useState<FileRow | null>(null);
+  const [, setRenameFile] = useState<FileRow | null>(null);
 
   const { data, isLoading } = usePaginatedQuery<FileRow & { storagePath: string }>({
     queryKey: ['files'],

src/app/(dashboard)/[portSlug]/expenses/page.tsx

@@ -1,7 +1,7 @@
 'use client';
 
 import { useState } from 'react';
-import { useParams, useRouter } from 'next/navigation';
+import { useParams } from 'next/navigation';
 import { Plus, Download, FileText, FileSpreadsheet } from 'lucide-react';
 import { useMutation, useQueryClient } from '@tanstack/react-query';
 

src/app/(dashboard)/[portSlug]/expenses/scan/page.tsx

@@ -3,7 +3,7 @@
 import { useState, useRef } from 'react';
 import { useParams, useRouter } from 'next/navigation';
 import { useMutation } from '@tanstack/react-query';
-import { Upload, Loader2, Camera, ScanLine } from 'lucide-react';
+import { Upload, Loader2, ScanLine } from 'lucide-react';
 
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';

src/app/(dashboard)/[portSlug]/invoices/new/page.tsx

@@ -4,7 +4,7 @@ import { useState } from 'react';
 import { useParams, useRouter } from 'next/navigation';
 import { useForm, FormProvider } from 'react-hook-form';
 import { zodResolver } from '@hookform/resolvers/zod';
-import { useMutation, useQuery } from '@tanstack/react-query';
+import { useMutation } from '@tanstack/react-query';
 import { ChevronLeft, ChevronRight, Check, Loader2 } from 'lucide-react';
 
 import { Button } from '@/components/ui/button';
@@ -19,7 +19,6 @@ import {
   SelectValue,
 } from '@/components/ui/select';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
-import { Badge } from '@/components/ui/badge';
 import { InvoiceLineItems } from '@/components/invoices/invoice-line-items';
 import { apiFetch } from '@/lib/api/client';
 import { createInvoiceSchema, type CreateInvoiceInput } from '@/lib/validators/invoices';
@@ -75,7 +74,7 @@ export default function NewInvoicePage() {
         method: 'POST',
         body: data,
       }),
-    onSuccess: (res: any) => {
+    onSuccess: (res: { data?: { id?: string } }) => {
       const id = res?.data?.id;
       if (id) {
         router.push(`/${portSlug}/invoices/${id}`);
@@ -217,7 +216,7 @@ export default function NewInvoicePage() {
                     <Label>Payment Terms</Label>
                     <Select
                       defaultValue="net30"
-                      onValueChange={(v) => setValue('paymentTerms', v as any)}
+                      onValueChange={(v) => setValue('paymentTerms', v as CreateInvoiceInput['paymentTerms'])}
                     >
                       <SelectTrigger>
                         <SelectValue placeholder="Select terms" />
@@ -266,7 +265,7 @@ export default function NewInvoicePage() {
                 <InvoiceLineItems name="lineItems" />
                 {errors.lineItems && !Array.isArray(errors.lineItems) && (
                   <p className="text-xs text-destructive mt-2">
-                    {(errors.lineItems as any).message}
+                    {(errors.lineItems as { message?: string }).message}
                   </p>
                 )}
                 {errors.root && (

src/app/(portal)/layout.tsx

@@ -1,5 +1,4 @@
 import type { Metadata } from 'next';
-import { redirect } from 'next/navigation';
 
 import { getPortalSession } from '@/lib/portal/auth';
 import { getPortalDashboard } from '@/lib/services/portal.service';
@@ -13,8 +12,6 @@ export const metadata: Metadata = {
   },
 };
 
-const PUBLIC_PORTAL_PATHS = ['/portal/login', '/portal/verify'];
-
 export default async function PortalLayout({
   children,
 }: {

src/app/(portal)/portal/login/page.tsx

@@ -26,7 +26,7 @@ export default function PortalLoginPage() {
 
       if (!res.ok) {
         const data = await res.json().catch(() => ({}));
-        setError((data as any).error ?? 'Something went wrong. Please try again.');
+        setError((data as { error?: string }).error ?? 'Something went wrong. Please try again.');
         return;
       }
 

src/app/(portal)/portal/verify/page.tsx

@@ -16,7 +16,7 @@ export default function PortalVerifyPage() {
     const token = searchParams.get('token');
 
     if (!token) {
-      router.replace('/portal/login?error=missing_token' as any);
+      router.replace('/portal/login?error=missing_token');
       return;
     }
 

src/app/api/v1/document-templates/merge-fields/route.ts

@@ -5,7 +5,7 @@ import { errorResponse } from '@/lib/errors';
 import { getMergeFields } from '@/lib/services/document-templates';
 
 export const GET = withAuth(
-  withPermission('documents', 'view', async (req, ctx) => {
+  withPermission('documents', 'view', async (_req, _ctx) => {
     try {
       const mergeFields = getMergeFields();
       return NextResponse.json({ data: mergeFields });

src/app/api/v1/expenses/export/csv/route.ts

@@ -1,7 +1,6 @@
 import { NextResponse } from 'next/server';
 
 import { withAuth, withPermission } from '@/lib/api/helpers';
-import { parseBody } from '@/lib/api/route-helpers';
 import { errorResponse } from '@/lib/errors';
 import { exportCsv } from '@/lib/services/expense-export';
 import { listExpensesSchema } from '@/lib/validators/expenses';

src/app/api/webhooks/documenso/route.ts

@@ -2,7 +2,6 @@ import { NextRequest, NextResponse } from 'next/server';
 import { createHash } from 'crypto';
 
 import { db } from '@/lib/db';
-import { documentEvents } from '@/lib/db/schema/documents';
 import { verifyDocumensoSignature } from '@/lib/services/documenso-webhook';
 import {
   handleRecipientSigned,