feat(mobile): touch up new-invoice + scan-receipt forms

- new invoice: push "New Invoice" to mobile topbar, hide the
    redundant inline back+title row on mobile.
  - scan receipt: dedicated "Take photo" primary button on mobile
    (uses input capture="environment" to open the camera directly)
    plus "Choose from library" secondary. Drop-zone framing kept on
    desktop. Push "Scan Receipt" title to mobile topbar.

Both forms now take their entity title from the topbar and free up
real-estate at the top for actual content.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

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

@@ -1,9 +1,11 @@
 'use client';
 
-import { useState, useRef } from 'react';
+import { useEffect, useRef, useState } from 'react';
 import { useParams, useRouter } from 'next/navigation';
 import { useMutation } from '@tanstack/react-query';
-import { Upload, Loader2, ScanLine } from 'lucide-react';
+import { Camera, Loader2, ScanLine, Upload } from 'lucide-react';
+
+import { useMobileChrome } from '@/components/layout/mobile/mobile-layout-provider';
 
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
@@ -33,9 +35,16 @@ export default function ScanReceiptPage() {
   const router = useRouter();
   const fileInputRef = useRef<HTMLInputElement>(null);
 
+  const cameraInputRef = useRef<HTMLInputElement>(null);
   const [scanResult, setScanResult] = useState<ScanResult | null>(null);
   const [previewUrl, setPreviewUrl] = useState<string | null>(null);
 
+  const { setChrome } = useMobileChrome();
+  useEffect(() => {
+    setChrome({ title: 'Scan Receipt', showBackButton: true });
+    return () => setChrome({ title: null, showBackButton: false });
+  }, [setChrome]);
+
   // Editable fields from scan
   const [establishment, setEstablishment] = useState('');
   const [amount, setAmount] = useState('');
@@ -94,7 +103,7 @@ export default function ScanReceiptPage() {
 
   return (
     <div className="max-w-2xl mx-auto space-y-6">
-      <div>
+      <div className="hidden sm:block">
         <h1 className="text-2xl font-bold">Scan Receipt</h1>
         <p className="text-muted-foreground mt-1">
           Upload a receipt image and we will extract the expense details automatically.
@@ -109,28 +118,44 @@ export default function ScanReceiptPage() {
           </CardTitle>
         </CardHeader>
         <CardContent>
+          {previewUrl ? (
             <div
-            className="border-2 border-dashed rounded-lg p-8 text-center cursor-pointer hover:bg-muted/50 transition-colors"
+              className="border-2 border-dashed rounded-lg p-4 text-center cursor-pointer hover:bg-muted/50 transition-colors"
               onClick={() => fileInputRef.current?.click()}
             >
-            {previewUrl ? (
               <img
                 src={previewUrl}
                 alt="Receipt preview"
                 className="max-h-64 mx-auto rounded object-contain"
               />
+            </div>
           ) : (
-              <div className="space-y-2">
-                <Upload className="h-8 w-8 mx-auto text-muted-foreground" />
-                <p className="text-sm text-muted-foreground">
-                  Click to upload or drag and drop
-                </p>
-                <p className="text-xs text-muted-foreground">
+            <div className="grid gap-2 sm:grid-cols-2">
+              <Button
+                type="button"
+                size="lg"
+                className="w-full h-14 sm:hidden"
+                onClick={() => cameraInputRef.current?.click()}
+              >
+                <Camera className="mr-2 h-5 w-5" />
+                Take photo
+              </Button>
+              <Button
+                type="button"
+                variant="outline"
+                size="lg"
+                className="w-full h-14"
+                onClick={() => fileInputRef.current?.click()}
+              >
+                <Upload className="mr-2 h-5 w-5" />
+                <span className="sm:hidden">Choose from library</span>
+                <span className="hidden sm:inline">Click to upload or drag and drop</span>
+              </Button>
+              <p className="text-xs text-muted-foreground sm:col-span-2 text-center">
                 JPEG, PNG, WebP up to 10MB
               </p>
             </div>
           )}
-          </div>
           <input
             ref={fileInputRef}
             type="file"
@@ -138,6 +163,14 @@ export default function ScanReceiptPage() {
             className="hidden"
             onChange={handleFileChange}
           />
+          <input
+            ref={cameraInputRef}
+            type="file"
+            accept="image/*"
+            capture="environment"
+            className="hidden"
+            onChange={handleFileChange}
+          />
 
           {scanMutation.isPending && (
             <div className="flex items-center justify-center gap-2 mt-4 text-muted-foreground">
@@ -222,25 +255,18 @@ export default function ScanReceiptPage() {
             </div>
 
             {saveMutation.isError && (
-              <p className="text-sm text-destructive">
-                {(saveMutation.error as Error).message}
-              </p>
+              <p className="text-sm text-destructive">{(saveMutation.error as Error).message}</p>
             )}
 
             <div className="flex gap-2 pt-2">
-              <Button
-                variant="outline"
-                onClick={() => router.push(`/${params.portSlug}/expenses`)}
-              >
+              <Button variant="outline" onClick={() => router.push(`/${params.portSlug}/expenses`)}>
                 Cancel
               </Button>
               <Button
                 onClick={() => saveMutation.mutate()}
                 disabled={saveMutation.isPending || !amount}
               >
-                {saveMutation.isPending && (
-                  <Loader2 className="mr-2 h-4 w-4 animate-spin" />
-                )}
+                {saveMutation.isPending && <Loader2 className="mr-2 h-4 w-4 animate-spin" />}
                 Save as Expense
               </Button>
             </div>

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

@@ -1,12 +1,14 @@
 'use client';
 
-import { useState } from 'react';
+import { useEffect, useState } from 'react';
 import { useParams, useRouter } from 'next/navigation';
 import { useForm, FormProvider } from 'react-hook-form';
 import { zodResolver } from '@hookform/resolvers/zod';
 import { useMutation } from '@tanstack/react-query';
 import { ChevronLeft, ChevronRight, Check, Loader2 } from 'lucide-react';
 
+import { useMobileChrome } from '@/components/layout/mobile/mobile-layout-provider';
+
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
 import { Label } from '@/components/ui/label';
@@ -46,6 +48,12 @@ export default function NewInvoicePage() {
 
   const [step, setStep] = useState(1);
 
+  const { setChrome } = useMobileChrome();
+  useEffect(() => {
+    setChrome({ title: 'New Invoice', showBackButton: true });
+    return () => setChrome({ title: null, showBackButton: false });
+  }, [setChrome]);
+
   const methods = useForm<CreateInvoiceInput>({
     resolver: zodResolver(createInvoiceSchema),
     defaultValues: {
@@ -117,8 +125,8 @@ export default function NewInvoicePage() {
 
   return (
     <div className="max-w-2xl mx-auto space-y-6">
-      {/* Header */}
-      <div className="flex items-center gap-3">
+      {/* Header — desktop only; mobile gets the title from the topbar */}
+      <div className="hidden sm:flex items-center gap-3">
         <Button variant="ghost" size="sm" onClick={() => router.push(`/${portSlug}/invoices`)}>
           <ChevronLeft className="h-4 w-4" />
         </Button>