feat: implement comprehensive Form UI library with React Hook Form integration, Zod validation, and i18n support.

apps/web/src/apps/showcase/example/features/form-showcase.tsx

@@ -0,0 +1,169 @@
+import { useState } from 'react';
+import { z } from 'zod';
+import { useForm, FormProvider, type SubmitHandler } from 'react-hook-form';
+import { zodResolver } from '@hookform/resolvers/zod';
+import { Button, Paper, Title, Group, Stack, Code, Text } from '@repo/ui/components';
+
+// Import our RHF-connected Field components from packages/ui
+import { 
+  FieldTextInput, 
+  FieldNumberInput, 
+  FieldSelect, 
+  FieldColorInput,
+  FieldCheckbox,
+  FieldSegmentedControl
+} from '@repo/ui/form'; 
+
+// ─── 1. VALIDATOR SCHEMA WITH JSON I18N PAYLOAD ───────────────────
+const erpOrderSchema = z.object({
+  customerName: z.string().min(3, {
+    message: JSON.stringify({ key: 'validation:min_length', values: { field: 'Nama Pelanggan', min: 3 } })
+  }),
+  email: z.string().email({
+    message: JSON.stringify({ key: 'validation:invalid_email' })
+  }),
+  orderType: z.enum(['BULK', 'RETAIL'], {
+    required_error: JSON.stringify({ key: 'validation:required', values: { field: 'Tipe Pesanan' } })
+  }),
+  quantity: z.number({
+    required_error: JSON.stringify({ key: 'validation:required', values: { field: 'Jumlah Roll' } })
+  }).min(5, {
+    message: JSON.stringify({ key: 'validation:min_length', values: { field: 'Jumlah Roll', min: 5 } })
+  }),
+  fabricColor: z.string().min(1, {
+    message: JSON.stringify({ key: 'validation:required', values: { field: 'Kode Warna Kain' } })
+  }),
+  priority: z.string(),
+  termsAccepted: z.literal(true, {
+    errorMap: () => ({ message: JSON.stringify({ key: 'validation:required', values: { field: 'Persetujuan Syarat & Ketentuan' } }) })
+  })
+});
+
+type ErpOrderPayload = z.infer<typeof erpOrderSchema>;
+
+export default function FormShowcase() {
+  const [submittedData, setSubmittedData] = useState<ErpOrderPayload | null>(null);
+
+  // ─── 2. INITIALIZE REACT HOOK FORM WITH ZOD RESOLVER ─────────────
+  const methods = useForm<ErpOrderPayload>({
+    resolver: zodResolver(erpOrderSchema),
+    defaultValues: {
+      customerName: '',
+      email: '',
+      orderType: 'BULK',
+      quantity: 5,
+      fabricColor: '#228be6',
+      priority: 'normal',
+      // @ts-ignore - literal true is required but we start with false
+      termsAccepted: false,
+    },
+  });
+
+  const onSubmit: SubmitHandler<ErpOrderPayload> = (data) => {
+    setSubmittedData(data);
+  };
+
+  return (
+    <Stack gap="md" style={{ maxWidth: 800, margin: '0 auto', width: '100%' }}>
+      <Paper withBorder p="xl" radius="md" bg="var(--mantine-color-body)">
+        <Title order={3} mb="xs">📦 RHF + Zod + i18n Enterprise Demo</Title>
+        <Text c="dimmed" size="sm" mb="xl">
+          This form demonstrates the integration of our generated Mantine UI wrappers, React Hook Form micro-subscriptions, and Zod validation using JSON i18n payloads.
+        </Text>
+        
+        <FormProvider {...methods}>
+          <form onSubmit={methods.handleSubmit(onSubmit as any)}>
+            <Stack gap="md">
+              
+              <Group grow align="flex-start">
+                <FieldTextInput 
+                  name="customerName" 
+                  label="Nama Pelanggan" 
+                  placeholder="Masukkan nama perusahaan atau perorangan"
+                  withAsterisk
+                />
+
+                <FieldTextInput 
+                  name="email" 
+                  label="Email Korespondensi" 
+                  placeholder="billing@company.com"
+                  withAsterisk
+                />
+              </Group>
+
+              <FieldSegmentedControl
+                name="priority"
+                label="Prioritas Produksi"
+                data={[
+                  { label: 'Normal', value: 'normal' },
+                  { label: 'Urgent', value: 'urgent' },
+                  { label: 'Critical', value: 'critical' }
+                ]}
+              />
+
+              <Group grow align="flex-start">
+                <FieldSelect 
+                  name="orderType" 
+                  label="Tipe Pesanan" 
+                  data={[
+                    { value: 'BULK', label: 'Grosir (Bulk)' },
+                    { value: 'RETAIL', label: 'Eceran (Retail)' }
+                  ]}
+                  withAsterisk
+                />
+
+                <FieldNumberInput 
+                  name="quantity" 
+                  label="Jumlah Produksi (Roll)" 
+                  placeholder="Minimal 5 roll"
+                  withAsterisk
+                />
+              </Group>
+
+              <FieldColorInput 
+                name="fabricColor" 
+                label="Spesifikasi Warna Bahan" 
+                placeholder="Pilih atau masukkan kode HEX warna"
+                withAsterisk
+              />
+
+              <FieldCheckbox
+                name="termsAccepted"
+                label="Saya menyetujui syarat & ketentuan produksi"
+                mt="md"
+              />
+
+              <Group justify="flex-end" mt="xl">
+                <Button 
+                  type="button" 
+                  variant="subtle" 
+                  color="gray" 
+                  onClick={() => {
+                    methods.reset();
+                    setSubmittedData(null);
+                  }}
+                >
+                  Reset Form
+                </Button>
+                <Button type="submit" color="brand">
+                  Submit Payload
+                </Button>
+              </Group>
+
+            </Stack>
+          </form>
+        </FormProvider>
+      </Paper>
+
+      {/* Output Panel untuk pembuktian Payload akhir */}
+      {submittedData && (
+        <Paper withBorder p="md" radius="md" bg="dark.8">
+          <Title order={5} c="green.4" mb="xs">✅ Validated Payload Output (PATCH/POST Ready):</Title>
+          <Code block color="dark" style={{ fontSize: '13px' }}>
+            {JSON.stringify(submittedData, null, 2)}
+          </Code>
+        </Paper>
+      )}
+    </Stack>
+  );
+}

apps/web/src/apps/showcase/showcase-view.tsx

@@ -22,11 +22,12 @@ import {
   Box,
   Paper,
 } from '@repo/ui/components';
-import { ShieldCheck, Database, Lock, Layout, Activity, Printer } from 'lucide-react';
+import { ShieldCheck, Database, Lock, Layout, Activity, Printer, FileText } from 'lucide-react';
 import PrinterList from './printer-list';
 import ExamplePage from './example/example.page';
 import EventsDemoPage from './events-demo';
 import PouchSample from './pouch-sample';
+import FormShowcase from './example/features/form-showcase';
 
 interface ShowcaseViewProps {
   colorScheme: ColorSchemeType;
@@ -55,6 +56,8 @@ export default function ShowcaseView({ colorScheme, setColorScheme, density, set
         return 'Authentication & Security Layers';
       case 'ui-components':
         return 'Theme, Typography, Forms & Data Grids';
+      case 'forms':
+        return 'Enterprise Form Engine & Zod Validation';
       case 'events':
         return 'Global Event Bus Synchronization';
       case 'hardware':
@@ -100,6 +103,9 @@ export default function ShowcaseView({ colorScheme, setColorScheme, density, set
           <Tabs.Tab value="ui-components" leftSection={<Layout size={18} />}>
             UI Components
           </Tabs.Tab>
+          <Tabs.Tab value="forms" leftSection={<FileText size={18} />}>
+            Form Engine
+          </Tabs.Tab>
           <Tabs.Tab value="storage" leftSection={<Database size={18} />}>
             Offline Storage
           </Tabs.Tab>
@@ -277,6 +283,13 @@ export default function ShowcaseView({ colorScheme, setColorScheme, density, set
                 </Stack>
               )}
 
+              {/* --- FORMS TAB --- */}
+              {activeTab === 'forms' && (
+                <Stack gap="xl">
+                  <FormShowcase />
+                </Stack>
+              )}
+
               {/* --- STORAGE TAB --- */}
               {activeTab === 'storage' && (
                 <Stack gap="xl">