added init page

apps/frontend/app/routes/init.tsx

@@ -0,0 +1,170 @@
+import { Box, Container, Flex, Heading, Text } from '@radix-ui/themes';
+import { useMutation, useQuery } from '@tanstack/react-query';
+import { useNavigate } from 'react-router';
+import { Slide, toast, ToastContainer } from 'react-toastify';
+import * as v from 'valibot';
+import { useResponseErrorHandler } from '../hooks/ResponseHelper';
+import { useApi } from '../providers/ApiProvider';
+import { formHook } from '../providers/FormProvider';
+import { TooltipContentContainer } from '../components/info';
+import { SearchParamKeys } from '../lib/constants';
+
+const initFormSchema = v.object({
+  username: v.pipe(v.string(), v.trim(), v.minLength(1, 'Username is required')),
+  password: v.pipe(v.string(), v.minLength(1, 'Password is required')),
+  setup_secret: v.pipe(v.string(), v.minLength(1, 'Setup secret is required')),
+});
+
+export default function InitRoute() {
+  const navigate = useNavigate();
+  const { tanstackApiClient } = useApi();
+  const { defaultResponseErrorHandler } = useResponseErrorHandler();
+
+  const { mutateAsync: initAdmin, isPending } = useMutation({
+    ...tanstackApiClient.mutation('post', '/api/auth/init_admin').mutationOptions,
+    onSuccess: async () => {
+      const searchParams = new URLSearchParams();
+      searchParams.set(SearchParamKeys.Message, 'Initialization successful. Please log in.');
+      navigate(`/login?${searchParams.toString()}`);
+    },
+    onError: (error) => {
+      if (defaultResponseErrorHandler(error)) return;
+      console.error('Init failed:', error);
+    },
+  });
+
+  const { queryOptions: healthInfoQuery } = tanstackApiClient.get('/api/health/info');
+  useQuery({
+    ...healthInfoQuery,
+    queryFn: async (...args) => {
+      try {
+        const data = await healthInfoQuery.queryFn!(...args);
+        if (data.is_initialized) {
+          navigate('/');
+          return data;
+        }
+        return data;
+      } catch (error) {
+        if (defaultResponseErrorHandler(error)) return {} as never;
+        throw error;
+      }
+    },
+  });
+
+  const form = formHook.useAppForm({
+    defaultValues: { username: '', password: '', setup_secret: '' },
+    validators: { onBlur: initFormSchema, onSubmit: initFormSchema },
+    onSubmit: async ({ value }) => {
+      toast.dismiss();
+      return await initAdmin({ body: { username: value.username, password: value.password, setup_secret: value.setup_secret } });
+    },
+  });
+
+  return (
+    <>
+      <Flex align="center" justify="center" style={{ minHeight: 'calc(100vh - 64px)' }}>
+        <Container size="3" p="0">
+          <Box
+            style={{
+              display: 'flex',
+              flexDirection: 'column',
+              maxWidth: 480,
+              margin: '40px auto',
+              backgroundColor: 'white',
+              padding: 24,
+              borderRadius: 8,
+              boxShadow: '0 6px 18px rgba(15,23,42,0.06)',
+            }}
+          >
+            <Heading size="6" style={{ marginBottom: 12, alignSelf: 'center' }}>
+              Initialize YANPM
+            </Heading>
+
+            <Heading size="3" style={{ marginBottom: 24, color: 'var(--gray-11)', alignSelf: 'center' }}>
+              Create the initial admin user
+            </Heading>
+            <form
+              onSubmit={(e) => {
+                e.preventDefault();
+                form.handleSubmit();
+              }}
+            >
+              <form.AppField
+                name="username"
+                children={(field) => (
+                  <>
+                    <field.TextField
+                      label="Username"
+                      value={field.state.value}
+                      autoComplete="username"
+                      spellCheck={false}
+                      required
+                      onChange={(e) => field.handleChange(e.target.value)}
+                    />
+                    <field.TextFieldErrorMessage {...field.state.meta} />
+                  </>
+                )}
+              />
+
+              <form.AppField
+                name="password"
+                children={(field) => (
+                  <>
+                    <field.TextField
+                      label="Password"
+                      value={field.state.value}
+                      type="password"
+                      required
+                      autoComplete="new-password"
+                      onChange={(e) => field.handleChange(e.target.value)}
+                      showPasswordToggle
+                    />
+                    <field.TextFieldErrorMessage {...field.state.meta} />
+                  </>
+                )}
+              />
+
+              <form.AppField
+                name="setup_secret"
+                children={(field) => (
+                  <>
+                    <field.TextField
+                      label="Setup Secret"
+                      value={field.state.value}
+                      required
+                      onChange={(e) => field.handleChange(e.target.value)}
+                      infoIconProps={{
+                        children: (
+                          <TooltipContentContainer>
+                            <Text>This secret is provided when the API server is first started. Refer to your server logs to find it.</Text>
+                          </TooltipContentContainer>
+                        ),
+                      }}
+                    />
+                    <field.TextFieldErrorMessage {...field.state.meta} />
+                  </>
+                )}
+              />
+
+              <div style={{ marginTop: 18, display: 'flex', gap: 8, justifySelf: 'center' }}>
+                <form.SubmitButton loading={isPending} label={{ default: 'Initialize' }} />
+              </div>
+            </form>
+          </Box>
+        </Container>
+      </Flex>
+
+      <ToastContainer
+        position="top-center"
+        autoClose={false}
+        newestOnTop={false}
+        closeOnClick
+        rtl={false}
+        pauseOnFocusLoss
+        draggable={false}
+        theme="colored"
+        transition={Slide}
+      />
+    </>
+  );
+}