feat: 新增引导页/登录页并接通入口漏斗

- app/index.tsx 总闸门：引导→登录→选择身份→对应端（Redirect 漏斗）
- app/guide.tsx 引导页（4 屏职来核心能力，分页+跳过+立即体验）
- app/login.tsx 登录页（手机号+验证码倒计时、协议勾选、其他登录、游客浏览）
- _layout 包 AuthProvider 并注册 guide/login/index 屏
- 避开 onboarding.tsx（入职清单功能页），引导页命名为 guide.tsx

app/_layout.tsx

@@ -1,17 +1,22 @@
 import { Stack } from 'expo-router';
 import { StatusBar } from 'expo-status-bar';
 import { RoleProvider } from '../src/context/RoleContext';
+import { AuthProvider } from '../src/context/AuthContext';
 
 /**
  * 根布局：用 Stack 包裹整个应用，Tab 组不显示顶部 header
  */
 export default function RootLayout() {
   return (
-    <RoleProvider>
-      <StatusBar style="dark" />
-      <Stack>
-        <Stack.Screen name="(tabs)" options={{ headerShown: false }} />
-        <Stack.Screen name="(enterprise)" options={{ headerShown: false }} />
+    <AuthProvider>
+      <RoleProvider>
+        <StatusBar style="dark" />
+        <Stack>
+          <Stack.Screen name="index" options={{ headerShown: false }} />
+          <Stack.Screen name="guide" options={{ headerShown: false }} />
+          <Stack.Screen name="login" options={{ headerShown: false }} />
+          <Stack.Screen name="(tabs)" options={{ headerShown: false }} />
+          <Stack.Screen name="(enterprise)" options={{ headerShown: false }} />
         <Stack.Screen name="jobs/[id]" options={{ headerShown: false }} />
         <Stack.Screen name="settings" options={{ title: '设置' }} />
         <Stack.Screen name="resume" options={{ title: '我的简历' }} />
@@ -19,6 +24,7 @@ export default function RootLayout() {
         <Stack.Screen name="history" options={{ title: '浏览历史' }} />
         <Stack.Screen name="assessment" options={{ title: '我的测评' }} />
       </Stack>
-    </RoleProvider>
+      </RoleProvider>
+    </AuthProvider>
   );
 }

app/guide.tsx

@@ -0,0 +1,194 @@
+import { Ionicons } from '@expo/vector-icons';
+import { LinearGradient } from 'expo-linear-gradient';
+import { useRouter } from 'expo-router';
+import { useRef, useState } from 'react';
+import {
+  Pressable,
+  ScrollView,
+  StyleSheet,
+  Text,
+  useWindowDimensions,
+  View,
+} from 'react-native';
+import { SafeAreaView } from 'react-native-safe-area-context';
+import { colors, headerGradientShort } from '../src/theme';
+import { useAuth } from '../src/context/AuthContext';
+
+interface GuideSlide {
+  icon: string;
+  title: string;
+  desc: string;
+}
+
+/** 引导页内容：聚焦职来四大差异化能力 */
+const SLIDES: GuideSlide[] = [
+  {
+    icon: 'compass-outline',
+    title: '双向透明求职生态',
+    desc: '看真实公司评价与行业声誉，让信息差不再成为求职的障碍。',
+  },
+  {
+    icon: 'options-outline',
+    title: '自定义评价维度',
+    desc: '按你的关注点设置权重，实时算出综合得分，找到最匹配的公司。',
+  },
+  {
+    icon: 'game-controller-outline',
+    title: '通关小游戏',
+    desc: '7 关闯关引导你走完「认识自己 → 签约」的完整求职链路。',
+  },
+  {
+    icon: 'shield-checkmark-outline',
+    title: '阿布阿诺 AI 法律服务',
+    desc: '免费咨询与模板，付费律师与合同审核，求职权益有保障。',
+  },
+];
+
+export default function GuideScreen() {
+  const router = useRouter();
+  const { completeOnboarding } = useAuth();
+  const { width } = useWindowDimensions();
+  const [page, setPage] = useState(0);
+  const scrollRef = useRef<ScrollView>(null);
+
+  const isLast = page === SLIDES.length - 1;
+
+  const finish = () => {
+    completeOnboarding();
+    router.replace('/login');
+  };
+
+  const goNext = () => {
+    if (isLast) {
+      finish();
+      return;
+    }
+    const next = page + 1;
+    setPage(next);
+    scrollRef.current?.scrollTo({ x: next * width, animated: true });
+  };
+
+  return (
+    <SafeAreaView style={styles.container} edges={['top', 'bottom']}>
+      <View style={styles.topBar}>
+        <View style={styles.topSpacer} />
+        <Pressable onPress={finish} hitSlop={8}>
+          <Text style={styles.skipText}>跳过</Text>
+        </Pressable>
+      </View>
+
+      <ScrollView
+        ref={scrollRef}
+        horizontal
+        pagingEnabled
+        showsHorizontalScrollIndicator={false}
+        onMomentumScrollEnd={(e) => {
+          const index = Math.round(e.nativeEvent.contentOffset.x / width);
+          setPage(index);
+        }}
+        style={styles.pager}
+      >
+        {SLIDES.map((slide) => (
+          <View key={slide.title} style={[styles.slide, { width }]}>
+            <LinearGradient colors={[...headerGradientShort]} style={styles.illus}>
+              <Ionicons
+                name={slide.icon as keyof typeof Ionicons.glyphMap}
+                size={56}
+                color={colors.textInverse}
+              />
+            </LinearGradient>
+            <Text style={styles.slideTitle}>{slide.title}</Text>
+            <Text style={styles.slideDesc}>{slide.desc}</Text>
+          </View>
+        ))}
+      </ScrollView>
+
+      <View style={styles.bottom}>
+        <View style={styles.dots}>
+          {SLIDES.map((slide, i) => (
+            <View key={slide.title} style={[styles.dot, i === page && styles.dotActive]} />
+          ))}
+        </View>
+        <Pressable style={styles.nextBtn} onPress={goNext} hitSlop={6}>
+          <LinearGradient colors={[...headerGradientShort]} style={styles.nextGradient}>
+            <Text style={styles.nextText}>{isLast ? '立即体验' : '下一步'}</Text>
+          </LinearGradient>
+        </Pressable>
+        <Text style={styles.pageHint}>
+          {page + 1} / {SLIDES.length}
+        </Text>
+      </View>
+    </SafeAreaView>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: { flex: 1, backgroundColor: colors.white },
+  topBar: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    justifyContent: 'space-between',
+    paddingHorizontal: 16,
+    paddingVertical: 10,
+  },
+  topSpacer: { width: 40 },
+  skipText: { fontSize: 14, color: colors.textSecondary, paddingHorizontal: 4 },
+  pager: { flex: 1 },
+  slide: {
+    flex: 1,
+    alignItems: 'center',
+    justifyContent: 'center',
+    paddingHorizontal: 36,
+  },
+  illus: {
+    width: 132,
+    height: 132,
+    borderRadius: 36,
+    alignItems: 'center',
+    justifyContent: 'center',
+    marginBottom: 36,
+  },
+  slideTitle: {
+    fontSize: 22,
+    fontWeight: '800',
+    color: colors.textPrimary,
+    textAlign: 'center',
+    marginBottom: 14,
+  },
+  slideDesc: {
+    fontSize: 15,
+    color: colors.textSecondary,
+    textAlign: 'center',
+    lineHeight: 24,
+  },
+  bottom: {
+    alignItems: 'center',
+    paddingHorizontal: 36,
+    paddingBottom: 28,
+  },
+  dots: { flexDirection: 'row', gap: 8, marginBottom: 24 },
+  dot: {
+    width: 8,
+    height: 8,
+    borderRadius: 4,
+    backgroundColor: colors.border,
+  },
+  dotActive: { width: 22, backgroundColor: colors.primary },
+  nextBtn: {
+    width: '100%',
+    height: 50,
+    borderRadius: 25,
+    overflow: 'hidden',
+  },
+  nextGradient: {
+    flex: 1,
+    alignItems: 'center',
+    justifyContent: 'center',
+  },
+  nextText: { fontSize: 16, fontWeight: '700', color: colors.textInverse },
+  pageHint: {
+    marginTop: 16,
+    fontSize: 13,
+    color: colors.textHint,
+  },
+});

app/index.tsx

@@ -0,0 +1,23 @@
+import { Redirect } from 'expo-router';
+import { useAuth } from '../src/context/AuthContext';
+import { useRole } from '../src/context/RoleContext';
+
+/**
+ * 应用总入口（根路由 /）。
+ * 按「引导 → 登录 → 选择身份 → 对应端」漏斗放行，保证每个页面都有合理的前置入口。
+ */
+export default function Index() {
+  const { onboardingSeen, isLoggedIn } = useAuth();
+  const { role } = useRole();
+
+  if (!onboardingSeen) {
+    return <Redirect href="/guide" />;
+  }
+  if (!isLoggedIn) {
+    return <Redirect href="/login" />;
+  }
+  if (!role) {
+    return <Redirect href="/identity-select" />;
+  }
+  return <Redirect href={role === 'candidate' ? '/(tabs)' : '/(enterprise)'} />;
+}

app/login.tsx

@@ -0,0 +1,264 @@
+import { Ionicons } from '@expo/vector-icons';
+import { LinearGradient } from 'expo-linear-gradient';
+import { useRouter } from 'expo-router';
+import { useEffect, useRef, useState } from 'react';
+import {
+  Pressable,
+  ScrollView,
+  StyleSheet,
+  Text,
+  TextInput,
+  View,
+} from 'react-native';
+import { SafeAreaView } from 'react-native-safe-area-context';
+import { colors, headerGradientShort } from '../src/theme';
+import { useAuth } from '../src/context/AuthContext';
+import { useLogin } from '../src/hooks';
+
+const PHONE_RE = /^1\d{10}$/;
+
+export default function LoginScreen() {
+  const router = useRouter();
+  const { login: authLogin } = useAuth();
+  const { login, loading, error } = useLogin();
+
+  const [phone, setPhone] = useState('');
+  const [code, setCode] = useState('');
+  const [agreed, setAgreed] = useState(false);
+  const [countdown, setCountdown] = useState(0);
+  const timerRef = useRef<ReturnType<typeof setInterval> | null>(null);
+
+  useEffect(() => {
+    return () => {
+      if (timerRef.current) clearInterval(timerRef.current);
+    };
+  }, []);
+
+  const phoneValid = PHONE_RE.test(phone);
+  const canSubmit = phoneValid && code.length >= 4 && agreed && !loading;
+
+  const startCountdown = () => {
+    if (!phoneValid || countdown > 0) return;
+    setCountdown(60);
+    timerRef.current = setInterval(() => {
+      setCountdown((c) => {
+        if (c <= 1) {
+          if (timerRef.current) clearInterval(timerRef.current);
+          return 0;
+        }
+        return c - 1;
+      });
+    }, 1000);
+  };
+
+  const handleLogin = async () => {
+    if (!canSubmit) return;
+    try {
+      const res = await login(phone, code);
+      authLogin(res.token);
+      router.replace('/identity-select');
+    } catch {
+      // 错误已由 error 向上展示
+    }
+  };
+
+  const handleGuest = () => {
+    router.replace('/identity-select');
+  };
+
+  return (
+    <SafeAreaView style={styles.container} edges={['top']}>
+      <LinearGradient colors={[...headerGradientShort]} style={styles.header}>
+        <View style={styles.logoCircle}>
+          <Text style={styles.logoText}>职</Text>
+        </View>
+        <Text style={styles.headerTitle}>登录职来</Text>
+        <Text style={styles.headerSub}>智能求职 · 企业招聘一站式服务平台</Text>
+      </LinearGradient>
+
+      <ScrollView contentContainerStyle={styles.body} showsVerticalScrollIndicator={false}>
+        <View style={styles.field}>
+          <Text style={styles.label}>手机号</Text>
+          <TextInput
+            style={styles.input}
+            value={phone}
+            onChangeText={setPhone}
+            placeholder="请输入手机号"
+            placeholderTextColor={colors.textHint}
+            keyboardType="phone-pad"
+            maxLength={11}
+          />
+        </View>
+
+        <View style={styles.field}>
+          <Text style={styles.label}>验证码</Text>
+          <View style={styles.codeRow}>
+            <TextInput
+              style={[styles.input, styles.codeInput]}
+              value={code}
+              onChangeText={setCode}
+              placeholder="请输入验证码"
+              placeholderTextColor={colors.textHint}
+              keyboardType="number-pad"
+              maxLength={6}
+            />
+            <Pressable
+              style={[styles.codeBtn, (countdown > 0 || !phoneValid) && styles.codeBtnDisabled]}
+              onPress={startCountdown}
+              disabled={countdown > 0 || !phoneValid}
+            >
+              <Text style={styles.codeBtnText}>
+                {countdown > 0 ? `${countdown}s 后重发` : '获取验证码'}
+              </Text>
+            </Pressable>
+          </View>
+        </View>
+
+        {error && <Text style={styles.errorText}>{error.message}</Text>}
+
+        <Pressable
+          style={[styles.submitBtn, !canSubmit && styles.submitDisabled]}
+          onPress={handleLogin}
+          disabled={!canSubmit}
+        >
+          <Text style={styles.submitText}>{loading ? '登录中…' : '登录 / 注册'}</Text>
+        </Pressable>
+
+        <View style={styles.agreement}>
+          <Pressable
+            style={[styles.checkbox, agreed && styles.checkboxChecked]}
+            onPress={() => setAgreed((v) => !v)}
+            hitSlop={6}
+          >
+            {agreed && <Ionicons name="checkmark" size={14} color={colors.textInverse} />}
+          </Pressable>
+          <Text style={styles.agreementText}>
+            已阅读并同意
+            <Text style={styles.link} onPress={() => router.push('/settings/privacy-policy')}>
+              《隐私政策》
+            </Text>
+            和
+            <Text style={styles.link} onPress={() => router.push('/settings/user-agreement')}>
+              《用户协议》
+            </Text>
+          </Text>
+        </View>
+
+        <View style={styles.others}>
+          <Text style={styles.othersTitle}>其他登录方式</Text>
+          <View style={styles.othersRow}>
+            <Pressable style={styles.otherItem} onPress={() => {}} hitSlop={8}>
+              <Ionicons name="logo-wechat" size={26} color={colors.success} />
+            </Pressable>
+            <Pressable style={styles.otherItem} onPress={() => {}} hitSlop={8}>
+              <Ionicons name="logo-apple" size={26} color={colors.textPrimary} />
+            </Pressable>
+          </View>
+        </View>
+      </ScrollView>
+
+      <Pressable style={styles.guest} onPress={handleGuest} hitSlop={6}>
+        <Text style={styles.guestText}>暂不登录，先逛逛</Text>
+      </Pressable>
+    </SafeAreaView>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: { flex: 1, backgroundColor: colors.pageBg },
+  header: {
+    alignItems: 'center',
+    paddingTop: 44,
+    paddingBottom: 36,
+  },
+  logoCircle: {
+    width: 64,
+    height: 64,
+    borderRadius: 20,
+    backgroundColor: colors.white,
+    alignItems: 'center',
+    justifyContent: 'center',
+    marginBottom: 14,
+  },
+  logoText: { fontSize: 30, fontWeight: '800', color: colors.primary },
+  headerTitle: { fontSize: 22, fontWeight: '800', color: colors.textInverse },
+  headerSub: { fontSize: 13, color: colors.textInverse, opacity: 0.9, marginTop: 6 },
+  body: { flexGrow: 1, padding: 20, paddingTop: 24 },
+  field: { marginBottom: 18 },
+  label: { fontSize: 14, fontWeight: '600', color: colors.textPrimary, marginBottom: 8 },
+  input: {
+    height: 50,
+    borderRadius: 12,
+    borderWidth: 1,
+    borderColor: colors.border,
+    backgroundColor: colors.white,
+    paddingHorizontal: 14,
+    fontSize: 16,
+    color: colors.textPrimary,
+  },
+  codeRow: { flexDirection: 'row', alignItems: 'center', gap: 12 },
+  codeInput: { flex: 1 },
+  codeBtn: {
+    height: 50,
+    paddingHorizontal: 16,
+    borderRadius: 12,
+    backgroundColor: colors.primaryLight,
+    alignItems: 'center',
+    justifyContent: 'center',
+  },
+  codeBtnDisabled: { backgroundColor: colors.borderLight, opacity: 0.7 },
+  codeBtnText: { fontSize: 14, fontWeight: '600', color: colors.primaryText },
+  errorText: {
+    fontSize: 13,
+    color: colors.danger,
+    marginBottom: 12,
+  },
+  submitBtn: {
+    height: 50,
+    borderRadius: 25,
+    backgroundColor: colors.primaryBtn,
+    alignItems: 'center',
+    justifyContent: 'center',
+    marginTop: 8,
+  },
+  submitDisabled: { backgroundColor: colors.border, opacity: 0.7 },
+  submitText: { fontSize: 16, fontWeight: '700', color: colors.textInverse },
+  agreement: {
+    flexDirection: 'row',
+    alignItems: 'flex-start',
+    marginTop: 16,
+  },
+  checkbox: {
+    width: 18,
+    height: 18,
+    borderRadius: 5,
+    borderWidth: 1.5,
+    borderColor: colors.borderStrong,
+    alignItems: 'center',
+    justifyContent: 'center',
+    marginTop: 2,
+    marginRight: 8,
+  },
+  checkboxChecked: { backgroundColor: colors.primary, borderColor: colors.primary },
+  agreementText: { flex: 1, fontSize: 12, color: colors.textSecondary, lineHeight: 18 },
+  link: { color: colors.primaryText, fontWeight: '600' },
+  others: { alignItems: 'center', marginTop: 32 },
+  othersTitle: { fontSize: 12, color: colors.textHint, marginBottom: 16 },
+  othersRow: { flexDirection: 'row', gap: 36 },
+  otherItem: {
+    width: 52,
+    height: 52,
+    borderRadius: 26,
+    backgroundColor: colors.white,
+    borderWidth: 1,
+    borderColor: colors.borderLight,
+    alignItems: 'center',
+    justifyContent: 'center',
+  },
+  guest: {
+    alignItems: 'center',
+    paddingVertical: 18,
+    backgroundColor: colors.pageBg,
+  },
+  guestText: { fontSize: 14, color: colors.textHint },
+});