feat: add PasswordInput component with show/hide toggle

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

app/components/register/PasswordInput.vue

@@ -0,0 +1,42 @@
+<script setup lang="ts">
+const props = withDefaults(defineProps<{
+  modelValue: string
+  label?: string
+  placeholder?: string
+  disabled?: boolean
+}>(), {
+  label: '密码',
+  placeholder: '请输入密码',
+  disabled: false,
+})
+
+const emit = defineEmits<{
+  'update:modelValue': [value: string]
+}>()
+
+const showPassword = ref(false)
+</script>
+
+<template>
+  <UFormField :label="label" required>
+    <div class="relative">
+      <UInput
+        :type="showPassword ? 'text' : 'password'"
+        :model-value="modelValue"
+        :placeholder="placeholder"
+        :disabled="disabled"
+        class="w-full"
+        @update:model-value="emit('update:modelValue', $event)"
+      />
+      <UButton
+        variant="link"
+        color="neutral"
+        size="sm"
+        :icon="showPassword ? 'i-lucide-eye-off' : 'i-lucide-eye'"
+        :aria-label="showPassword ? '隐藏密码' : '显示密码'"
+        class="absolute right-1 top-1/2 -translate-y-1/2"
+        @click="showPassword = !showPassword"
+      />
+    </div>
+  </UFormField>
+</template>

app/components/register/__tests__/PasswordInput.test.ts

@@ -0,0 +1,104 @@
+import { describe, it, expect } from 'vitest'
+import { mount } from '@vue/test-utils'
+import PasswordInput from '../PasswordInput.vue'
+
+describe('PasswordInput', () => {
+  it('renders with type=password by default', () => {
+    const wrapper = mount(PasswordInput, {
+      props: { modelValue: '' },
+      global: {
+        stubs: {
+          UInput: {
+            template: '<input :type="$attrs.type" :disabled="$attrs.disabled" :value="modelValue" @input="$emit(\'update:modelValue\', $event.target.value)" />',
+            props: ['type', 'disabled', 'modelValue', 'placeholder'],
+          },
+          UButton: {
+            template: '<button :disabled="$attrs.disabled" @click="$emit(\'click\')"><slot /></button>',
+            props: ['disabled'],
+            emits: ['click'],
+          },
+          UFormField: {
+            template: '<div><slot /></div>',
+            props: ['label'],
+          },
+        },
+      },
+    })
+    const input = wrapper.find('input')
+    expect(input.attributes('type')).toBe('password')
+  })
+
+  it('toggles to type=text when button clicked', async () => {
+    const wrapper = mount(PasswordInput, {
+      props: { modelValue: '' },
+      global: {
+        stubs: {
+          UInput: {
+            template: '<input :type="$attrs.type" :disabled="$attrs.disabled" :value="modelValue" @input="$emit(\'update:modelValue\', $event.target.value)" />',
+            props: ['type', 'disabled', 'modelValue', 'placeholder'],
+          },
+          UButton: {
+            template: '<button :disabled="$attrs.disabled" @click="$emit(\'click\')"><slot /></button>',
+            props: ['disabled'],
+            emits: ['click'],
+          },
+          UFormField: {
+            template: '<div><slot /></div>',
+            props: ['label'],
+          },
+        },
+      },
+    })
+    const btn = wrapper.find('button')
+    await btn.trigger('click')
+    expect(wrapper.find('input').attributes('type')).toBe('text')
+  })
+
+  it('renders label when provided', () => {
+    const wrapper = mount(PasswordInput, {
+      props: { modelValue: '', label: 'Test Label' },
+      global: {
+        stubs: {
+          UInput: {
+            template: '<input :type="$attrs.type" :disabled="$attrs.disabled" :value="modelValue" @input="$emit(\'update:modelValue\', $event.target.value)" />',
+            props: ['type', 'disabled', 'modelValue', 'placeholder'],
+          },
+          UButton: {
+            template: '<button :disabled="$attrs.disabled" @click="$emit(\'click\')"><slot /></button>',
+            props: ['disabled'],
+            emits: ['click'],
+          },
+          UFormField: {
+            template: '<div><slot /></div>',
+            props: ['label'],
+          },
+        },
+      },
+    })
+    expect(wrapper.text()).toContain('Test Label')
+  })
+
+  it('disables input when disabled prop is true', () => {
+    const wrapper = mount(PasswordInput, {
+      props: { modelValue: '', disabled: true },
+      global: {
+        stubs: {
+          UInput: {
+            template: '<input :type="$attrs.type" :disabled="$attrs.disabled" :value="modelValue" @input="$emit(\'update:modelValue\', $event.target.value)" />',
+            props: ['type', 'disabled', 'modelValue', 'placeholder'],
+          },
+          UButton: {
+            template: '<button :disabled="$attrs.disabled" @click="$emit(\'click\')"><slot /></button>',
+            props: ['disabled'],
+            emits: ['click'],
+          },
+          UFormField: {
+            template: '<div><slot /></div>',
+            props: ['label'],
+          },
+        },
+      },
+    })
+    expect(wrapper.find('input').element.disabled).toBe(true)
+  })
+})