stage 2: FIRE calculator, holdings tracker, settings store update

- calculator.vue: compound-growth formula to compute months/date to FIRE,
  Barista FIRE logic breakdown card, collapsible editable params (bound to settings store)
- holdings.vue: manual portfolio entry with add/edit/delete, P&L display
- holdings.ts: new pinia store with persist; totalValue/Cost/PnL computed
- settings.ts: add annualReturn (6% default)
- progress.vue: enhanced empty-state onboarding prompt

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/src/pages/calculator/calculator.vue

@@ -1,14 +1,223 @@
 <script lang="ts" setup>
+import { useProgressStore } from '@/store/progress'
+import { useSettingsStore } from '@/store/settings'
+
 defineOptions({ name: 'Calculator' })
 definePage({
   style: { navigationBarTitleText: 'FIRE 测算' },
 })
+
+const progress = useProgressStore()
+const settings = useSettingsStore()
+
+const currentAssets = computed(() =>
+  progress.netAssets > 0 ? progress.netAssets : settings.initialCapital,
+)
+
+const netAnnualExpense = computed(() => settings.annualExpense - settings.partTimeIncome)
+
+const computedTarget = computed(() =>
+  Math.round(netAnnualExpense.value / settings.withdrawRate),
+)
+
+const monthlyRate = computed(() => (1 + settings.annualReturn) ** (1 / 12) - 1)
+
+// n = log((FV·r + PMT) / (PV·r + PMT)) / log(1+r)
+const monthsToFire = computed(() => {
+  const pv = currentAssets.value
+  const fv = settings.target
+  const pmt = settings.monthlyInvest
+  const r = monthlyRate.value
+  if (pv >= fv) return 0
+  if (r <= 0) return pmt > 0 ? Math.ceil((fv - pv) / pmt) : Infinity
+  const ratio = (fv * r + pmt) / (pv * r + pmt)
+  if (ratio <= 0) return Infinity
+  return Math.log(ratio) / Math.log(1 + r)
+})
+
+const yearsLeft = computed(() => Math.floor(monthsToFire.value / 12))
+const monthsLeft = computed(() => Math.floor(monthsToFire.value % 12))
+
+const fireDate = computed(() => {
+  if (!isFinite(monthsToFire.value)) return '无法达成'
+  const d = new Date()
+  d.setMonth(d.getMonth() + Math.ceil(monthsToFire.value))
+  return `${d.getFullYear()} 年 ${d.getMonth() + 1} 月`
+})
+
+const showParams = ref(false)
+
+const paramItems = computed(() => [
+  {
+    key: 'annualReturn',
+    label: '年化收益率',
+    unit: '%',
+    getValue: () => (settings.annualReturn * 100).toFixed(1),
+    setValue: (v: string) => { settings.annualReturn = Math.max(0, Number(v)) / 100 },
+  },
+  {
+    key: 'monthlyInvest',
+    label: '每月定投',
+    unit: '元',
+    getValue: () => String(settings.monthlyInvest),
+    setValue: (v: string) => { settings.monthlyInvest = Math.max(0, Number(v)) },
+  },
+  {
+    key: 'annualExpense',
+    label: '年支出',
+    unit: '元',
+    getValue: () => String(settings.annualExpense),
+    setValue: (v: string) => { settings.annualExpense = Math.max(0, Number(v)) },
+  },
+  {
+    key: 'partTimeIncome',
+    label: '兼职年收入',
+    unit: '元',
+    getValue: () => String(settings.partTimeIncome),
+    setValue: (v: string) => { settings.partTimeIncome = Math.max(0, Number(v)) },
+  },
+  {
+    key: 'withdrawRate',
+    label: '安全提取率',
+    unit: '%',
+    getValue: () => (settings.withdrawRate * 100).toFixed(1),
+    setValue: (v: string) => { settings.withdrawRate = Math.max(0.1, Number(v)) / 100 },
+  },
+  {
+    key: 'target',
+    label: '目标本金',
+    unit: '元',
+    getValue: () => String(settings.target),
+    setValue: (v: string) => { settings.target = Math.max(0, Number(v)) },
+  },
+])
 </script>
 
 <template>
-  <view class="min-h-screen bg-gray-50 px-4 pt-12 pb-24 flex flex-col items-center justify-center">
-    <view class="text-6xl mb-4">🚧</view>
-    <view class="text-lg font-medium text-gray-600">测算器</view>
-    <view class="mt-2 text-sm text-gray-400">阶段 2 开发中</view>
+  <view class="min-h-screen bg-gray-50 px-4 pt-12 pb-24">
+    <view class="mb-6 text-2xl font-bold text-gray-800">
+      FIRE 测算
+    </view>
+
+    <!-- 核心结论 -->
+    <view class="mb-4 rounded-2xl bg-green-500 p-5 shadow-sm text-white">
+      <view class="text-sm opacity-80 mb-1">
+        按当前定投速度，预计再过
+      </view>
+      <view class="text-3xl font-bold mb-1">
+        <template v-if="monthsToFire === 0">
+          已达成！🎉
+        </template>
+        <template v-else-if="isFinite(monthsToFire)">
+          {{ yearsLeft }} 年 {{ monthsLeft }} 个月
+        </template>
+        <template v-else>
+          请调整参数
+        </template>
+      </view>
+      <view class="text-sm opacity-80">
+        达到 Barista FIRE
+      </view>
+      <view v-if="isFinite(monthsToFire) && monthsToFire > 0" class="mt-3 text-base font-medium">
+        预计时间：{{ fireDate }}
+      </view>
+    </view>
+
+    <!-- 关键数字 -->
+    <view class="mb-4 grid grid-cols-2 gap-3">
+      <view class="rounded-2xl bg-white p-4 shadow-sm">
+        <view class="text-sm text-gray-500">
+          FIRE 目标本金
+        </view>
+        <view class="mt-1 text-xl font-bold text-gray-800">
+          ¥{{ (settings.target / 10000).toFixed(0) }} 万
+        </view>
+        <view class="mt-1 text-xs text-gray-400">
+          按参数计算 {{ (computedTarget / 10000).toFixed(1) }} 万
+        </view>
+      </view>
+      <view class="rounded-2xl bg-white p-4 shadow-sm">
+        <view class="text-sm text-gray-500">
+          当前净资产
+        </view>
+        <view class="mt-1 text-xl font-bold text-gray-800">
+          ¥{{ (currentAssets / 10000).toFixed(2) }} 万
+        </view>
+        <view class="mt-1 text-xs text-gray-400">
+          {{ progress.netAssets > 0 ? '进度页最新记录' : '使用初始资本' }}
+        </view>
+      </view>
+      <view class="rounded-2xl bg-white p-4 shadow-sm">
+        <view class="text-sm text-gray-500">
+          每月定投
+        </view>
+        <view class="mt-1 text-xl font-bold text-blue-500">
+          ¥{{ settings.monthlyInvest.toLocaleString() }}
+        </view>
+      </view>
+      <view class="rounded-2xl bg-white p-4 shadow-sm">
+        <view class="text-sm text-gray-500">
+          年化收益假设
+        </view>
+        <view class="mt-1 text-xl font-bold text-purple-500">
+          {{ (settings.annualReturn * 100).toFixed(1) }}%
+        </view>
+      </view>
+    </view>
+
+    <!-- Barista FIRE 逻辑拆解 -->
+    <view class="mb-4 rounded-2xl bg-white p-5 shadow-sm">
+      <view class="font-medium text-gray-700 mb-3">
+        Barista FIRE 逻辑
+      </view>
+      <view class="text-sm text-gray-600 space-y-2">
+        <view class="flex justify-between">
+          <text>年支出</text>
+          <text class="font-medium text-gray-800">¥{{ settings.annualExpense.toLocaleString() }}</text>
+        </view>
+        <view class="flex justify-between">
+          <text>兼职年收入</text>
+          <text class="font-medium text-green-600">− ¥{{ settings.partTimeIncome.toLocaleString() }}</text>
+        </view>
+        <view class="h-px bg-gray-100 my-1" />
+        <view class="flex justify-between">
+          <text>投资需覆盖</text>
+          <text class="font-medium text-gray-800">¥{{ netAnnualExpense.toLocaleString() }}/年</text>
+        </view>
+        <view class="flex justify-between">
+          <text>÷ 提取率 {{ (settings.withdrawRate * 100).toFixed(1) }}%</text>
+          <text class="font-medium text-green-600 text-right">= ¥{{ (computedTarget / 10000).toFixed(1) }} 万</text>
+        </view>
+      </view>
+    </view>
+
+    <!-- 调整参数（可展开） -->
+    <view class="mb-4 rounded-2xl bg-white shadow-sm overflow-hidden">
+      <view
+        class="px-5 py-3 border-b border-gray-100 font-medium text-gray-700 flex justify-between items-center"
+        @tap="showParams = !showParams"
+      >
+        <text>调整参数</text>
+        <text class="text-gray-400 text-sm">{{ showParams ? '收起 ▲' : '展开 ▼' }}</text>
+      </view>
+      <view v-if="showParams" class="divide-y divide-gray-50">
+        <view
+          v-for="item in paramItems"
+          :key="item.key"
+          class="flex items-center justify-between px-5 py-3"
+        >
+          <text class="text-sm text-gray-700">{{ item.label }}（{{ item.unit }}）</text>
+          <input
+            :value="item.getValue()"
+            type="digit"
+            class="w-28 text-right border border-gray-200 rounded-lg px-3 py-1.5 text-sm text-gray-800"
+            @blur="(e: any) => item.setValue(e.detail.value)"
+          />
+        </view>
+        <view class="px-5 py-3 text-xs text-gray-400">
+          修改后自动保存，数据实时更新
+        </view>
+      </view>
+    </view>
   </view>
 </template>

app/src/pages/holdings/holdings.vue

@@ -1,14 +1,221 @@
 <script lang="ts" setup>
+import { useHoldingsStore } from '@/store/holdings'
+
 defineOptions({ name: 'Holdings' })
 definePage({
   style: { navigationBarTitleText: '持仓' },
 })
+
+const store = useHoldingsStore()
+
+const showForm = ref(false)
+const editingId = ref<string | null>(null)
+const form = reactive({ name: '', currentValue: '', costBasis: '' })
+
+function openAdd() {
+  editingId.value = null
+  form.name = ''
+  form.currentValue = ''
+  form.costBasis = ''
+  showForm.value = true
+}
+
+function openEdit(id: string) {
+  const h = store.holdings.find(h => h.id === id)
+  if (!h) return
+  editingId.value = id
+  form.name = h.name
+  form.currentValue = String(h.currentValue)
+  form.costBasis = String(h.costBasis)
+  showForm.value = true
+}
+
+function saveForm() {
+  const cv = Number(form.currentValue)
+  const cb = Number(form.costBasis)
+  if (!form.name.trim() || cv <= 0 || cb <= 0) return
+  if (editingId.value) {
+    store.update(editingId.value, cv, cb)
+  }
+  else {
+    store.add(form.name.trim(), cv, cb)
+  }
+  showForm.value = false
+}
+
+function confirmDelete(id: string) {
+  uni.showModal({
+    title: '删除持仓',
+    content: '确认删除这条记录？',
+    success: (res) => {
+      if (res.confirm) store.remove(id)
+    },
+  })
+}
+
+function pnlColor(pnl: number) {
+  return pnl >= 0 ? 'text-red-500' : 'text-green-600'
+}
+
+function pnlSign(pnl: number) {
+  return pnl >= 0 ? '+' : ''
+}
 </script>
 
 <template>
-  <view class="min-h-screen bg-gray-50 px-4 pt-12 pb-24 flex flex-col items-center justify-center">
-    <view class="text-6xl mb-4">🚧</view>
-    <view class="text-lg font-medium text-gray-600">持仓跟踪</view>
-    <view class="mt-2 text-sm text-gray-400">阶段 2 开发中</view>
+  <view class="min-h-screen bg-gray-50 px-4 pt-12 pb-24">
+    <view class="mb-6 text-2xl font-bold text-gray-800">
+      持仓
+    </view>
+
+    <!-- 总览卡片 -->
+    <view class="mb-4 rounded-2xl bg-white p-5 shadow-sm">
+      <view class="mb-3 text-sm text-gray-500">
+        投资组合总览
+      </view>
+      <view class="flex justify-between items-end mb-4">
+        <view>
+          <view class="text-xs text-gray-400 mb-1">
+            总市值
+          </view>
+          <view class="text-2xl font-bold text-gray-800">
+            ¥{{ store.totalValue.toLocaleString() }}
+          </view>
+        </view>
+        <view class="text-right">
+          <view class="text-xs text-gray-400 mb-1">
+            总浮盈
+          </view>
+          <view class="text-xl font-bold" :class="pnlColor(store.totalPnl)">
+            {{ pnlSign(store.totalPnl) }}¥{{ Math.abs(store.totalPnl).toLocaleString() }}
+          </view>
+        </view>
+      </view>
+      <view class="flex justify-between text-sm text-gray-500">
+        <view>
+          总成本 ¥{{ store.totalCost.toLocaleString() }}
+        </view>
+        <view :class="pnlColor(store.totalPnl)">
+          {{ pnlSign(store.totalPnlPct) }}{{ store.totalPnlPct.toFixed(2) }}%
+        </view>
+      </view>
+    </view>
+
+    <!-- 持仓列表 -->
+    <view class="mb-4 rounded-2xl bg-white shadow-sm overflow-hidden">
+      <view class="px-5 py-3 border-b border-gray-100 font-medium text-gray-700">
+        持仓明细
+      </view>
+
+      <view v-if="store.holdings.length === 0" class="px-5 py-10 flex flex-col items-center gap-3">
+        <view class="text-4xl">
+          📈
+        </view>
+        <view class="text-base font-medium text-gray-700">
+          暂无持仓记录
+        </view>
+        <view class="text-sm text-gray-400 text-center">
+          点击右下角 <text class="font-bold text-green-500">+</text> 按钮添加持仓
+        </view>
+      </view>
+
+      <view
+        v-for="h in store.holdings"
+        :key="h.id"
+        class="px-5 py-4 border-b border-gray-50 last:border-none"
+      >
+        <view class="flex justify-between items-start mb-1">
+          <text class="font-medium text-gray-800 text-base">{{ h.name }}</text>
+          <view class="text-right">
+            <view class="font-bold text-gray-800">
+              ¥{{ h.currentValue.toLocaleString() }}
+            </view>
+            <view class="text-sm" :class="pnlColor(h.currentValue - h.costBasis)">
+              {{ pnlSign(h.currentValue - h.costBasis) }}{{ ((h.currentValue - h.costBasis) / h.costBasis * 100).toFixed(2) }}%
+            </view>
+          </view>
+        </view>
+        <view class="flex justify-between items-center mt-1">
+          <text class="text-xs text-gray-400">成本 ¥{{ h.costBasis.toLocaleString() }}</text>
+          <view class="flex gap-3">
+            <text class="text-xs text-blue-400" @tap="openEdit(h.id)">编辑</text>
+            <text class="text-xs text-red-400" @tap="confirmDelete(h.id)">删除</text>
+          </view>
+        </view>
+      </view>
+    </view>
+
+    <!-- FAB -->
+    <view
+      class="fixed bottom-20 right-5 h-14 w-14 rounded-full bg-green-500 shadow-lg flex items-center justify-center"
+      @tap="openAdd"
+    >
+      <text class="text-white text-2xl leading-none">+</text>
+    </view>
+
+    <!-- 录入/编辑弹窗 -->
+    <view
+      v-if="showForm"
+      class="fixed inset-0 bg-black/40 flex items-center px-6"
+      @tap.self="showForm = false"
+    >
+      <view class="w-full rounded-2xl bg-white p-6">
+        <view class="mb-4 text-lg font-medium text-gray-800">
+          {{ editingId ? '编辑持仓' : '添加持仓' }}
+        </view>
+        <view class="space-y-3">
+          <view>
+            <view class="text-sm text-gray-500 mb-1">
+              名称（如：沪深300ETF）
+            </view>
+            <input
+              v-model="form.name"
+              type="text"
+              placeholder="请输入持仓名称"
+              class="w-full rounded-xl border border-gray-200 px-4 py-3 text-base"
+              :adjust-position="false"
+            />
+          </view>
+          <view>
+            <view class="text-sm text-gray-500 mb-1">
+              当前市值（元）
+            </view>
+            <input
+              v-model="form.currentValue"
+              type="digit"
+              placeholder="当前总市值"
+              class="w-full rounded-xl border border-gray-200 px-4 py-3 text-base"
+              :adjust-position="false"
+            />
+          </view>
+          <view>
+            <view class="text-sm text-gray-500 mb-1">
+              成本（元）
+            </view>
+            <input
+              v-model="form.costBasis"
+              type="digit"
+              placeholder="买入总成本"
+              class="w-full rounded-xl border border-gray-200 px-4 py-3 text-base"
+              :adjust-position="false"
+            />
+          </view>
+        </view>
+        <view class="mt-5 flex gap-3">
+          <view
+            class="flex-1 rounded-xl border border-gray-200 py-3 text-center text-gray-500"
+            @tap="showForm = false"
+          >
+            取消
+          </view>
+          <view
+            class="flex-1 rounded-xl bg-green-500 py-3 text-center text-white font-medium"
+            @tap="saveForm"
+          >
+            保存
+          </view>
+        </view>
+      </view>
+    </view>
   </view>
 </template>

app/src/pages/progress/progress.vue

@@ -83,8 +83,19 @@ function saveSnapshot() {
       <view class="px-5 py-3 border-b border-gray-100 font-medium text-gray-700">
         历史记录
       </view>
-      <view v-if="store.snapshots.length === 0" class="px-5 py-8 text-center text-gray-400">
-        暂无记录，点击下方按钮录入
+      <view v-if="store.snapshots.length === 0" class="px-5 py-10 flex flex-col items-center gap-3">
+        <view class="text-4xl">
+          📊
+        </view>
+        <view class="text-base font-medium text-gray-700">
+          记录你的第一笔净资产
+        </view>
+        <view class="text-sm text-gray-400 text-center leading-relaxed">
+          净资产 = 所有存款 + 投资账户 − 负债<br>点击右下角 <text class="font-bold text-green-500">+</text> 按钮录入当前总资产，开始追踪 FIRE 进度。
+        </view>
+        <view class="mt-1 text-xs text-gray-300">
+          建议每月或每季度更新一次
+        </view>
       </view>
       <view
         v-for="s in [...store.snapshots].reverse().slice(0, 10)"

app/src/store/holdings.ts

@@ -0,0 +1,42 @@
+import { defineStore } from 'pinia'
+
+export interface Holding {
+  id: string
+  name: string
+  currentValue: number
+  costBasis: number
+}
+
+export const useHoldingsStore = defineStore('holdings', () => {
+  const holdings = ref<Holding[]>([])
+
+  const totalValue = computed(() => holdings.value.reduce((s, h) => s + h.currentValue, 0))
+  const totalCost = computed(() => holdings.value.reduce((s, h) => s + h.costBasis, 0))
+  const totalPnl = computed(() => totalValue.value - totalCost.value)
+  const totalPnlPct = computed(() =>
+    totalCost.value > 0 ? (totalPnl.value / totalCost.value) * 100 : 0,
+  )
+
+  function add(name: string, currentValue: number, costBasis: number) {
+    holdings.value.push({
+      id: Date.now().toString(),
+      name,
+      currentValue,
+      costBasis,
+    })
+  }
+
+  function update(id: string, currentValue: number, costBasis: number) {
+    const h = holdings.value.find(h => h.id === id)
+    if (h) {
+      h.currentValue = currentValue
+      h.costBasis = costBasis
+    }
+  }
+
+  function remove(id: string) {
+    holdings.value = holdings.value.filter(h => h.id !== id)
+  }
+
+  return { holdings, totalValue, totalCost, totalPnl, totalPnlPct, add, update, remove }
+}, { persist: true })

app/src/store/settings.ts

@@ -1,12 +1,13 @@
 import { defineStore } from 'pinia'
 
 export const useSettingsStore = defineStore('settings', () => {
-  const target = ref(710000)         // 目標本金（元）
+  const target = ref(710000)         // 目标本金（元）
   const withdrawRate = ref(0.035)    // 安全提取率 3.5%
   const monthlyInvest = ref(1500)    // 每月定投（元）
-  const partTimeIncome = ref(40000)  // 兼職年收入（元）
-  const annualExpense = ref(65000)   // 年開支（元）
-  const initialCapital = ref(70000)  // 起始本金（元）
+  const partTimeIncome = ref(40000)  // 兼职年收入（元）
+  const annualExpense = ref(65000)   // 年支出（元）
+  const initialCapital = ref(70000)  // 起始本金（元），无进度记录时的回退值
+  const annualReturn = ref(0.06)     // 投资年化收益率 6%
 
   return {
     target,
@@ -15,6 +16,7 @@ export const useSettingsStore = defineStore('settings', () => {
     partTimeIncome,
     annualExpense,
     initialCapital,
+    annualReturn,
   }
 }, {
   persist: true,