feat: 实现生辰信息存储与真太阳时计算

- 新增 ADR 文档记录生辰信息存储设计决策
- 新增真太阳时计算模块 (solarTime.ts)，基于 Spencer 1971 时差方程
- 新增城市经纬度内置数据库，覆盖全国主要区县，系统自动匹配坐标
- 更新紫微页面：移除手动经纬度输入，改为 500ms 防抖自动定位
- 更新所有 9 个语言文件，替换经纬度提示为定位提示

everything-is-suitable-uniapp/src/pages/ziwei/index.vue

@@ -24,16 +24,9 @@
       <view class="form-group">
         <text class="label">{{ $t('ziwei.birthPlace') }}</text>
         <input class="text-input" :value="birthPlace" @input="onBirthPlaceChange" :placeholder="$t('ziwei.birthPlaceHint')" />
-      </view>
-      <view class="form-row">
-        <view class="form-group form-half">
-          <text class="label">{{ $t('ziwei.longitude') }}</text>
-          <input class="text-input" type="digit" :value="longitude" @input="onLongitudeChange" :placeholder="$t('ziwei.longitudeHint')" />
-        </view>
-        <view class="form-group form-half">
-          <text class="label">{{ $t('ziwei.latitude') }}</text>
-          <input class="text-input" type="digit" :value="latitude" @input="onLatitudeChange" :placeholder="$t('ziwei.latitudeHint')" />
-        </view>
+        <text v-if="detectedLocation" class="location-hint detected">{{ detectedLocation }}</text>
+        <text v-else-if="birthPlace && birthPlace.trim().length > 2 && !isLookingUp" class="location-hint not-found">{{ $t('ziwei.locationNotFound') }}</text>
+        <text v-if="isLookingUp" class="location-hint looking-up">{{ $t('ziwei.lookingUp') }}</text>
       </view>
     </view>
 
@@ -89,6 +82,7 @@ import { onShow } from '@dcloudio/uni-app'
 import { ZiweiService } from '../../services/ziweiService'
 import { PalaceType, EarthlyBranch, MajorStar } from '../../algorithms/enums'
 import type { ZiweiChart } from '../../algorithms/types'
+import { lookupCityCoordinates } from '../../data/cityCoordinates'
 
 const ziweiService = new ZiweiService()
 const { t } = useI18n()
@@ -101,11 +95,13 @@ const birthDate = ref('')
 const hourIndex = ref(0)
 const gender = ref<'male' | 'female'>('male')
 const birthPlace = ref('')
-const longitude = ref('')
-const latitude = ref('')
 const isCalculating = ref(false)
+const isLookingUp = ref(false)
+const detectedLocation = ref('')
 const chart = ref<ZiweiChart | null>(null)
 
+let lookupTimer: ReturnType<typeof setTimeout> | null = null
+
 const hourOptions = [
   '子时 (23:00-01:00)', '丑时 (01:00-03:00)', '寅时 (03:00-05:00)',
   '卯时 (05:00-07:00)', '辰时 (07:00-09:00)', '巳时 (09:00-11:00)',
@@ -123,14 +119,28 @@ const onHourChange = (e: any) => {
 
 const onBirthPlaceChange = (e: any) => {
   birthPlace.value = e.detail.value
+  detectedLocation.value = ''
+  autoLookupCoordinates(birthPlace.value)
 }
 
-const onLongitudeChange = (e: any) => {
-  longitude.value = e.detail.value
-}
-
-const onLatitudeChange = (e: any) => {
-  latitude.value = e.detail.value
+/** 自动查找出生地坐标 */
+function autoLookupCoordinates(place: string): void {
+  if (lookupTimer) {
+    clearTimeout(lookupTimer)
+  }
+  if (!place || place.trim().length < 2) {
+    isLookingUp.value = false
+    return
+  }
+  isLookingUp.value = true
+  lookupTimer = setTimeout(() => {
+    const result = lookupCityCoordinates(place)
+    isLookingUp.value = false
+    if (result) {
+      detectedLocation.value = `${result.displayName}（${result.longitude}°E, ${result.latitude}°N）`
+    }
+    lookupTimer = null
+  }, 500)
 }
 
 const getPalaceName = (palaceType: string): string => {
@@ -164,15 +174,25 @@ const generateChart = async () => {
   try {
     const hour = hourIndex.value * 2
     const birthTime = `${birthDate.value}T${String(hour).padStart(2, '0')}:00:00`
-    const lng = longitude.value ? parseFloat(longitude.value) : undefined
-    const lat = latitude.value ? parseFloat(latitude.value) : undefined
+
+    // 从检测结果中解析经纬度
+    let longitude: number | undefined
+    let latitude: number | undefined
+    if (detectedLocation.value) {
+      const coordResult = lookupCityCoordinates(birthPlace.value)
+      if (coordResult) {
+        longitude = coordResult.longitude
+        latitude = coordResult.latitude
+      }
+    }
+
     chart.value = await ziweiService.generateChart({
       birthTime,
       gender: gender.value,
       timezone: 'Asia/Shanghai',
       birthPlace: birthPlace.value || undefined,
-      longitude: lng,
-      latitude: lat,
+      longitude,
+      latitude,
     })
   } catch (e) {
     console.error('排盘失败:', e)
@@ -245,15 +265,6 @@ const generateChart = async () => {
   background-color: rgba(44, 24, 16, 255);
 }
 
-.form-row {
-  display: flex;
-  gap: 12px;
-}
-
-.form-half {
-  flex: 1;
-}
-
 .text-input {
   font-size: 15px;
   color: #333;
@@ -265,6 +276,24 @@ const generateChart = async () => {
   box-sizing: border-box;
 }
 
+.location-hint {
+  font-size: 12px;
+  margin-top: 4px;
+  display: block;
+}
+
+.location-hint.detected {
+  color: #52c41a;
+}
+
+.location-hint.not-found {
+  color: #faad14;
+}
+
+.location-hint.looking-up {
+  color: #999;
+}
+
 .action-bar {
   margin-bottom: 16px;
 }