try to fix data fetching issue

package-lock.json

@@ -488,6 +488,7 @@
       "resolved": "https://registry.npmjs.org/@fortawesome/fontawesome-svg-core/-/fontawesome-svg-core-7.1.0.tgz",
       "integrity": "sha512-fNxRUk1KhjSbnbuBxlWSnBLKLBNun52ZBTcs22H/xEEzM6Ap81ZFTQ4bZBxVQGQgVY0xugKGoRcCbaKjLQ3XZA==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@fortawesome/fontawesome-common-types": "7.1.0"
       },
@@ -1202,6 +1203,7 @@
       "resolved": "https://registry.npmjs.org/chart.js/-/chart.js-4.5.1.tgz",
       "integrity": "sha512-GIjfiT9dbmHRiYi6Nl2yFCq7kkwdkp1W/lp2J99rX0yo9tgJGn3lKQATztIjb5tVtevcBtIdICNWqlq5+E8/Pw==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@kurkle/color": "^0.3.0"
       },
@@ -1238,6 +1240,7 @@
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/echarts/-/echarts-6.0.0.tgz",
       "integrity": "sha512-Tte/grDQRiETQP4xz3iZWSvoHrkCQtwqd6hs+mifXcjrCuo2iKWbajFObuLJVBlDIJlOzgQPd1hsaKt/3+OMkQ==",
+      "peer": true,
       "dependencies": {
         "tslib": "2.3.0",
         "zrender": "6.0.0"
@@ -3565,6 +3568,7 @@
       "version": "4.0.3",
       "inBundle": true,
       "license": "MIT",
+      "peer": true,
       "engines": {
         "node": ">=12"
       },
@@ -3923,6 +3927,7 @@
       "integrity": "sha512-j3lYzGC3P+B5Yfy/pfKNgVEg4+UtcIJcVRt2cDjIOmhLourAqPqf8P7acgxeiSgUB7E3p2P8/3gNIgDLpwzs4g==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "esbuild": "^0.21.3",
         "postcss": "^8.4.43",
@@ -3982,6 +3987,7 @@
       "resolved": "https://registry.npmjs.org/vue/-/vue-3.5.22.tgz",
       "integrity": "sha512-toaZjQ3a/G/mYaLSbV+QsQhIdMo9x5rrqIpYRObsJ6T/J+RyCSFwN2LHNVH9v8uIcljDNa3QzPVdv3Y6b9hAJQ==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@vue/compiler-dom": "3.5.22",
         "@vue/compiler-sfc": "3.5.22",

src/lib/dataService.js

@@ -1,6 +1,6 @@
 import { supabase } from './supabase.js'
 import { getAllDecisions, setAllDecisions, clearAllDecisions } from './dataCache.js'
-import { writeRawDecisions, clearAllStores, readAllRawDecisions } from './idb.js'
+import { writeRawDecisions, clearAllStores, readAllRawDecisions, readRawUpdatedAtMax } from './idb.js'
 import { filterRowsToNyseTradingDays, countNonTradingDaysBetweenForAsset, countTradingDaysBetweenForAsset } from './marketCalendar.js'
 import { computeBuyHoldEquity, computeStrategyEquity, calculateMetricsFromSeries, computeWinRate } from './perf.js'
 import { STRATEGIES } from './strategies.js'
@@ -435,30 +435,50 @@ class DataService {
           }
         }
 
-        // 检查缓存数据是否是最新的：从 Supabase 查询最新日期，如果缓存中没有最新日期，则强制刷新
+        // 检查缓存数据是否是最新的：从 Supabase 查询最新的 updated_at，如果缓存中的 updated_at 比数据库旧，则强制刷新
         if (all && all.length > 0) {
           try {
-            // 获取缓存中的最新日期
-            const cachedDates = all.map(r => r && r.date).filter(Boolean).sort()
-            const cachedMaxDate = cachedDates.length > 0 ? cachedDates[cachedDates.length - 1] : null
+            // 获取缓存中的最大 updated_at（从 IndexedDB 读取）
+            const cachedMaxUpdatedAt = await readRawUpdatedAtMax()
             
-            // 从 Supabase 查询最新日期（只查询日期，不查询所有数据）
+            // 从 Supabase 查询最新的 updated_at（只查询 updated_at，不查询所有数据）
             const { data: latestData, error } = await supabase
               .from('trading_decisions')
-              .select('date')
-              .order('date', { ascending: false })
+              .select('updated_at')
+              .order('updated_at', { ascending: false })
               .limit(1)
             
             if (!error && latestData && latestData.length > 0) {
-              const dbMaxDate = latestData[0].date
-              const cachedMaxDateStr = cachedMaxDate ? (typeof cachedMaxDate === 'string' ? cachedMaxDate.split('T')[0] : cachedMaxDate) : null
-              const dbMaxDateStr = typeof dbMaxDate === 'string' ? dbMaxDate.split('T')[0] : dbMaxDate
+              const dbMaxUpdatedAt = latestData[0].updated_at
               
-              console.log(`[DataService] Cache check: cached max date = ${cachedMaxDateStr}, DB max date = ${dbMaxDateStr}`)
+              console.log(`[DataService] Cache check: cached max updated_at = ${cachedMaxUpdatedAt}, DB max updated_at = ${dbMaxUpdatedAt}`)
               
-              // 如果数据库中的最新日期比缓存中的新，强制刷新
-              if (cachedMaxDateStr && dbMaxDateStr && dbMaxDateStr > cachedMaxDateStr) {
-                console.log(`[DataService] Cache is stale (${cachedMaxDateStr} < ${dbMaxDateStr}), fetching fresh data...`)
+              // 使用 Date 对象比较时间，避免时区问题
+              // 将时间字符串转换为 Date 对象进行比较，确保跨时区正确
+              if (cachedMaxUpdatedAt && dbMaxUpdatedAt) {
+                const cachedDate = new Date(cachedMaxUpdatedAt)
+                const dbDate = new Date(dbMaxUpdatedAt)
+                
+                // 检查日期是否有效
+                if (isNaN(cachedDate.getTime()) || isNaN(dbDate.getTime())) {
+                  console.warn(`[DataService] Invalid date format detected, forcing refresh`)
+                  await clearAllStores()
+                  clearAllDecisions()
+                  all = await this._fetchAllFromRemote()
+                  setAllDecisions(all)
+                  await writeRawDecisions(all)
+                } else if (dbDate > cachedDate) {
+                  // 数据库中的时间更新，强制刷新
+                  console.log(`[DataService] Cache is stale (${cachedMaxUpdatedAt} < ${dbMaxUpdatedAt}), fetching fresh data...`)
+                  await clearAllStores()
+                  clearAllDecisions()
+                  all = await this._fetchAllFromRemote()
+                  setAllDecisions(all)
+                  await writeRawDecisions(all)
+                }
+              } else if (!cachedMaxUpdatedAt) {
+                // 如果缓存中没有 updated_at，也强制刷新
+                console.log(`[DataService] Cache missing updated_at, fetching fresh data...`)
                 await clearAllStores()
                 clearAllDecisions()
                 all = await this._fetchAllFromRemote()