fix: 收口发布候选版本的时间和配置问题

src/main/services/local-query-api-service.ts

@@ -86,9 +86,9 @@ function rangeEndMs(range: ResolvedTimeRange, fallbackNowMs: number): number {
 
 /** 本地时间（`MM-DD HH:mm`）；只用于给模型一句可引用的人话，不参与任何判断。 */
 function formatLocalMinute(ms: number): string {
-  const date = new Date(ms)
+  const date = new Date(ms + 8 * 60 * 60 * 1000)
   const pad = (value: number): string => String(value).padStart(2, '0')
-  return `${pad(date.getMonth() + 1)}-${pad(date.getDate())} ${pad(date.getHours())}:${pad(date.getMinutes())}`
+  return `${pad(date.getUTCMonth() + 1)}-${pad(date.getUTCDate())} ${pad(date.getUTCHours())}:${pad(date.getUTCMinutes())}`
 }
 
 /**

src/shared/ai-search.ts

@@ -399,14 +399,27 @@ export const aiSearchRangeStart = (range: AiSearchRange): number | undefined =>
   return Math.floor(Date.now() / 1000) - (range === '7d' ? 7 : 30) * 86400
 }
 
-const dayStart = (date: Date): number =>
-  Math.floor(new Date(date.getFullYear(), date.getMonth(), date.getDate()).getTime() / 1000)
+// Natural-language dates use the app's explicit China Standard Time calendar,
+// independent of the host OS timezone (CI may run in UTC).
+const APP_TIMEZONE_OFFSET_MS = 8 * 60 * 60 * 1000
+const appCalendar = (date: Date): Date => new Date(date.getTime() + APP_TIMEZONE_OFFSET_MS)
+const appDateEpochSeconds = (year: number, month: number, day: number): number =>
+  Math.floor((Date.UTC(year, month, day) - APP_TIMEZONE_OFFSET_MS) / 1000)
 
-const currentYearStart = (date: Date): number =>
-  Math.floor(new Date(date.getFullYear(), 0, 1).getTime() / 1000)
+const dayStart = (date: Date): number => {
+  const local = appCalendar(date)
+  return appDateEpochSeconds(local.getUTCFullYear(), local.getUTCMonth(), local.getUTCDate())
+}
 
-const currentMonthStart = (date: Date): number =>
-  Math.floor(new Date(date.getFullYear(), date.getMonth(), 1).getTime() / 1000)
+const currentYearStart = (date: Date): number => {
+  const local = appCalendar(date)
+  return appDateEpochSeconds(local.getUTCFullYear(), 0, 1)
+}
+
+const currentMonthStart = (date: Date): number => {
+  const local = appCalendar(date)
+  return appDateEpochSeconds(local.getUTCFullYear(), local.getUTCMonth(), 1)
+}
 
 const CHINESE_NUMBERS: Record<string, number> = {
   一: 1,
@@ -468,9 +481,12 @@ export const inferAiSearchTimeRange = (
   }
   if (/这个月|本月/.test(query)) return fromQuery(currentMonthStart(now), '本月', '用户说“这个月”')
   if (/上个月/.test(query)) {
-    const startDate = new Date(now.getFullYear(), now.getMonth() - 1, 1)
-    const end = Math.floor(new Date(now.getFullYear(), now.getMonth(), 1).getTime() / 1000) - 1
-    const start = Math.floor(startDate.getTime() / 1000)
+    const local = appCalendar(now)
+    const year = local.getUTCFullYear()
+    const month = local.getUTCMonth()
+    const startDate = new Date(Date.UTC(year, month - 1, 1))
+    const end = appDateEpochSeconds(year, month, 1) - 1
+    const start = appDateEpochSeconds(startDate.getUTCFullYear(), startDate.getUTCMonth(), 1)
     return {
       startTime: start,
       endTime: end,
@@ -492,10 +508,11 @@ export const inferAiSearchTimeRange = (
     }
   }
   if (/去年/.test(query)) {
-    const startDate = new Date(now.getFullYear() - 1, 0, 1)
+    const year = appCalendar(now).getUTCFullYear()
+    const startDate = new Date(Date.UTC(year - 1, 0, 1))
     return {
-      startTime: Math.floor(startDate.getTime() / 1000),
-      endTime: Math.floor(new Date(now.getFullYear(), 0, 1).getTime() / 1000) - 1,
+      startTime: appDateEpochSeconds(year - 1, 0, 1),
+      endTime: appDateEpochSeconds(year, 0, 1) - 1,
       label: `${startDate.getFullYear()}年`,
       reason: '用户说“去年”',
       source: 'query'