chore: restructure project and add i18n support

- Reorganize project structure with new electron and shared directories
- Add comprehensive i18n support with Chinese, English, and Japanese locales
- Update build configurations and TypeScript paths for new structure
- Add various UI components including chat interface and task management
- Include Windows release binaries and localization files
- Update dependencies and fix import paths throughout the codebase

src/pages/home/components/ChatNameTime.vue

@@ -0,0 +1,65 @@
+<template>
+  <div class="flex items-start gap-2 pt-0.5 mb-2" :class="props.showReverse ? 'flex-row-reverse' : 'flex-row'">
+    <span class="text-xs text-[#4E5969]">{{ props.msg?.messageRole === MessageRole.AI ? 'NIANXX' : '我' }}</span>
+    <span class="text-xs text-[#86909C]">{{ formattedTime }}</span>
+  </div>
+</template>
+
+<script lang="ts" setup>
+import { computed } from 'vue'
+import { ChatMessage, MessageRole } from '../model/ChatModel'
+
+interface Props {
+  msg?: ChatMessage
+  showReverse?: boolean
+}
+
+const props = withDefaults(defineProps<Props>(), {
+  showReverse: false
+})
+
+const formattedTime = computed(() => {
+  const tsRaw = props.msg?.timestamp
+  if (tsRaw == null) return ''
+  let ts = Number(tsRaw)
+  if (isNaN(ts)) return ''
+
+  const pad = (n: number) => String(n).padStart(2, '0')
+
+  // Heuristic:
+  // - If ts < 1e9, treat as a duration in seconds and convert to dd-hh-mm (legacy)
+  // - If ts looks like an epoch (seconds or ms) format to YYYY年MM月DD日 HH:mm:ss
+  if (ts < 1e9) {
+    const totalSeconds = Math.floor(ts)
+    const days = Math.floor(totalSeconds / 86400)
+    const hours = Math.floor((totalSeconds % 86400) / 3600)
+    const minutes = Math.floor((totalSeconds % 3600) / 60)
+    return `${String(days).padStart(2, '0')}-${pad(hours)}-${pad(minutes)}`
+  }
+
+  // epoch handling: convert seconds -> ms when appropriate
+  if (ts < 1e12) ts = ts * 1000
+  const d = new Date(ts)
+  if (isNaN(d.getTime())) return ''
+  const Y = d.getFullYear()
+  const M = pad(d.getMonth() + 1)
+  const D = pad(d.getDate())
+  const h = pad(d.getHours())
+  const m = pad(d.getMinutes())
+  const s = pad(d.getSeconds())
+
+  // If the timestamp is the same calendar day as today, show only time HH:mm:ss
+  const now = new Date()
+  const sameDay = now.getFullYear() === d.getFullYear()
+    && now.getMonth() === d.getMonth()
+    && now.getDate() === d.getDate()
+
+  if (sameDay) {
+    return `${h}:${m}:${s}`
+  }
+
+  // otherwise show YYYY-MM-DD HH:mm:ss
+  return `${Y}-${M}-${D} ${h}:${m}:${s}`
+})
+
+</script>