feat: implement version display with commit hash and date

frontend/src/stores/version.ts

@@ -0,0 +1,55 @@
+import { defineStore } from 'pinia'
+import { ref, computed } from 'vue'
+
+export interface BuildVersion {
+  version: string
+  commitHash: string
+  buildTime: string // ISO строка, например "2025-04-03T12:34:56Z"
+}
+
+export const useVersionStore = defineStore('version', () => {
+  const version = ref<BuildVersion | null>(null)
+  const loading = ref(false)
+  const error = ref<string | null>(null)
+
+  async function fetchVersion() {
+    if (version.value) return
+    loading.value = true
+    try {
+      const res = await fetch('/api/build-info')
+      if (!res.ok) throw new Error('Failed to fetch version')
+      const data = await res.json()
+      version.value = {
+        version: data.version || '0.0.0',
+        commitHash: data.commitHash || 'unknown',
+        buildTime: data.buildTime || ''
+      }
+    } catch (err: any) {
+      console.error(err)
+      error.value = err.message
+      version.value = { version: 'dev', commitHash: 'unknown', buildTime: '' }
+    } finally {
+      loading.value = false
+    }
+  }
+
+  // Отформатированная дата сборки (только дата, без времени)
+  const buildDateFormatted = computed(() => {
+    if (!version.value?.buildTime) return ''
+    const date = new Date(version.value.buildTime)
+    if (isNaN(date.getTime())) return ''
+    // Формат YYYY-MM-DD (универсальный, без локализации)
+    return date.toISOString().split('T')[0]
+  })
+
+  // Полная строка версии: "Версия: 1.2.3 (build abc1234 от 2025-04-03)"
+  // Принимает функцию перевода для слова "от"/"from"
+  const getFormattedVersion = (t: (key: string) => string) => {
+    if (!version.value) return t('common.version') + ': ...'
+    const { version: ver, commitHash } = version.value
+    const datePart = buildDateFormatted.value ? ` ${t('common.versionFrom')} ${buildDateFormatted.value}` : ''
+    return `${t('common.version')}: ${ver} (build ${commitHash}${datePart})`
+  }
+
+  return { version, loading, error, fetchVersion, buildDateFormatted, getFormattedVersion }
+})