chore(build): automatically embed git commit hash in version string

web/vite.config.ts

@@ -1,7 +1,15 @@
 import { defineConfig } from 'vite'
 import react from '@vitejs/plugin-react'
+import { execSync } from 'child_process'
 
-const gitSha = process.env.GIT_SHA || 'dev'
+let gitSha = process.env.GIT_SHA
+if (!gitSha) {
+  try {
+    gitSha = execSync('git rev-parse --short HEAD').toString().trim()
+  } catch (e) {
+    gitSha = 'dev'
+  }
+}
 
 // https://vite.dev/config/
 export default defineConfig({