refactor: improve community count formatting

uniapp/src/packages_community/components/post-card.vue

@@ -174,9 +174,18 @@ const formatTime = (value: any) => {
 }
 
 const formatCount = (value: any) => {
-    const count = Number(value || 0)
-    if (count >= 10000) return `${(count / 10000).toFixed(1)}万`
-    if (count >= 1000) return `${(count / 1000).toFixed(1)}k`
+    const numericValue = Number(value)
+    if (!Number.isFinite(numericValue) || numericValue <= 0) return '0'
+
+    const count = Math.floor(numericValue)
+    const compact = (divisor: number, unit: string) => {
+        const formatted = (count / divisor).toFixed(1).replace(/\.0$/, '')
+        return `${formatted}${unit}`
+    }
+
+    if (count >= 100000000) return compact(100000000, '亿')
+    if (count >= 10000) return compact(10000, '万')
+    if (count >= 1000) return compact(1000, 'k')
     return String(count)
 }
 </script>