feat: create standalone native fnOS repository

app-src/web/src/utils/version.ts

@@ -0,0 +1,56 @@
+import { GITHUB_REPO } from '../constants/app'
+
+export interface LatestRelease {
+  version: string
+  url: string
+}
+
+function parseVersion(version: string): number[] {
+  const clean = version.replace(/^v/i, '').split('-')[0]
+  return clean.split('.').map((part) => Number.parseInt(part, 10) || 0)
+}
+
+export function compareVersions(a: string, b: string): number {
+  const left = parseVersion(a)
+  const right = parseVersion(b)
+  const length = Math.max(left.length, right.length)
+
+  for (let i = 0; i < length; i += 1) {
+    const diff = (left[i] ?? 0) - (right[i] ?? 0)
+    if (diff !== 0) {
+      return diff > 0 ? 1 : -1
+    }
+  }
+
+  return 0
+}
+
+export function isNewerVersion(latest: string, current: string): boolean {
+  if (!latest || !current || current === 'dev') {
+    return false
+  }
+  return compareVersions(latest, current) > 0
+}
+
+export async function fetchLatestRelease(): Promise<LatestRelease | null> {
+  try {
+    const response = await fetch(`https://api.github.com/repos/${GITHUB_REPO}/releases/latest`, {
+      headers: { Accept: 'application/vnd.github+json' },
+    })
+    if (!response.ok) {
+      return null
+    }
+
+    const data = (await response.json()) as { tag_name?: string; html_url?: string }
+    if (!data.tag_name || !data.html_url) {
+      return null
+    }
+
+    return {
+      version: data.tag_name.replace(/^v/i, ''),
+      url: data.html_url,
+    }
+  } catch {
+    return null
+  }
+}