feat(tutorials): add video training academy management with YouTube parser and live preview

app/[locale]/admin/tutorials/utils.ts

@@ -0,0 +1,27 @@
+export function extractYoutubeId(input: string): string {
+  const trimmed = input.trim()
+  if (!trimmed) return ''
+
+  // Direct 11-char ID
+  if (/^[a-zA-Z0-9_-]{11}$/.test(trimmed)) {
+    return trimmed
+  }
+
+  // youtu.be/ID
+  const shortMatch = trimmed.match(/youtu\.be\/([a-zA-Z0-9_-]{11})/)
+  if (shortMatch) return shortMatch[1]
+
+  // youtube.com/watch?v=ID
+  const watchMatch = trimmed.match(/[?&]v=([a-zA-Z0-9_-]{11})/)
+  if (watchMatch) return watchMatch[1]
+
+  // youtube.com/embed/ID
+  const embedMatch = trimmed.match(/youtube\.com\/embed\/([a-zA-Z0-9_-]{11})/)
+  if (embedMatch) return embedMatch[1]
+
+  // youtube.com/shorts/ID
+  const shortsMatch = trimmed.match(/youtube\.com\/shorts\/([a-zA-Z0-9_-]{11})/)
+  if (shortsMatch) return shortsMatch[1]
+
+  return trimmed
+}