feat: initialize CalBook project with comprehensive scheduling, admin, and deployment infrastructure

lib/email/shortcodes.ts

@@ -0,0 +1,21 @@
+const DEFAULT_MEETING_BUTTON_SHORTCODES = [
+  "{{meetingButton}}",
+  "{{jitsiButton}}",
+  "[meeting_button]",
+  "[jitsi_button]"
+];
+
+export function normalizeMeetingButtonTemplate(
+  template: string,
+  shortcodes: string[] = DEFAULT_MEETING_BUTTON_SHORTCODES
+) {
+  if (!template) return template;
+
+  const hasShortcode = shortcodes.some((token) => template.includes(token));
+  if (hasShortcode) return template;
+
+  return template
+    .replace(/Jitsi-Link:\s*\{\{meetingUrl\}\}/gi, "{{meetingButton}}")
+    .replace(/Jitsi:\s*\{\{meetingUrl\}\}/gi, "{{meetingButton}}")
+    .replace(/\{\{meetingUrl\}\}/g, "{{meetingButton}}");
+}