add:ticket detail

frontend/src/lib/ticket.ts

@@ -0,0 +1,16 @@
+export interface ParsedDescription {
+  txnId: string | null      // e.g. "TXN-48291"
+  txnLine: string | null    // e.g. "TXN-48291 — Pro Plan — Monthly $12.00 on Mar 1, 2026"
+  body: string              // the user-written description, without the prefix
+}
+
+export function parseDescription(description: string): ParsedDescription {
+  const match = description.match(/^\[Transaction: ([^ ]+)([^\]]*)\]\n?\n?(.*)$/s)
+  if (!match) return { txnId: null, txnLine: null, body: description }
+
+  const txnId = match[1].trim()
+  const txnLine = (txnId + match[2]).trim()
+  const body = match[3].trim()
+
+  return { txnId, txnLine, body }
+}