ignitai: Convert PDF to CSV aiv1.8

What changed

• MonetizationTransitioned from an unlimited plan to a capped usage model of 80 pages per week.
• MonetizationIntroduced the ability to purchase additional page packs that do not expire.
• UXAdded a preview showing the number of pages a conversion will consume before it begins.

Original release notes

• Your plan includes 80 pages a week, up to 320 a month.
  Unused pages don't carry over.
• Need more? Tap "Get More Pages…" to buy extra packs.
• Pages you buy never expire. They stay yours, even if you cancel.
• When you set up a conversion, we show you how many pages it will
  use before you start it.

Why pages, and why now

This plan used to be described as unlimited, and we're sorry for the
confusion. Every page you convert is processed by one of the most advanced
AI models available, and each page costs us real money. Rather than quietly
switch to a cheaper model that makes more mistakes on your documents, we'd
rather be clear about what's included — and keep the quality high.