CaseMark stops its demo from disguising spent budgets as broken documents

In CaseMark's demo, every user gets a small spending allowance against the AI behind the product. When someone exhausted that allowance, document previews simply broke - a generated file would sit ready in the database, but the viewer showed a generic load failure that looked like a bug. The real cause, a depleted budget, was being swallowed before it reached the screen.

CaseMark threaded that budget signal all the way up to the browser and replaced the noise with a fixed, actionable line: add your own Case.dev key under Account settings, or ask the demo operator to reset your budget. The team also retuned how the demo meters cost - charging mostly for actual AI usage and settling against real prices rather than rough reserves - and added clean handling for oversized uploads.