Can a simple yes-or-no tarot pull really

Not as a verdict. A one-card yes-or-no won't settle a big decision, but it can tell you what a big decision actually turns on.

The draw — 单张牌 / single, position 当前指引 (current guidance): King of Pentacles, upright. A court card, and an Earth one: the steward, the budget, the number that has to hold up. As guidance it isn't saying "yes" or "no" to anything — it's saying the resolution of this lives in the material facts, not in the omen. Anything else you draw on top of a decision you haven't costed out is asking the deck to do arithmetic.

So, conditionally: if you can get your hands on the actual figures — what it costs, how much time it takes, what you'd have to give up or leave behind — then the decision turns into something you can settle yourself, and any yes-or-no pull afterward is decoration. If those numbers stay out of reach no matter how you frame the question, then no card will move this; what is blocking you is missing information, not an unanswered question.

The one step, inside 48 hours, before any further pull: get a single hard number from the other side — the actual cost, the actual hours, the actual thing you'd forfeit — from the document, the record, or the one person who'd really know, and put both sides of it on one page. When that page exists, the yes-or-no stops mattering.

If you tell me what the decision actually is, I can pull a proper three-card spread on it instead of the general one.