[FEATURE]:Misleading upsell: Go subscription does not "continue" the free session

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Describe the enhancement you want to request

Hi OpenCode team,

I'm a paying Go subscriber and I want to share exactly why I feel misled, so you can fix the copy and the product.

I was working on a free model. When its limit ran out, the UI told me to subscribe to Go to continue. I interpreted this as "your session/work will continue."
It does not. Go is a different set of models with their own dollar-based limits ($12/5h, $30/week, $60/month; premium models even capped at $15/month). On a premium model, the $10 budget is realistically consumed in 2-3 heavy sessions.
Being a subscriber gives me no benefit on the free models, the same rate limits as a non-subscriber. As a subscriber, I expected preferential access to free models but got none.
My suggestions:

The upsell message should say "switch to Go for access to premium models", not "continue working", so users aren't misled.
Consider giving subscribers a perk on free models (higher rate limits / priority queue), so paying is visibly worth it.
Show exact per-session cost estimates before subscribing.
I believe you're developers who care about the product, that's why I'm writing instead of just leaving. I'd like to know if this is something you'll address.

No file or test is named. Start by tracing the UI flow that displays the Go upsell after a free-model limit is reached, then review the subscription and model-limit behavior described here. Done means the wording no longer implies that the current session will continue, with any subscriber benefits and cost estimates explicitly scoped and tested.