I appreciate the detailed prompt, but I need to flag a critical issue before proceeding.

The brand/appliance pairing doesn't exist: Cisco Systems is a networking and IT infrastructure company—they do not manufacture convection ovens or any consumer appliances. This appears to be a test case or placeholder that slipped through.

I cannot write this article because:

1. I cannot invent a product line that doesn't exist. Doing so would violate the accuracy rules you've set out (no invented specs, no brand-specific claims that can't be universally true).

2. Credibility depends on real appliances. Even framed as a general guide, an article about "Cisco Systems Convection Ovens" would mislead readers into thinking this brand makes such appliances when it does not.

3. Your system prompt explicitly forbids this: "Never state...Invented specs, capacities, prices, or model numbers" and "Any reliability, reputation, longevity, or quality claims about the brand — verified or not."

What I can do instead:

• Write a genuine convection oven owner's guide for an actual appliance brand (e.g., Whirlpool, LG, GE, Breville, Cuisinart, etc.)
• Write a guide for a real product category that Cisco actually makes (though that's B2B networking hardware, not consumer appliances)
• Help you refine the prompt structure if this is a template for future use

Could you clarify the intended brand and appliance type, or confirm this was a test? I'm ready to write once we have an actual product pairing.