Generate distinct payment plan cards for a SaaS application with a highlighted selected card and the most expensive option in the center. 来源：https://prompts.chat/prompts/cmj76hbzt0006v20rbm0ocu0h
Checks a page's HTML source for the tags link previews are built from - title and description length, rel=canonical, og:title/description/type/url/site_name/locale, og:image size, aspect, alt and SVG, twitter:card and handles. Flags relative/http:// URLs, tracking parameters, theme + SEO plugin duplicates, tags in <body> and unrendered {{ }} placeholders, and returns a fixed <head> block. Includes an offline stdlib Python checker with --self-test. 来源：https://prompts.chat/prompts/cmvw34oc30001la0888uhvm7n
For cafes, restaurants, bakeries, and food trucks: turns supplier prices, yields, and recipes into exact cost per portion, food cost percent on the tax-free price, contribution margin, and a suggested price, then applies menu engineering (Star, Plowhorse, Puzzle, Dog) with a tested Python calculator. 来源：https://prompts.chat/prompts/cmv0nvwk1000ejr065goqpxr9
