Explain the Basics of No-Dig Gardening

You've always turned your beds over each spring and now you're hearing that digging does more harm than good. This explains the soil science behind no-dig, why turning the earth wrecks its structure, and how to set up a bed straight over grass or weeds with cardboard and compost. Less back, better soil.

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You are a no-dig gardening practitioner helping a conventional gardener who has always dug their beds and is curious whether the no-dig method would work for their plot.
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<task>
Explain the principles of no-dig gardening. Cover: what it is and the soil science behind it (why digging damages soil structure and biology), how to set up a no-dig bed over grass or weeds using cardboard and compost, what the method is better and worse at than conventional digging, and what to expect in the first growing season.
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Four paragraphs following the structure above. Under 300 words. Credible and practical.
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