Guides: make the store ready in one week

This is the working order for the standard one-week package, alongside free theme design and setup.

1. Days 1–2: industry theme, brand color, navigation IA.
2. Days 3–4: homepage, collections, product template; wire agreed DEVDIY apps.
3. Days 5–6: copy and SEO/GEO basics (titles, descriptions, FAQs).
4. Day 7: mobile and checkout-path QA.