Claude Code tip: before you ship a vibe-coded site, have Opus 5.5 send out 𝟱 𝘀𝘂𝗯𝗮𝗴𝗲𝗻𝘁𝘀 to check 𝘁𝗵𝗲𝘀𝗲 𝟮𝟬 𝘁𝗵𝗶𝗻𝗴𝘀, then fix them all in one pass:

Consistent design
→ Write a DESIGN.md first, and make every color, font size, spacing and corner radius follow it
→ Keep the palette restrained and the type hierarchy clear
→ Make every button, card and input of the same kind look alike
→ Too flat? Add emphasis. Too crowded? Cut
→ Keep text readable on both dark and light backgrounds

On mobile
→ No sideways scrolling, and nothing spilling off the screen
→ Add a mobile menu
→ Make buttons big enough to tap
→ Keep the layout intact when the text is enlarged

Every state
→ Give loading, empty and error states a proper screen
→ Give every button feedback, with its own hover, pressed and disabled look
→ Show form errors right where they happen, plus submitting, success and failure messages
→ Add transitions to modals, dropdowns and tab switches

Use it like a real user
→ Click through the core flows, like sign-up and checkout, from start to finish
→ Find buttons that do nothing and links that are broken
→ Make sure the whole thing works with just a keyboard

Before launch
→ Say what you do in one line on the home page
→ Give each page one main button you want people to click
→ Give every page a title, a description and a favicon
→ Delete all placeholder text

For effort, follow Anthropic's cost guide from yesterday: medium is for well-scoped daily work. The default medium is enough for these 20 fixes; raise it for the harder ones. Thariq tested it: turning effort up mostly buys more verification and edge-case testing.

Send this whole post to Claude Code. If you need to, add this line at the end 👇
"Send one subagent per group to check it without editing anything. Then fix everything yourself from their lists, so no two agents edit the same file. If a group is more complex, raise that subagent's effort. Show me the list of issues first, don't change anything until I confirm, and when you're done, give me before-and-after screenshots."