The home feed stops rendering a bar its stylesheet always hides, and .feed-head leaves the stylesheet #5216

Intent: no markup that no one can see. src/web/studio/home.ts (near line 267) renders <div class="bar feed-head"> with a 'What you asked for' link, and src/web/studio/feed_style.ts hides it with display: none !important.

Done:

• [ ] the bar and the .feed-head rule are gone, and the class is gone from docs/DESIGN.md §5d
• [ ] /asked can still be reached from the home page or the topbar as it is today (the pull says where); if it can't, the link moves into the home tabs
• [ ] a test asserts the home's HTML has no feed-head
• [ ] bun scripts/design-lint.ts passes

Fresh: replaces #5064. Both tries failed on tests it never touched (forge-degraded; the sleeping preview, #5186). This waits for those fixes.

duplicate of #5064