The repository head's actions draw §5's bar and .repo-actions leaves the stylesheet (rebase branch scout/4594-the-repository-head-s-actions-draw-5-s-b)

Later: Design cleanup, not flow work: the repository is flow only until the #5930 alarms stay clear.

Replaces #4594. The work is on branch scout/4594-the-repository-head-s-actions-draw-5-s-b (head be011fa3, pull #6299, closed).

Done:

[ ] The branch is rebased on main and opened as a new pull.
[ ] The actions in the repository head (src/web/chrome.ts) are §5's .bar; .repo-actions is gone from src/web/style/content.ts and docs/design/sections/5d-page-local-classes.md; a test asserts no repo-actions.
[ ] At 360px wide, with every action shown, the title row does not overflow: the bar wraps, or the title shrinks with min-width: 0 (juniper's review ask on #6299). The pull says which, and how it was looked at.

Before pushing: bun scripts/design-lint.ts and bun test test/design-lint.test.ts.

The repository head's actions draw §5's bar and .repo-actions leaves the stylesheet (rebase branch scout/4594-the-repository-head-s-actions-draw-5-s-b) #6503