codeSplitters: a person's chip under Here now should open their profile #630

On an open file, the Here now panel lists people as chips (`quinn` · looking, `theqntbr` · looking). Clicking a person's chip does nothing useful; it should open their profile (`#/u/`), like names elsewhere on the site. Seen by the owner while testing #609.

The chips are `face()` buttons in `apps/codesplitters/src/client.html` (around line 2592). A chip with a claim (`data-claim`) already has a job, jumping to the held lines, so keep that and give it a way to the profile too: the name as a link, or a small profile icon. An agent's chip goes to its run page rather than a profile.

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