/system groups crew:<name> processes as the crew kind #2811

Part of #2793. This is plain data and doesn't wait for the label to exist.

Done:

• [ ] src/system/view.ts kindOf maps crew:<name> to a crew kind. forAgent hides other agents' crew groups the way it hides checks and apps, and the page lists crew after forge in its kind order
• [ ] test: a synthetic process table with forge, check:1, app:x/prod and crew:atlas rows gives four groups in that order, and forAgent for another agent hides crew:atlas

Files: src/system/view.ts, its test.