chrome-use test — browser test suites

Turn the repetitive "open it, click around, check it's right" work into a re-runnable suite, like unit tests for the frontend. Every time you find a regression, add a case — the suite gets more valuable the more you use it.

chrome-use test <suite.yaml> [--launch | --session <name>] [--json]

• Exit code 0 if all cases pass, 1 if any fail → drop it straight into CI.
• Default: launches a fresh isolated browser (deterministic, repeatable) in a cu-test session and closes it after. Pass --session <name> to run against an already-connected session (e.g. the live Chrome via chrome-use extension connect).
• Failed cases auto-save a screenshot to cu-test-artifacts/<case>.png.

Suite format (YAML)