Scoped AI cleanup and browser verification

Inspect only the check's own processes

On Linux, the opt-in AI check reads its own process subtree instead of scanning the entire host. Timeout and interruption cleanup includes worker-thread children, preserves sibling work, and reports inspection errors. Other Unix hosts retain bounded process-table inspection.

Finish browser checks reliably

Repository browser tools now reject commands when their connection closes. The keyed benchmark shares that transport, waits for its browser process to exit, and prints measurements before reporting a budget failure. Explicit non-browser test runs no longer launch the article-search browser checks.

Preserve application output and evidence

Generator 0.1.160 retains its existing core compatibility range and default project. Compiler behavior and application browser output are unchanged. The required-Chrome suite and package checks pass; earlier failures and the unsuccessful performance experiment remain recorded.

This release does not establish faster application interactions, broader React compatibility, or lower AI-token costs. The separate AI-delivery gate for 1.0 remains blocked.