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The parser and classifier run synchronously on the event loop over text a pane, a container or an ssh host wrote, and one process could stall the server for every session: 4 s for a 128 KiB argv of `/pi/` tokens, about a minute for 2 MiB of socket rows. The `cli.js` launcher rule leaves the signature regex for a per-word scan, socket rows dedupe through a Set, the process row regex takes the `s` flag (a bare CR made `$` fail and `\s+` give its spaces back, quadratic in a row), argv and pane command are cut at FOREIGN_MAX_ARGV_CHARS, and one matcher per scan answers each distinct argv once, since every pane of a hostile host can claim the same process tree. Measured on a private tmux server with the same 131 KiB argv: the largest event-loop gap went from 3991 ms to 45 ms. The worst scan the caps allow takes about 80 ms. Socket rows stay uncapped on purpose (see the docs). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>