Add a trailing-optional Prompter.open?(url) (wired in clackPrompter to
setup/lib/browser.ts openUrl, headless-safe). Extend the nc:operator handler
with two pure-polish attrs: open:<url> deep-links the operator to the page the
steps describe (after rendering, {{vars}} substituted), and a bare gate flag
turns the block into a human BARRIER — a confirm the engine waits on before the
following side-effecting directives run. Both degrade invisibly: a stripped
fence leaves the same prose, and a prompter without open/confirm skips them.
Grammar/validator awareness in skill-directives (open: var-ref check + empty-URL
flag). Applied: add-teams gates the operator blocks before the manifest build +
restart (fixes the manifest-builds-before-the-Azure-app-exists hazard) and opens
the Azure portal; add-telegram opens the t.me bot deep-link; add-discord opens
the OAuth invite URL (pre-filled with the captured application_id).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
gavrielc
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