A clide:// link is an untrusted external vector (any webpage can fire one), so it
no longer translates to a command in parseArgv. It routes the raw URL to a new
builtin.deeplink handler that is doubly defensive: a default-deny allowlist
(kDeepLinkSafeActions — only the read-only 'open' verb; run/git/write/passthrough
rejected) AND a mandatory 'an external link wants to: … allow?' confirmation
before anything runs. Records the security boundary as D-90.
The earlier silent editor.open passthrough is replaced; open still works, now
behind the prompt. Tests cover the allowlist (the boundary) + the gating.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>