Confirmed via multiple live rounds with Rune this is a macOS 27 beta issue,
not a Confab bug — matches an already-documented pattern in this project
(Calendar/Contacts requestAccess failing identically). Every failure
returns in single-digit milliseconds, ruled out threading, wrong API,
build/signing, and notarization; even a fresh notarized build fails
identically, while Terminal->Mail (first-party) works with no prompt at
all, and the same-style bug already has a drafted Apple Feedback report
for a different permission category.
Kept the real Apple Event attempt as the primary path (the way this
should work once the OS bug is fixed), but now time it: a failure faster
than any human could plausibly answer a real dialog (default 300ms) is
classified as the platform bug rather than a genuine denial, and the UI
falls back to opening System Settings' Automation pane directly with an
explanatory note, instead of the button silently doing nothing.
rune
1dc485badb