Merge origin/main into feat/external-2fa-codes. Resolve formatting
conflicts caused by biome rollout; preserve both feature streams:
PR's external 2FA token + signing-session 2FA proof additions plus
main's RateLimit/RecipientExpired/signingReminders/date-auto-insert.
In complete-document-with-token.ts, drop the duplicate early
field-fetching block introduced when main moved that logic later
with date auto-insert support; keep the EXTERNAL_TWO_FACTOR_AUTH
check using derivedRecipientActionAuth.
Seems there's a memory leak in gpu rendering with skia canvas
where contexts can live for much longer than expected escaping gc
cleanup
CPU rendering seems better albeit a bit slower.
Synthetic tests were ran with `--expose-gc` to simulate load over time.
Add proper cleanup for PDF.js pages and loading task to prevent memory
leaks when
processing multiple PDF pages. Ensure page cleanup is called after each
page is
rendered and both PDF document and loading task are properly destroyed
with error
handling.