chore: merge main, resolve biome formatting conflicts

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.

scripts/create-scratch.ts

@@ -1,6 +1,5 @@
 #!/usr/bin/env node
-import { readFileSync } from 'fs';
-import { mkdirSync, writeFileSync } from 'fs';
+import { mkdirSync, readFileSync, writeFileSync } from 'fs';
 import { join } from 'path';
 
 import { generateId } from './utils/generate-id';