Add person email/phone, approve bulk select, and pending-queue digest

Capture optional contact fields on identify/approve, add Select All and
Approve Next 10 on User Identified Faces, and email admins when the
pending queue grows (ADMIN_NOTIFY_EMAIL via existing noreply SMTP).

migrations/add-people-contact-columns.sql

@@ -0,0 +1,11 @@
+-- Migration: optional contact fields on people (main punimtag DB)
+-- Usage: ./scripts/run-psql-migration.sh migrations/add-people-contact-columns.sql
+
+ALTER TABLE people
+  ADD COLUMN IF NOT EXISTS email TEXT;
+
+ALTER TABLE people
+  ADD COLUMN IF NOT EXISTS phone TEXT;
+
+COMMENT ON COLUMN people.email IS 'Optional contact email for the identified person';
+COMMENT ON COLUMN people.phone IS 'Optional contact phone for the identified person';