feat(mail): share oleksandra.svitelska mailbox with info@ (read-only)

Add oleksandra.svitelska@produktor.io to PRODUCTION_OWNERS so info@
sees it under Shared/ (lookup read), same class as the other production
mailboxes. Applied live via user-patches.sh (idempotent); no container
recreation needed.

config/user-patches.sh

@@ -1,7 +1,8 @@
 #!/bin/bash
 # Dovecot shared mailboxes. info@produktor.io gets access to the mailboxes of
 # two owner classes (issue #79, issue #251 / epic #250):
-#   - production owners (ano@, andriy.oblivantsev@, postmaster@): read-only
+#   - production owners (ano@, andriy.oblivantsev@, oleksandra.svitelska@,
+#     postmaster@): read-only
 #     (`lookup read`) — one login in Roundcube covers the whole account list;
 #   - incubator owners: read + delete (`lookup read delete expunge
 #     write-deleted`) — the mailbox owner never logs in, mail is imported via
@@ -37,7 +38,7 @@ chmod 0770 "${SHARED_DB_DIR}"
 #    NOT required; `expunge` is also what Dovecot MOVE needs on the source side
 #    when Roundcube moves a deleted message to Trash.
 READER='info@produktor.io'
-PRODUCTION_OWNERS='ano@produktor.io andriy.oblivantsev@produktor.io postmaster@produktor.io'
+PRODUCTION_OWNERS='ano@produktor.io andriy.oblivantsev@produktor.io postmaster@produktor.io oleksandra.svitelska@produktor.io'
 INCUBATOR_OWNERS='andriy.oblivantsev@wheregroup.com eslider@gmail.com viscreation@gmail.com viscreation@gmx.de andriy.oblivantsev@gridfactor.de ao@rpf.de andriy.oblivantsev@gmail.com viscreation@viscreation.de'
 
 grant_share() { # $1=owner, remaining=right names