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.

README.md

@@ -17,6 +17,7 @@ mailboxes:
 
 - `info@produktor.io` — human reader (Roundcube login for the whole list)
 - `andriy.oblivantsev@produktor.io`
+- `oleksandra.svitelska@produktor.io`
 - `ano@produktor.io`
 - `postmaster@produktor.io`
 - `postman@produktor.io`
@@ -115,8 +116,8 @@ Roundcube covers the whole account list. Delivery is unchanged (no aliases, no
 redirects); other accounts keep their own passwords. Two owner classes, two
 right sets for `info@`:
 
-- **production owners** (`ano@`, `andriy.oblivantsev@`, `postmaster@`):
-  read-only — `lookup read` (issue #79);
+- **production owners** (`ano@`, `andriy.oblivantsev@`, `oleksandra.svitelska@`,
+  `postmaster@`): read-only — `lookup read` (issue #79);
 - **incubator owners** (one account per historical address of the owner:
   `andriy.oblivantsev@wheregroup.com` for the гдеgroup period; later
   `eslider@gmail.com`, `...@viscreation.de`, ...): read **and delete** —