feat: release regional radar and mailbox integrations

.env.example

@@ -30,15 +30,12 @@ SMTP_USER=
 SMTP_PASSWORD=
 SMTP_USE_TLS=1
 
-# Dedicated IMAP-mailbox. Geen gewone hoofdmailbox gebruiken.
-IMAP_ENABLED=0
-IMAP_HOST=
-IMAP_PORT=993
-IMAP_USER=
-IMAP_PASSWORD=
-IMAP_MAILBOX=INBOX
-IMAP_USE_SSL=1
-IMAP_MARK_SEEN=0
+# Roteerbare Fernet-sleutels voor app-wachtwoorden; actieve sleutel eerst.
+# Genereer met: python -c "from cryptography.fernet import Fernet; print(Fernet.generate_key().decode())"
+MAILBOX_CREDENTIAL_KEYS=
+IMAP_CONNECT_TIMEOUT_SECONDS=15
+IMAP_MAX_MESSAGES_PER_POLL=200
+IMAP_MAX_MESSAGE_BYTES=1000000
 
 # Fetcher
 FETCHER_USER_AGENT=VacatureRadar/0.1 (+local-personal-use; contact=local-admin)