feat: enhance n8n workflows with dynamic credential management and email configuration

.env

@@ -36,11 +36,21 @@ ENABLE_EMAIL_SIGNUP=true
 ENABLE_EMAIL_AUTOCONFIRM=true
 ENABLE_ANONYMOUS_USERS=false
 
-# ---- SMTP (dummy; real values needed only to send password-reset mail) ----
-SMTP_HOST=localhost
-SMTP_PORT=2500
-SMTP_USER=fake
-SMTP_PASS=fake
+# ---- SMTP / IMAP (MC Cars mailbox) ----
+SMTP_HOST=heracles.mxrouting.net
+SMTP_PORT=587
+SMTP_USER=office@mc-cars.at
+SMTP_PASS=fhXTcjWMRpSLYYzXJsN8
+
+IMAP_HOST=heracles.mxrouting.net
+IMAP_PORT=993
+IMAP_USER=office@mc-cars.at
+IMAP_PASS=fhXTcjWMRpSLYYzXJsN8
+
+POP3_HOST=heracles.mxrouting.net
+POP3_PORT=995
+POP3_USER=office@mc-cars.at
+POP3_PASS=fhXTcjWMRpSLYYzXJsN8
 
 # ---- Admin BOOTSTRAP credentials (seeded on first DB init) ----
 # The user is flagged must_change_password=true. The REAL working password
@@ -56,3 +66,13 @@ FILE_SIZE_LIMIT=52428800
 N8N_ENCRYPTION_KEY=mc-cars-n8n-encryption-key-change-me
 N8N_USER_EMAIL=admin@mccars.local
 N8N_USER_PASSWORD=McCars-N8n-Admin1
+N8N_POSTGRES_CREDENTIAL_ID=AWozEaiOSymMj7JF
+N8N_POSTGRES_CREDENTIAL_NAME=Postgres account
+N8N_SMTP_CREDENTIAL_ID=nRMemi1sz2C0N4Vu
+N8N_SMTP_CREDENTIAL_NAME=SMTP account
+N8N_SMTP_HOST=heracles.mxrouting.net
+N8N_SMTP_USER=office@mc-cars.at
+N8N_SMTP_PASS=fhXTcjWMRpSLYYzXJsN8
+N8N_PAYPAL_KAUTION_LINK=https://www.google.at
+N8N_PAYPAL_MIETE_LINK=https://www.google.at
+N8N_PAYMENT_WORKFLOW_ID=rI1gUpcRXSikxWhh