add proper domain

[printminion-co]

• use npm run mock of Mk/dev/add mock dev server ionos-mail-configuration-api-client#4
• use in .env

IONOS_MAILCONFIG_API_URL=http://mailconfig.api.localhost:4010
IONOS_MAILCONFIG_API_USER=foo
IONOS_MAILCONFIG_API_PASS=bar

• use admin@storage.localhost for local tests

[Copilot]

Pull Request Overview

This PR refactors the IONOS email account creation flow to separate username from domain. Instead of accepting a full email address, the system now accepts only the username portion and constructs the full email address by appending a configured mail domain extracted from the customer domain setting.

Key changes:

• Extract mail domain from customer domain using Public Suffix List
• Change API parameters from emailAddress to emailUser/userName
• Remove email validation and extraction logic from IonosMailService
• Update frontend to display domain suffix and collect only username

Reviewed Changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
lib/Service/IONOS/IonosConfigService.php	Added getMailDomain() method to extract registrable domain from customer domain using Pdp library
lib/Service/IONOS/IonosMailService.php	Refactored createEmailAccount() to accept username instead of email address; removed extractDomain() and extractUsername() helper methods
lib/Controller/IonosAccountsController.php	Updated parameter from emailAddress to emailUser; removed email format validation; updated logging to use the constructed email from response
lib/Controller/PageController.php	Added IonosConfigService dependency and included mail domain in initial state
src/components/ionos/NewEmailAddressTab.vue	Changed input field from email to username; dynamically display domain suffix from preferences; construct full email for validation
src/init.js	Added initialization of ionos-mailconfig-domain preference in store
tests/Unit/Service/IONOS/IonosConfigServiceTest.php	Added comprehensive tests for getMailDomain() covering various domain formats
tests/Unit/Service/IONOS/IonosMailServiceTest.php	Updated all tests to use username instead of email address; removed tests for extraction methods
tests/Unit/Controller/IonosAccountsControllerTest.php	Updated tests to use emailUser parameter; removed email format validation test
tests/Unit/Controller/PageControllerTest.php	Added IonosConfigService mock and verified mail domain is included in preferences

Comments suppressed due to low confidence (1)

src/components/ionos/NewEmailAddressTab.vue:1

• [nitpick] Comment updated to 'email user' but should be consistent with terminology used elsewhere. Consider 'Test with empty username' to match the parameter name.

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[Copilot]

Unnecessary blank lines added. Remove extra blank line to maintain consistent code formatting.

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