feat(email): add email field type

[vitormattos]

Summary

Adds Email as a new profile field type, extending the existing catalog with backend normalization, workflow support, frontend input support, updated API schema, and regression tests.

Changes

Backend (PHP)

• lib/Enum/FieldType.php: added EMAIL = 'email' and included it in values()
• lib/Service/FieldValueService.php: added normalizeEmailValue() using FILTER_VALIDATE_EMAIL; includes email in normalization match and text-like search behavior
• lib/Workflow/UserProfileFieldCheck.php: added email operators (is-set, not-is-set, is, not-is, contains, not-contains); for contains/not-contains, skips strict email normalization and performs substring evaluation
• lib/ResponseDefinitions.php: added 'email' to ProfileFieldsType
• lib/Service/FieldDefinitionValidator.php, ImportPayloadValidator.php, DataImportService.php: updated type unions to include email

Frontend (Vue 3 / TypeScript)

• src/types/index.ts: FieldType union now includes 'email'
• src/utils/workflowProfileFieldCheck.ts: email fields use text-style operator keys
• src/views/AdminSettings.vue: added Email option in field type selector
• src/views/PersonalSettings.vue: supports native email input type and inputmode mappings
• src/components/AdminUserFieldsDialog.vue: added email descriptions, placeholders, input type/mode mappings, helper text, validation, and backend error message mapping

OpenAPI

Regenerated:

• openapi.json
• openapi-full.json
• openapi-administration.json
• src/types/openapi/openapi.ts
• src/types/openapi/openapi-full.ts
• src/types/openapi/openapi-administration.ts

Tests

PHP unit

• FieldDefinitionValidatorTest: email definition acceptance
• FieldValueServiceTest: email normalization accept/trim/reject cases
• UserProfileFieldCheckTest: email contains operator execution/validation

Frontend (Vitest)

• workflowProfileFieldCheck.spec.ts: email operator coverage
• AdminSettings.spec.ts: Email option visibility
• AdminUserFieldsDialog.spec.ts: email input rendering and helper text
• PersonalSettings.spec.ts: email input rendering

Validation

• docker compose exec -u www-data nextcloud ... composer test:unit ✅ (175 tests, 560 assertions)
• npm run ts:check ✅
• npm run test ✅ (44 tests)
• docker compose exec -u www-data nextcloud ... composer cs:fix ✅
• docker compose exec -u www-data nextcloud ... composer psalm ✅ (0 errors)
• docker compose exec -u www-data nextcloud ... composer openapi ✅

Screenshot

Admin → Profile fields → Create field → Type dropdown showing Email option: