Setup email verification

[Knerio]

close #559

[Copilot]

Pull Request Overview

This PR implements email verification functionality to address issue #559. The implementation includes email verification tokens, mailer functionality, and GraphQL mutations for verifying email addresses.

Key changes:

• Added email verification services for sending and verifying email tokens
• Implemented email verification workflow integrated with user registration and update processes
• Created GraphQL mutation and corresponding tests for email verification

Reviewed Changes

Copilot reviewed 27 out of 27 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
app/models/user.rb	Added token generation for email verification with 15-minute expiry
app/services/users/email_verification_service.rb	Service to verify email tokens and update user verification status
app/services/users/email_verification_send_service.rb	Service to send verification emails to users
app/mailers/user_mailer.rb	Mailer class for sending email verification messages
app/graphql/mutations/users/email_verification.rb	GraphQL mutation for email verification
db/migrate/20250919201730_add_email_verified_at_to_user.rb	Database migration adding email verification timestamp
spec/support/shared_examples/sends_email.rb	Fixed typo in shared example variable name
Multiple test files	Added comprehensive test coverage for email verification functionality

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[github-actions]

GitLab Pipeline Action

General information

Link to pipeline: https://gitlab.com/code0-tech/development/sagittarius/-/pipelines/2054085691

Status: Passed
Duration: 5 minutes

Job summaries

rspec: [ee]

Coverage report available at https://code0-tech.gitlab.io/-/development/sagittarius/-/jobs/11442884980/artifacts/tmp/coverage/index.html
Test summary available at https://gitlab.com/code0-tech/development/sagittarius/-/pipelines/2054085691/test_report
Finished in 21.86 seconds (files took 14.41 seconds to load)
1174 examples, 0 failures
Line Coverage: 91.1% (3796 / 4167)
[TEST PROF INFO] Time spent in factories: 00:12.360 (41.63% of total time)

rspec: [ce]

Coverage report available at https://code0-tech.gitlab.io/-/development/sagittarius/-/jobs/11442884976/artifacts/tmp/coverage/index.html
Test summary available at https://gitlab.com/code0-tech/development/sagittarius/-/pipelines/2054085691/test_report
Finished in 20.85 seconds (files took 11.47 seconds to load)
1127 examples, 0 failures
Line Coverage: 90.4% (3643 / 4030)
[TEST PROF INFO] Time spent in factories: 00:11.647 (42.73% of total time)

rubocop

644 files inspected, no offenses detected